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This kit of O.E. Suzuki O-rings replaces your leaky, weepy, and brittle O-rings that fit between your DR's oil cooler lines. You get 4 O-rings in this kit to replace both feed and return line O-rings.

If you're noticing oil leaking or creeping around your oil cooler, oil cooler lines, or engine, you may have one or more failed / failing oil cooler line O-rings. Replace them now before they completely fail and you run your motor dry of the precious oil it needs to operate properly.

New from the folks at Warp 9, a CNC billet machined Oil Filler Cap. Available in Blue or Black and it includes a new O-ring! To make removal as easy as possible, the center tab takes a 12mm wrench perfectly, or a 1/4" ratchet drive in the center! On each end of the center tab is a drilled hole should you find it necessary to safety wire your filler cap in place.

• CNC machined aluminum oil filter covers
• Made of A7009-T6 aluminum with a beautiful anodized finish
• Lighter than stock oil filter covers

Unless you have managed to bash yours on a rock, this is an item of pure bling, but hey, there is nothing wrong with that! This CNC Oil Filter Cover is made from A7009-T6 aluminum with the 'Zeta' logo machined into the front and anodized in blue to really stand out on your Yamaha. It's also lighter than stock.

For easy removal of recessed oil filters.

Conical point screws pierces and grabs the metal end cap of the filter.

reduces potential damage to the engine cases.

NOT for use on re-usable oil filters.

• Cleanable and reusable filter
• 35 micron stainless steel mesh
• Stainless check ball and stainless spring
• CNC aluminum caps front and rear

Providing unbeatable performance and exceptional value, Hiflofiltro is the best-selling brand of aftermarket filters for motorcycles, scooters, and ATVs worldwide. The filters are also supplied to original equipment manufacturers as well as private label brands.

You pay $3.50 per filter with our value 10-pack!

Providing unbeatable performance and exceptional value, Hiflofiltro is the best-selling brand of aftermarket filters for motorcycles, scooters, and ATVs worldwide. The filters are also supplied to original equipment manufacturers as well as private label brands.

Providing unbeatable performance and exceptional value, Hi-Flo is the best-selling brand of aftermarket filters for motorcycles, scooters, and ATVs worldwide. The filters are also supplied to original equipment manufacturers as well as private label brands.

You pay $3.70 per filter with our value 10-pack!

Made from laser-cut, medical-grade, 304 stainless steel micronic filter cloth, this filter provides 200% more filter area over many paper filters, catching debris down to 35 microns. The FLO filter pleat seam is welded and able to withstand up to 600 deg. F. Filter maintains consistent flow under all conditions including extreme heat, the presence of water and cold start-ups where paper filters can flow so poorly that they often cause the bypass valve to open and allow unfiltered oil to enter your engine.

This cleanable oil filter should be the last one you ever purchase.

Superior Filtration:

This should be the last oil filter you will ever buy. Made from laser cut, medical grade, 304 stainless steel micronic filter cloth, this filter provides 200% more filter area in many cases. Most good paper filters will pass particles in the 90 to 95 micron range, and some tested, as much as 300 microns. Sand is about 125 microns and a white blood cell approximately 25 microns. Flo's stainless filter catches items down to 35 microns "absolute", which is about 3 times better than most good paper or brass filters. The pleat seam is welded, able to withstand up to 600 degrees in our filter, not glued, like paper filters.

Superior Filtration:

This should be the last oil filter you will ever buy. Made from laser cut, medical grade, 304 stainless steel micronic filter cloth, this filter provides 200% more filter area in many cases. Most good paper filters will pass particles in the 90 to 95 micron range, and some tested, as much as 300 microns. Sand is about 125 microns and a white blood cell approximately 25 microns. Scott's stainless filter catches items down to 35 microns "absolute", which is about 3 times better than most good paper or brass filters. The pleat seam is welded, able to withstand up to 600 degrees in our filter, not glued, like paper filters.

Superior Filtration:

This should be the last oil filter you will ever buy. Made from laser cut, medical grade, 304 stainless steel micronic filter cloth, this filter provides 200% more filter area than other filters in many cases. Most good paper filters will pass particles in the 90 to 95 micron range, and some tested, as much as 300 microns. Sand is about 125 microns and a white blood cell approximately 25 microns. Scott's stainless filter catches items down to 35 microns "absolute". The pleat seam is welded, able to withstand up to 600 degrees, not glued, like paper filters.

This kit provides much of the performance gain of our 130 kit but keeps you legal for racing classes that do not allow motors over 125cc.

• Stock bore size Wiseco 54mm high compression 11:1 piston, rings, wrist pin, and clips
• HotCams stage 1 performance camshaft
• Includes top end gasket set
• Piston fits into the stock bore; requires no modification to your cylinder!

Stock bore replacement pistons from Wiseco. You have your choice of the standard compression ratio of 12.2:1, or a high-compression ratio of 13.5:1.

This high-compression kit will run perfectly with standard pump Premium.

Kits include piston, rings, wrist pin and circlips.

The Complete Top End Performance Kit includes:

10.5:1 compression JE piston with rings, wrist pin and circlips (the actual measured stock compression is only 8.7:1).
Stage 2 Web Cams high performance camshaft for more power (reground from brand new OEM Suzuki camshafts).
Top end gasket set with metal base gasket.

We strongly recommend checking valve to piston clearance when installing a non-standard camshaft.

Higher pressure in the cooling system, raises the coolant boiling point and increases protection from coolant loss due to overheating.

23 PSI - 1.6 Bar.

Providing unbeatable performance and exceptional value, Hi-Flo Filter is the best-selling brand of aftermarket filters for motorcycles, scooters, and ATVs worldwide. The filters are also supplied to original equipment manufacturers as well as private label brands.

Providing unbeatable performance and exceptional value, Hiflofiltro is the best-selling brand of aftermarket filters for motorcycles, scooters, and ATVs worldwide. The filters are also supplied to original equipment manufacturers as well as private label brands.

You pay $3.40 per filter with our value 10-pack!

Available in orange

Manufactured by Samco Sport UK - the world leader in silicone hose, with over 20 years experience.

• Hand wrapped and 100% visually inspected in the UK
• European grade high-temperature silicone guaranteed to 356°F
• Improved insulation promotes radiator efficiency and improves engine cooling
• Three layers of reinforcement fabric offer high burst pressures and provide better debris/crash resistance
• Used by leading MX/Enduro and Off-road teams

High-performance clamp kits feature marine-grade 18/8 stainless steel clamps with rounded edges, smooth inners and polished surfaces; contain all clamps necessary to complete installation of radiator hose kit.

• High-temperature silicone guaranteed to 356° F
• Smooth flow and improved insulation promotes radiator efficiency and improves engine cooling
• Single molded, Y-piece hoses eliminate the need to reuse OEM 3-way fitting which reduces weight and eliminates leak points
• Three layers of reinforcement fabric offer high burst pressures and provided better debris/crash resistance
• UV stable colors don't fade with heat or sun and are color matched to OEM brands

DRC is one of the leading manufacturers of silicone hose kits for motorcycles.

• Durable silicone radiator hose for dirt bikes
• Available for MX, ED racers and street dirt bikes
• Smooth inner diameter allows for increased coolant flow
• Printed white DRC logo. Available in red or blue colors

Providing unbeatable performance and exceptional value, Hiflofiltro is the best-selling brand of aftermarket filters for motorcycles, scooters, and ATVs worldwide. The filters are also supplied to original equipment manufacturers as well as private label brands.

Providing unbeatable performance and exceptional value, Hiflofiltro is the best-selling brand of aftermarket filters for motorcycles, scooters, and ATVs worldwide. The filters are also supplied to original equipment manufacturers as well as private label brands.

• The original Hiflofiltro factory was founded in 1955 and has been manufacturing filters for the OEM motor industry since 1963.
• Constructed using the best materials available.
• With the experience of more than five decades, constant research and development and featuring a completely modern production facility, Hiflofiltro offers some of the best quality filters in the world.
• TUV approved and production monitored to ensure OEM or better quality.
• Sold as a package of 5 oil filters.

Fresh O-rings to ensure your XRL stays oil-tight and leak free. The Oil Change O-Ring kit includes a filter cover O-ring and a filler plug O-ring.

Always a good idea to put in a new set of Oil Change O-Rings at the first sign of any leakage. This package gives you the three most important: oil filter cap and the one behind the filter as well as the one on the filler cap. All are new OEM Suzuki O-Rings.

Moose Race Fit Radiator Hose Kit

• Manufactured by Samco® Sport UK – the world leader in silicone hose, with over 20 years experience
• Hand wrapped and 100% visually inspected in the UK
• European grade hi-temperature silicone guaranteed to 356°F
• Smooth flow and improved insulation promotes radiator efficiency and improves engine cooling
• Single-molded, Y-piece hoses eliminate the need to reuse OEM 3-way fitting, which reduces weight and eliminates leak points
• Single-molded, T-piece hoses eliminate vulnerable threaded leak points and reduce weight
• Three layers of reinforcement fabric offer high burst pressures and provide better debris/crash resistance
• Zero block tooling technology results in clear and open hose junctions, free from dangerous and restrictive flashing
• Used by leading MX/Enduro and Off-road racing teams
• UV-stable colors don’t fade with heat or sun and are color matched to OEM brands
• Clamps made from 18/8 marine-grade 100% stainless steel have rounded edges that prevent the clip from cutting into the hose and a non-perforated band prevents clip from biting into the hose
• Kit contains hoses and necessary clamps

Fresh o-rings to ensure your DR650 stays oil-tight and leak free. Includes one of each: oil filter o-ring, filter cover o-ring and filler cap o-ring

Here are the O-Rings you need when you perform an oil change. The largest one and the smallest one go inside the oil filter housing cover. The second largest one goes on your oil drain plug. The second smallest one goes on your oil fill plug. Replacing these O-Rings regularly will help keep your engine from seeping oil.

Put fresh O-rings on your KLR when you do your next oil change. Here you have new ones for the Oil Filler and the Oil Filter Housing Cover.

Africa Twin with DTC

• In addition to the main oil filter, bikes with DTC have an additional oil filter in the clutch circuit
• Constructed using the best materials available
• With the experience of more than five decades, constant research and development and featuring a completely modern production facility, Hiflofiltro offers some of the best quality filters in the world
• TUV approved and production monitored to ensure OEM or better quality
• Sold as a package of 5 filters

• Constructed using the best materials available
• TUV approved and production monitored to ensure OEM or better quality
• Sold as a package of 5 oil filters

Fresh o-rings ensure a tight seal and no oil leaks.

Oil Change Kit includes O-rings for: Filler Cap, Filter Cover, Strainer Cap and Filter Seal.

Valve Inspection Kit includes O-rings for: Valve Inspection Caps, Timing Inspection Cap and Timing Plug Cap.

Here are the O-Rings you need when you perform an oil change. These go inside the oil filter housing cover.

Replacing these O-Rings regularly will help keep your engine from seeping oil.

Adjusting your valves or setting your cam chain tension? Here are the O-Rings that fit in the TDC sight plug and the crankshaft nut access plug.

Fresh O-rings to ensure your XRL stays oil-tight and leak free. The Valve Cover Kit includes 4 new valve cover O-rings.

A pair of factory OEM o-rings for the valve covers. Your valve cover o-rings live in one of the hottest parts of the engine and have a pretty short life. Replace them on your next valve adjustment to prevent oil leaks.

Time to adjust your valves? Here are the O-Rings that fit in your Valve Covers on your Yamaha. Keep the oil inside your motor and grime out! This kit includes both O-Rings. Be sure to grab the feeler gauges and a special wrench to aid in adjusting your valves.

OEM valve cover o-rings

If you're plannig to or already have a stroker crank setup in your Yamaha WR250R/X, you'll need this stroker piston.

Features:

• All piston skirts are coated with a hi-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
• Cast Replica piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
• Forged Replica pistons are forged from 2618 aluminum for superior strength and durability
• Forged High Compression pistons improve power and torque across entire rpm range
• Forged Big Bore pistons increase engine’s displacement, torque, and peak horsepower
• Forged Replica pistons are forged OE replacements
• All pistons are heat treated with a T-5 hardening and tempering cycle
• Replica pistons and all rings are OEM replacements
• Kits include piston, rings, wrist pin and circlips
• Two stroke replacement rings are sold individually (Example if your piston has two rings you will want to order two rings)
• Four-stroke piston rings sold as a set

Raises compression from stock 9.5:1 to 10.5:1 for more power, torque and snappier engine response. The high quality forged piston from JE is almost a full ounce lighter than the stock cast piston. This makes for less vibration and a smoother running motor. Includes rings, pin, clips, and top end gasket set with valve stem seals and metal base gasket. Fits the standard size stock bore.

Raises compression from stock 9.5:1 to 10.5:1 for more power and snappier response. The high quality forged piston from JE is almost a full ounce lighter than the stock cast piston. This makes for less vibration and a smoother running motor. Fits the standard size stock bore.

Raises compression from stock 9.5:1 to 10.5:1 for more power and snappier response. Highest quality Wiseco pistons are forged in the USA. Fits the standard size stock bore.

  As with any engine or exhaust modification, you will need to re-tune your fuel delivery system for optimum performance.

Our very own version of the popular thermostat bypass for the KLR. Gives faster warm up and more constant engine temperatures. Eliminates the wildly fluctuating engine temperature gauge. A more controlled and constant temperature is easier on your piston and cylinder and may prevent or reduce oil consumption. We use a 180 degree thermostat instead of the stock (too cold!) 160 degree unit. Warmer coolant temperature promotes better fuel vaporization and can increase fuel economy.

Our bypass system mounts the new thermostat in a small billet extension housing right where the stock thermostat is now. There is no bulky external housing to hang off the motor. The bypass hose tees in to the lower radiator hose using a length of quality high temperature silicone hose. It all makes for a clean simple installation.

Repair manual for XR250R '86-'04 / XR250L '91-'96 / XR400R '96-'04.

Clymer repair manuals provides step-by-step procedures based upon the complete disassembly of the motorcycle. This hands-on experience combined with extensive research results in a manual that is both user-friendly and detailed. Hundreds of original photos and illustrations guide the reader through every job.

Clymer manuals are the most user-friendly repair manuals. They are written for the do-it-yourself-er as well as the experienced mechanic by industry experts. Step-by-step instructions based on the complete disassembly of the machine.

Hardened chrome vanadium steel with built in rubber insert to hold spark plug steady.

Thin wall bi-hex sockets designed to access narrow spark plug holes.

Fits 3/8" square drive and hex drive, 14mm, 16mm, 18mm, 21mm.

The Clymer shop service and repair manual. It has all the necessary info to do any maintenance or repairs to your XR650L.

Clymer motorcycle repair manuals are written specifically for the do-it-yourselfer. Whether it's routine maintenance or more extensive repairs involving engine and transmission disassembly, Clymer repair manuals provide all the information you need about your motorcycle. With step-by-step procedures, detailed photography and extensive use of exploded views, each manual is based on the complete disassembly of the machine. Unlike OEM manuals, which are purposely designed for the professional technician with an impressive array of specialized tools, equipment and knowledge, Clymer manuals are designed for the first-time user.

The DR650 manual features 278 pages of color wiring diagrams, illustrations and photographs. There are 15 chapters, ranging from general information and troubleshooting to brakes, suspension and full color wiring diagrams.

'75 - '91 XR75, XR80, XR100, XL75, XL80, XL100S

Clymer manuals are the most user-friendly repair manuals. They are written for the do-it-yourself-er as well as the experienced mechanic by industry experts. Step-by-step instructions based on the complete disassembly of the machine. This manual in written to cover 90-94 models but nearly all of the information will apply to newer models also.

Genuine factory shop service and repair manual. This is the reference manual Yamaha dealers use in their service departments. It has all the necessary info to do any maintenance or repairs to your XT250.

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the motorcycle. Haynes books have clear instructions and plenty of photographs that show each step.

• Step-by-step procedures
• Easy-to-follow photos
• Complete troubleshooting section
• Valuable short cuts
• Color spark plug diagnosis

Complete coverage for your Yamaha Trail Bikes covering PW, RT, TT-R and XT225/350 models for 1981 thru 2000.

Direct replacement for old or broken stock spark plug caps.

Spark plug caps contain a resistor that can burn out with age. Fresh caps ensure your motor gets a strong spark.

• Sold in pairs.
• Adaptable thread size
• 5k Ohm
• Allowable wire diameter 7 mm-8 mm
• 120° elbow
• Spark Plug Resistor Cover - 10/12mm

This high quality socket from Motion Pro, is specifically designed to reach into the very small, deep space where the spark plug of the XR hides.

Normal sockets simply won't work in this case.

Genuine Suzuki Factory Service Manual for the DR200.

The genuine factory shop service and repair manual. This is the reference manual Yamaha dealers use in their service departments. It has all the necessary info to do any maintenance or repairs to your WR250R or X.

This Official 2001-up Yamaha TW200 Trailway Factory Service Manual provides repair, maintenance and service information for 2001-up Yamaha TW200 Trailway motorcycles. Most of the information is useful for the 1987-2000 models as well.

• High-performance silicone radiator hose kits
• Each kit features improved flow for better cooling – up to 9°F cooler
• Color-matched to manufacturer's production colors
• Each kit is handcrafted in the UK using the best silicone and fabric reinforcement materials and are 100% visually inspected before leaving the factory
• High-performance clamp kits (sold separately) feature marine-grade 18/8 stainless steel clamps with rounded edges, smooth inners and polished surfaces; contain all clamps necessary to complete installation of radiator hose kit

Genuine Honda replacement thermostat

Genuine Honda Factory Service Manual specifically for your CRF250L

The genuine factory shop service and repair manual. This is the reference manual Honda dealers use in their service departments. It has all the necessary info to do maintenance or repairs to your CRF450L.

The genuine factory shop service and repair manual. This is the reference manual Honda dealers use in their service departments. It has all the necessary info to do maintenance or repairs to your Africa Twin CRF1000L.

The starter bushing in the DR650 leads a tough life. Exhaust heat and minimal lube from the factory take their toll. Warp 9 has a high quality solution - a billet starter cover with a sealed ball bearing.

• CNC machined starter endcap
• Black anodized for good looks
• High Speed Abec 3 double sealed roller bearing installed
• Reduced amperage needed to start bike
• Brushes will have extended life

New starters that are manufactured to meet or exceed OEM specifications. Pull out your old starter, put in this new one and go riding. These units are built to provide a longer life than the OEM unit with these features:

• The armature is insulated for rust and corrosion protection
• Rubber seals on the top and bottom of the unit ensure a dry operation
• 90/10 copper bushings
• Extended shaft replaces long or short shaft OEM starters
• Bolt on direct OEM replacement

New starters that are manufactured to meet or exceed OEM specifications. Pull out your old starter, put in this new one and go riding. These units are built to provide a longer life than the OEM unit with these features:

• The armature is insulated for rust and corrosion protection
• Rubber seals on the top and bottom of the unit ensure a dry operation
• 90/10 copper bushings
• Extended shaft replaces long or short shaft OEM starters

A 3-pack of easy to apply strips measure the temperature of engine, suspension, and radiator components. Temperature range 149° to 248°

Thread Chasers are designed to clean and re-cut damaged aluminum threads.

This kit contains the two sizes most common on metric motorcycles, M6x1.0 and M8x1.25.

Thread Chasers also remove dirt and metal shavings that become captured in thread grooves.

Uses 8mm or 10mm hex sockets, a Must for all tool kits.

Kit includes feeler gauges and wrench.

A 'wrench style' tool to turn the 'square top' tappet screws. The wrench does a better job of holding the adjuster screw still while tightening the locknut. Slim and flat, this tool is easy to carry in a tool pack.

• Allows precise valve lash adjustment without disturbing the setting when the lock nut is fastened
• Knurled knob on adjuster drivers ensure a precise and secure grip
• Integrated repositionable wrench handle holds the lock nut while the drivers are used to loosen or tighten the valve adjustment screw

Set includes:

• (1) 10mm steel socket wrench
• (1) 3mm square tappet adjuster

7.48mm diameter - Includes three valve shims of each size from 1.20 to 3.50mm in .05mm increments.

141 shims in total. 0.57 cents per shim! Does your local dealer have the shims you need?

10mm diameter - Includes three valve shims of each size from 1.85 to 3.20 in .05 mm increments. 84 shims in total, 83 cents per shim!

Genuine Honda replacement exhaust gaskets.

The headpipe gasket seals the joint between the head pipe and Exhaust port. These gaskets are designed to crush a little bit to tightly seal where the pipe fits to the head, thereby making them a single use part. Get a fresh one now avoid having an exhaust leak when you install your new exhaust.

The muffler joint gasket seals the joint between the head pipe and muffler. These gaskets are easily damaged when removing the original muffler. FMF mufflers (Q4 or PowerCore 4) do not require a joint gasket but the all other aftermarket mufflers as well as the stock muffler do require a joint gasket. Get a fresh one now to ease installation of your new performance muffler.

This gasket seals the joint between the head pipe and Exhaust port. These gaskets are designed to crush a little bit to tightly seal where the pipe fits to the head. Get a fresh one now avoid having an exhaust leak when you install your new exhaust.

This gasket seals the joint between the head pipe and Exhaust port. These gaskets are designed to crush a little bit to tightly seal where the pipe fits to the head. Get a fresh one now avoid having an exhaust leak when you install your new exhaust.

K&L® shims exceed the maximum of the Apparent Rockwell Hardness "C" scale. Shims average 47.0 compared to the 46.0 maximum.

This kit fits KLR650 87-18 as well as other brands and models , please verify correct size for your model before purchase.

For adjusting valve clearance on twin cam models. Holds valve spring collar down so adjusting pads can be removed. From Motion Pro, made from hardened alloy steel.

These valve springs are required when using the BBR High Performance camshaft for the CRF150/230F.

• Built from the highest quality chrome-silicon wire
• Fully shot-peened and preset for long life

A set of four high quality valve stem seals.

4 custom made valves and 4 'Nickel Aluminum Bronze' valve seats. Valve sizes are 36mm intake (up from 32) & 32mm exhaust (up from 28). Requires professional installation.

  We strongly recommend checking valve to piston clearance when installing oversized valves.

These gaskets seal the joint between the head pipe and muffler. They are easily damaged when removing the original muffler. Get a fresh pair now to ease installation of your new performance muffler. Sold as a set of 2.

This gasket seals the joint between the head pipe and muffler. These gaskets are easily damaged when removing the original muffler. Get a fresh one now to ease installation of your new performance muffler.

This gasket seals the joint between the head pipe and muffler. These gaskets are easily damaged when removing the original muffler. Get a fresh one now to ease installation of your new performance muffler.

This gasket seals the joint between the head pipe and muffler. These gaskets are easily damaged when removing the original muffler. FMF mufflers do not require a joint gasket but the all other aftermarket mufflers as well as the stock muffler require a joint gasket. Get a fresh one now to ease installation of your new performance muffler.

The key to getting your built DRZ/KLX motor to make big power.

• Intake is 32mm (stock 30mm)
• Exhaust is 28mm (stock 26mm)
• Available with or without Heavy-duty valve springs

A highly refined blend of aluminum, copper and graphite lubricants. Use during assembly to prevent galling, corrosion and seizing due to weathering or chemicals. Anti-Seize assures easier disassembly. Temperature range: -60°F to 1600°F (-50°C to 870°C). Salt, corrosion and moisture resistant – ideal for marine use. Meets Mil Spec #907E.

• Allows precise valve lash adjustment without disturbing the setting when the lock nut is fastened
• Knurled knob on adjuster drivers ensure a precise and secure grip
• Integrated repositionable wrench handle holds the lock nut while the drivers are used to loosen or tighten the valve adjustment screw
• Includes 10mm socket with straight slot adjuster
• Fit motorcycles and ATVs with straight slot screw-type adjusters and 10mm lock nuts

Two feeler gauges on a single tool. Angled to make checking the clearances easier.

Stock valve clearances are .004" intake and .005" exhaust (.10mm int. and .13mm exh.)

Getting ready to adjust your valves? Here is a set of feeler gauges to make the job a little easier. One tool has .002" & .003" gauges the other has .004" & .005" gauges. Yamaha lists the specs as follows: .002"-.004" Intake and .004"-.006" Exhaust, clearance measured when engine is cold.

A set of feeler gauges so you can adjust the valves on your Yamaha. Yamaha says that when the bike is cold, the Intake should be between .002" and .004" and the Exhaust should be between .006" and .007".

This set includes one gauge with a .004" on one end and a .005" on the other for your intake side and another with a .006" and .008" for the exhaust side.

• 26 straight blades
• SAE and metric markings
• Check for clearance on valves, ignition points etc.
• Includes 26 blades varying in thickness from .0015"/.038 mm to .025"/.635 mm

Cylinder head upgrade. Features CNC machined port shapes, larger high performance valve seats and custom made valves. Valve sizes are increased from the tiny stock 33mm intake & 28mm exhaust to 36mm intake & 32mm exhaust. This is not a radical modification. These bigger valves bring the valve sizes up to what would normally be found on other brands of 650 singles.

Big Valve Heads are sold only on an exchange basis. We need your stock head for the next batch of modified heads.

  We strongly recommend checking valve to piston clearance when installing oversized valves.

The headpipe gasket seals the joint between the head pipe and Exhaust port. These gaskets are designed to crush a little bit to tightly seal where the pipe fits to the head, thereby making them a single use part. Get a fresh one now avoid having an exhaust leak when you install your new exhaust.

The muffler joint gasket seals the joint between the head pipe and muffler. These gaskets are easily damaged when removing the original muffler. Get a fresh one now to ease installation of your new performance muffler.

This gasket seals the joint between the head pipe and Exhaust port. These gaskets are designed to crush a little bit to tightly seal where the pipe fits to the head. Get a fresh one now avoid having an exhaust leak when you install your new exhaust.

Reduce exhaust leaks with this new OEM exhaust gasket. This gasket goes between the header pipe and the cylinder head.

We recommend Anti-Seize on exhaust fasteners.