CRF50
 & XR50

BBR 88cc Flat Top Piston Big Bore Kit

• Aluminum BBR cylinder
• Special 52mm piston specially designed to work with your stock cylinder head's combustion chamber
• BBR special grind camshaft take full advantage of the large piston for great performance
• Special BBR tapered aluminum intake manifold adapts the large carb to the stock intake port size
• 18mm Keihin PC carb includes extra main and pilot jets for easy tuning
• Also includes CR style throttle, cable, air filter and top end gasket kit

Hotcams Performance Camshaft

• Stage 1:  More bottom-end and mid-range torque
• Stage 2:  More mid-range and top-end horsepower
• Stage 3:  For big bore and stroker motors

K&N Air Filter

• Increased air flow over the stock air filter
• Designed to increase horsepower and throttle response
• Designed to fit inside the factory air box
• Larger surface area over foam filters which offers longer service intervals in dusty conditions
• Four layers of premium cotton gauze provides outstanding filtration
• Washable & re-usable, never wears out
• One filter will last the lifetime of your bike

Rear Sprocket

Black hard anodized alloy sprocket. Machined sprockets made from 7075 T651 aluminum reduces distortion and provides optimal thickness, to extend sprocket and chain life.

BBR Chain Guide

Fully wraps the chain to guide it onto the rear sprocket. Stainless steel hardware, anodized aluminum plate, and plastic buffer for low friction. Saves expensive engine cases.

BBR Shock Spring

Sized perfectly for adult back-yard racing or fast/aggressive mini riders. This is the most important upgrade you can make for an adult sized rider. The stock suspension is too soft for most adults and aggressive kids. Fits stock shock.

• 30% stiffer than stock
• Preset and stress relieved for long life
• Custom wound from aircraft quality spring steel
• Powder coated finish

BBR Quiet Core

Replace your BBR standard exhaust screen with this to reduce the sound level of your bike.

• Fits all BBR exhaust systems with removable spark arrester screen
• Easy 2 minute installation by removing the 3 end-cap bolts
• Reduces sound output with minimal increase in back pressure
• Makes your neighbor happy without ruining your bike's power delivery

BBR Heavy Duty Footpeg Bracket

Moves the footpegs 3/4" lower than stock and 1/2" further back.

BBR Handlebar Kit

• Gold or Black anodized
• billet aluminum top clamp
• Chrome-moly 8" rise handlebar
• Front brake lever with long cable
• Standard turn throttle with long cable and custom carb top (stock carb)
• CR type kill button with long length wires
• BBR crossbar pad and BBR grips
• Grip glue, instructions, and 6mm hex key wrench included

BBR Super Stock Swingarm

• BBR's Super Stock Swingarm is burly enough to handle today's pit bike racer
• Constructed of heat treated 6061 T6 aluminum with billet drop-outs and shock mount
• 2 1/4 longer than stock
• Includes stainless steel bushings and needle bearings
• Accepts 12" rear wheel
• Due to the extended length of this swingarm a longer chain is needed for installation

BBR Tall Seat

Complete replacement tall seat assembly for your CRF/XR50. Includes plastic seat base, perfectly shaped tall seat foam, and black non-slip seat cover.

• High density tall seat foam
• Non-Slip BBR seat cover

BBR Heavy-Duty Spoke Kit

BBR Super-strong stainless steel spokes are a must have for heavy riders. For use with BBR's aluminum wheels.

• Large diameter stainless steel spokes and nipples
• Helps eliminate broken spokes and hubs
• Each kit contains enough spokes for 1 wheel
• BBR spoke wrench included

BBR Folding Shift Lever

1" longer than stock

Clymer Repair Manual