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Engine

Big Bore

285cc big bore kit includes:

Wiseco piston 78.00/+5.00 10.5:1 (with rings, pin & clips): 

  • All Wiseco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life.
  • Diamond turned finish from one of the many CNC computer controlled turning centers guarantees you a perfect finish with no size variation. Wiseco pistons can be installed in any of today’s cylinder bore compositions
  • Wiseco’s state-of-the-art computerized manufacturing facility is dedicated to supplying both the high-perfomance racer and recreational enthusiast with the finest forged piston available in today’s market place.

HotCams stage 1 camshaft:

  • High-performance racing camshafts
  • Stage 1 performance camshafts are drop-in cams that are designed to be used with stock valve springs
  • In most applications, Stage 1 cams deliver more torque.

Complete top end gasket set:

  • High-tech materials provide unmatched reliability and performance
  • Rebuild the engine with total confidence as each set is designed for durability and accurate fit
  • Oil seals are genuine OEM replacement seals
  • Performance sets designed for a piston replacement
  • Includes every gasket, O-ring and seal required to rebuild a top end; valve seals, head, base, exhaust, tensioner, and other misc. gaskets and O-rings
  • Does not include formed rubber valve cover gasket
  • High-compression kits use .012" thick base gaskets to raise compression
  • Cost-effective way to raise compression without expensive high-compression pistons or cylinder head work
  • All gaskets made in the U.S.A. 

This is a great combination and a big 'bang for the buck' performance increase. 

No re-sleeving required. You will have to have your cylinder bored to fit the larger piston.

Ships in 3-5 business days
$439.95

Cam

Stage 1: Excellent mid-range and top-end power increase. Uses stock valve springs and rockers.


Fitment Specs: Exhaust Lift: 8.7; Exhaust Duration at 1.00mm: 236°; Intake Lift: 9; Intake Duration at 1.00mm: 236°

Ships in 3-5 business days
$309.95

Clutch

XR250R '86 - '95
  • Complete set of friction plates, steel plates, and springs
  • Heavy-duty springs help prevent clutch slip
  • Restores proper stack height, fixes clutch slip caused by wear and tear
Choose Year and Model
Please contact us for availability information
$84.95

Drain Plug

XR250R '96 - '04

A 10-pack of drain plug sealing crush washers. Replace your sealing washer at every oil change to prevent a leak.

Ships same business day
$6.95
XR250R '96 - '04

Extra protection for your motor! Strong magnet at the end of the plug picks up metallic flakes in your oil, protecting your engine!

Ships same business day
$16.95

Spark Plug, Engine & Maintenance

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.

Add Anti-Seize
Backordered: Waiting for stock from suppliers to fulfill orders placed on or after February 2025
$22.95

Oil Filter

Providing unbeatable performance and exceptional value, Hi-Flo is the best-selling brand of aftermarket filters for motorcycles, scooters, and ATVs worldwide.

Grab our 5-pack and save both time and money!

 

Ships same business day
$16.95

Repair Manuals