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Engine


Magnum TRX440EX Big Bore Kit
$429.95   $365.46
-15%
Magnum TRX440EX Big Bore Kit  TRX440EX Steel Bore Cylinder kit Namura 440cc Big Bore Piston Kit Namura 440cc Gasket Kit.... More

Rekluse Z-Start
$579.95
The Rekluse z-Start Clutch is a retrofit automatic clutch. It works using centrifugal force to automatically and smoothly engage the clutch just by using... More

Hot Rod Crank Bearings & Seal Kits
$59.95
Hot Rods is proud to introduce their line of precision , high quality , main bearings and seal kits, which are designed to support OEM or Hotrods crank line.

Magnum Honda TRX330EX Big Bore Kit
$329.95   $280.46
-15%
Big Bore kit includes all parts needed to turn your Honda 300EX into a 330cc power house! No need to ship out your cylinder and have it re-sleeved. This kit... More

Cylinder Works O.E.M. Replacement Cylinders
[Contact us for a price]
The new Cylinder Works O.E.M. replacement cylinder is a standard cylinder from the makers of the Pivotworks™, Hotcams™, and Hot Rods™.... More

EBC Dirt-Racer Clutch Kits
$155.30
Anti-swell, alloy impregnated heavy duty cork based facings for smooth clutch take up. This allows modulation, unlike paper clutches which tend to snatch.... More

Hinson Billet Clutch Basket
$239.95
Hinson Billet Clutch Baskets are machined from T-6 aluminum to aerospace tolerances and Alkalized for 5 times the wear resistance over stock. Allows more oil flow over the plates for better heat dissipation, improved performance, and longer clutch life.

Cylinder Works Big Bore Piston Kits
$265.95   $204.78
-23%
Replacement pistons for your Cylinder Works Big Bore Cylinder Kits.

Hinson Inner Clutch Hub
$299.95
The Hinson Racing Inner Clutch Hub is designed to help eliminate clutch chatter, spin more true, and create less heat in the clutch. All of these add up to a... More

Magnum Clutch Basket
$169.95
Magnum clutch baskets are precision machined from a solid block of aluminum. These baskets have wear resistance far superior to stock units. A special hard... More

Pro X Inner Clutch Hub
$56.95
PRO X Inner Clutch Hubs are precision machined from heat treated aircraft type aluminum alloy to O.E. precision standards. Sophisticated hard-anodising... More

Magnum MX-Pro Clutch Kits
$99.99
Magnum Clutch kits are race proven to meet the needs of today's off road racers.

Athena Standard Bore Kits
$763.99   $595.91
-22%
Athena Standard Bore Features: Wider water jackets nickel carbine coated cylinder Comes with: Piston, Rings, Circlips, Cylinder, and top... More

Wiseco Valves
$528.00
Wiseco Valve kit includes exhaust valves, intake valves , and center valves were applicable. The LTR450 and the YFZ450 come in Titanium. The 400ex, kfx400, ltz400 come in stainless steel.

Advanced Cylinder Sleeves
$68.95   $58.61
-15%
Advanced Sleeve was created with the Professional engine builder in mind. COuntless hours have been put into listening and implementing ideas and suggestions of many of the industry's leaders to help produce one of the most technologically advanced sleeve products available today.