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Designed By Aroz

Shop > ATV (Quad) > Big Bore Kits


TRX440 99-04 Big Bore Kit
#AT-FAST99-MG

Honda TRX440EX Fast Kit - Namura 440cc Big Bore Piston, Rings, Circlips, Pin, 440cc Hi-Performance Gaskets, Advanced 440cc Sleeve, Hi-Performance Rev-Box, Stage 2 Performance cam.

Price: $340.00



TRX440 05-06 Fast Kit
#AT-FAST05-MG

Honda TRX440EX Fast Kit - Namura 440cc Big Bore Piston, Rings, Circlips, Pin, 440cc Hi-Performance Gaskets, Advanced 440cc Sleeve, Hi-Performance Rev-Box, Stage 2 Performance cam.

Fits 2005-2006

Price: $380.00



YFZ450 Athena 475 Big Bore Kit
#AY-1201-MG

Complete 475cc big bore kit from Athena for your YFZ450. Kit includes aluminum cylinder with galvanic coating designed with wider water jackets, a forged piston with molybdenum coating, a special gaskets kit and easy to follow instructions.

Bolt on installation.
No machining required.

Fits 2004-2006

Price: $645.00



Athena Big Bore Kit HondaTRX480R
#AH-0201-MG

Complete 480cc big bore kit from Athena for your TRX450R. Kit includes aluminum cylinder with galvanic coating designed with wider water jackets, a forged piston with molybdenum coating, a special gaskets kit and easy to follow instructions.

Bolt on installation.
No machining required.

Fits 2004-2006

Price: $645.00



Athena Big Bore Kit 435 (Z400, DVX400, KFX400)
#AK-7501-MG

Complete 435cc big bore kit from Athena for your LTZ, KFX or DVX 400. Kit includes aluminum cylinder with galvanic coating designed with wider water jackets, a forged piston with molybdenum coating, a special gaskets kit and easy to follow instructions. Bolt on installation. No machining required.
Retail $780.95
Fits 2003-2007

Price: $610.00