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Cylinders and Heads




411-KLX-1401
BBR
143cc Big Bore Kit w/ Camshaft, Piston, Cylinder, & Gaskets - For 03-09 DRZ/KLX110
For 03-09 DRZ/KLX110 Bore Size Metric: 60.00 mm Displacement: 143 cc Piston Material: Aluminum Bolt on and go; BBR offers the largest...

Retail Price: $359.95
You save: $49.96  (14%)
Our Price: $309.99


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MC623000
KOSO
170cc Big Bore V4 Complete Head Kit - For Honda Grom & Monkey
For Honda Grom & Monkey Camshaft Torque: 1.71 Hp: 26.26 *measured without air filter & no noise reduction plug Compression ratio: 12.3:1 Cylinder...

Retail Price: $749.95
You save: $74.99  (10%)
Our Price: $674.96


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P400485100012
ATHENA
290CC Big Bore Cylinder Kit - 83MM 12.5:1 CR - For 01-07 Yamaha YZ250F 01-12 WR250F
For 01-07 Yamaha YZ250F 01-12 WR250F Bore Size: 83.00 mm California Prop 65 Warning: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/...

Retail Price: $852.95
You save: $85.29  (10%)
Our Price: $767.66


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P400510100002
ATHENA
435CC Big Bore Cylinder Kit - 94MM 12.3:1 CR - For DVX KFX DRZ LTZ 400
For DVX KFX DRZ LTZ 400 Bore Size: 94.00 mm California Prop 65 Warning: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/ Cylinder...

Retail Price: $833.95
You save: $83.39  (10%)
Our Price: $750.56


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11006-K02
CYLINDER WORKS
478cc Big Bore Cylinder Kit - Honda CRF450R
Honda CRF450R Super convenient, just purchase and install. Nickel silicon carbide-plated for longe life. Honed to exact size for easy piston...

Retail Price: $648.98
You save: $64.90  (10%)
Our Price: $584.08


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P400485100030
ATHENA
Big Bore Cylinder Kit - 58mm 144CC - For 05-19 Yamaha YZ125
For 05-19 Yamaha YZ125 Bore Size: 58,00 mm Cylinder Bore Coating: Nickel-Carbide Displacement: 144 cc Material: Aluminum UPC: 8055681301023...

Retail Price: $912.95
You save: $92.19  (10%)
Our Price: $820.76


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P400485100015
ATHENA
Big Bore Cylinder Kit - 95MM 11.9:1 CR - For 04-09 Yamaha YFZ450
For 04-09 Yamaha YFZ450 UPC: 8055681300934 Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating....

Retail Price: $575.95
You save: $57.59  (10%)
Our Price: $518.36


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P400510100008
ATHENA
Big Bore Cylinder Kit 100MM 13.3:1 CR - For 06-11 Suzuki LTR450 Quadracer
For 06-11 Suzuki LTR450 Quadracer Bore Size: 100.00 mm California Prop 65 Warning: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/ ...

Retail Price: $826.95
You save: $82.69  (10%)
Our Price: $744.26


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P400210100001
ATHENA
Cylinder Kit 100MM - For 02-08 Honda CRF450R
For 02-08 Honda CRF450R

Retail Price: $871.95
You save: $87.19  (10%)
Our Price: $784.76


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