Parts-Engine-Big Bore Kits

Explore big bore kits for motorcycle and powersports engine builds, with components designed to support displacement upgrades, rebuild goals, torque gains, and performance tuning.
-80%

Cylinder Works Big Bore Cylinder Kit

Regular Price $178.64
Sale Price $178.64 Regular Price $893.18
-80%

S&S Cycle 132

Regular Price $932.07
Sale Price $932.07 Regular Price $4,660.37
-80%

Cylinder Works HC Big Bore Cylinder Kit Yamaha Raptor 700R / SE R 2006-2014

Regular Price $259.92
Sale Price $259.92 Regular Price $1,299.58
-80%

V-Twin Mfg. 1200cc Conversion Kit For Harley Sportster 883-1986-2003

Regular Price $167.83
Sale Price $167.83 Regular Price $839.16
-80%

S&S Cycle 1250 Big Bore Kit For Harley Sportster 1986-2022

Regular Price $271.57
Sale Price $271.57 Regular Price $1,357.84
-80%

S&S Cycle 124

Regular Price $1,941.84
Sale Price $1,941.84 Regular Price $9,709.18
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