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Parts-Engine-Big Bore Kits

Upgrade engine displacement with motorcycle big bore kits for performance builds, restorations and custom projects. Explore compatible cylinders, pistons and components designed to support increased capacity, torque and responsive power delivery.
-80%

S&S Cycle High Compression 132

Regular Price $339.19
Sale Price $339.19 Regular Price $1,695.95
-80%

S&S Cycle 95

Regular Price $249.99
Sale Price $249.99 Regular Price $1,249.95
-80%

S&S Cycle 136

Regular Price $319.99
Sale Price $319.99 Regular Price $1,599.95
-77%

Koso 170cc Big Bore Kit Honda Grom 2014-2020

Regular Price $110.63
Sale Price $110.63 Regular Price $481.00
-80%

S&S Cycle 80

Regular Price $731.99
Sale Price $731.99 Regular Price $3,659.95
-80%

S&S Cycle 106

Regular Price $236.79
Sale Price $236.79 Regular Price $1,183.95
-80%

S&S Cycle 129

Regular Price $319.19
Sale Price $319.19 Regular Price $1,595.95
-80%

S&S Cycle Power Pack For Harley Twin Cam

Regular Price $669.19
Sale Price $669.19 Regular Price $3,345.95
-80%

S&S Cycle 124

Regular Price $1,399.99
Sale Price $1,399.99 Regular Price $6,999.95
-80%

S&S Cycle 74

Regular Price $731.99
Sale Price $731.99 Regular Price $3,659.95
-80%

S&S Cycle 124

Regular Price $306.99
Sale Price $306.99 Regular Price $1,534.95
-75%

BBR Motorsports Big Bore And Cam Kit

Regular Price $95.50
Sale Price $95.50 Regular Price $382.00
-80%

S&S Cycle 132

Regular Price $671.99
Sale Price $671.99 Regular Price $3,359.95
-80%

Cylinder Works Big Bore Cylinder Kit

Regular Price $128.79
Sale Price $128.79 Regular Price $643.95
-80%

S&S Cycle 132

Regular Price $671.99
Sale Price $671.99 Regular Price $3,359.95
-80%

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

Regular Price $187.39
Sale Price $187.39 Regular Price $936.95
-80%

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

Regular Price $195.79
Sale Price $195.79 Regular Price $978.95
-80%

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

Regular Price $121.00
Sale Price $121.00 Regular Price $605.00
-80%

S&S Cycle 124

Regular Price $1,399.99
Sale Price $1,399.99 Regular Price $6,999.95
-80%

S&S Cycle Power Package 124

Regular Price $653.19
Sale Price $653.19 Regular Price $3,265.95
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