Big Bore Kits

S&S Cycle #910-0699 - Hooligan Kit - 883 cc to 1200 cc - Wrinkle Black - Sportster

Hooligan Engine Performance Kit Bolt on big bore kits mean easy installation with no machining and no rebalancing S&S bolt-in cams and premium tappets make the most of the added displacement Cams are .482" lift and 240° duration intake and 234°...

S&S Cycle #910-0700 - Hooligan Kit - 883 cc to 1200 cc - Silver Powdercoat - Sportster

Hooligan Engine Performance Kit Bolt on big bore kits mean easy installation with no machining and no rebalancing S&S bolt-in cams and premium tappets make the most of the added displacement Cams are .482" lift and 240° duration intake and 234°...

S&S Cycle #910-0701 - Hooligan Kit - 1200 cc to 1250 cc - Wrinkle Black - Sportster

Hooligan Engine Performance Kit Bolt on big bore kits mean easy installation with no machining and no rebalancing S&S bolt-in cams and premium tappets make the most of the added displacement Cams are .482" lift and 240° duration intake and 234°...

S&S Cycle #910-0702 - Hooligan Kit - 1200 cc to 1250 cc - Silver Powdercoat - Sportster

Hooligan Engine Performance Kit Bolt on big bore kits mean easy installation with no machining and no rebalancing S&S bolt-in cams and premium tappets make the most of the added displacement Cams are .482" lift and 240° duration intake and 234°...

S&S Cycle #920-0144 - Big Bore Kit - 83.50 mm - 750 cc - Royal Enfield® 650 Twin

Big Bore Kit Increases bore from stock Increase compression ratio from 9.5:1 to 11.0:1 Kit includes cylinder sleeves, pistons and head gasket Made in the USA

S&S Cycle #920-0145 - Big Bore Kit - 90.00 mm - 865 cc - Royal Enfield 650 Twin

Big Bore Kit Increases bore from stock Increase compression ratio from 9.5:1 to 11.0:1 Kit includes cylinder sleeves, pistons and head gasket Made in the USA

Wiseco VT2797 - Piston Kit with Gaskets - Standard - Twin Cam 88"/96"/103" Bored to 1746 cc (106 Cubic Inch)

Piston Kit with Gaskets Forged from high-silicon aluminum alloy for maximum strength and dependability Twin Cam pistons have Armor Plating which improves ring seal, eliminates ring micro-welding and improves the piston's ability to defend against...