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S&S, 865cc big bore kit 11:1

865cc kit. Increases bore from stock 78mm to 90mm. 865cc kit. Complete kit that includes big bore cylinder sleeves, big bore pistons, rings, wristpins, wristpin clips and a head gasket. Increases compression ratio from stock 9.5:1 to 11:1.

Fits: > Royal Enfield: 650 Twin models

Fits: >

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