Big Bore Engine Kit / RZR 1065cc Chain Tensioner Style: (see picture for reference):A stock style compression spring we

stock style compression spring we offer has a much better rate and is designed to work with our custom helix

Excellent mid-range and torque gain

Available for Firecats

Increased Airflow & Response: Smooth internal walls eliminate turbulence

This gives you precise control over where the mass is distributed—letting you load the heel for an explosive holeshot

Big Bore Engine Kit / RZR 1065cc Chain Tensioner Style: (see picture for reference):A stock style compression spring weThis 96mm big bore for your Polaris 1000 significantly increases horsepower and torque! We take the stock 1000 cylinder and precision bore and nikasil plate it to our specification. We then send you with 2 high performance forged pistons, rings, circlips and wristpins. It also includes a base gasket and head gasket. Stock cylinder exchange required unless purchasing outright. Included in base kit: Bored & Re Nikasiled cylinder, two pistons, rings,