BMP 1065cc Big Bore Engine Kit


Regular price $1,299.00

Cylinder Core Exchange Options (see drop down menu): 

    • Option 1: Purchase Outright - No core is required to be sent in - Raises kit price by $400
    • Option 2: Exchange cylinder, send yours back with 14 business days. As soon as you do, the $400 charge will be refunded. CORE MUST BE SENT BACK WITHIN 14 BUSINESS DAYS. If no core is received within 14 business days no credit will be applied. 
    • Option 3: Exchange cylinder - Your order will be waiting for your cylinder to arrive. Once it does, we will ship the kit. No core charge will be applied since we will have your cylinder prior to shipping the big bore cylinder. 
    • Must measure Cylinder thickness so we can send back the correct cylinder to you
    • Choose style of chain tensioner 
    • PN: ADBM12-304 


This 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, circlips, wristpins, base gasket, and head gasket.

What to send: Cylinder only unless purchasing other items that require a core.

Bikeman Performance

920 Pine Street

Saint Croix Falls, WI 54024

Watch the video below for proper engine break-in protocol: