Big Bore Kit 82mm / 800 RZR/Ranger
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Increase your horsepower and torque with this big bore kit from BMP! We bore out your stock cylinders to 82mm, and send you on your way with a Cometic gasket kit. The extremely high-quality forged Wossner pistons are available in a 10.5:1 pump gas compression ratio. This is an exchange cylinder program, however, you may purchase the kit outright for only $600 extra!
Head porting, high-performance cam, performance exhaust, power commander, and clutching are recommended options. You can run the big bore cylinder on a 100% stock setup, but it will run a little on the lean side. Since dirt ingestion is the #1 cause of motor problems in the RZR 800, we recommend our high-flow intake kit.
Please fill out our WORK ORDER FORM and send engine work to:
Bikeman Performance
920 Pine Street
Saint Croix Falls, WI 54024
Watch the video below for proper engine break-in protocol:
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