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RZR 800 big bore kit 's +2mm

Polaris RZR big bore kit

-CP big bore piston kit. Available in 9:1 (turbo) and 11.5:1.
-Bored OEM cylinder with replating and diamond hone. (core charge applies)
-Includes Cometic top end gasket kit.
-Most HP bang for your buck on a RZR 800.
Was: $1,075.99
Sale: $799.00
Save: 26%
Save: $276.99

Customize Your Item

- Cylinder core charge -
 * required
- Pick compression -
 * required


This is an OEM cylinder that has been bores out 2mm and replated with a diamond hone. This is a great reliable setup. This is one of our best sellers for the RZR 800. Your horsepower will increase by 5 across the board and will retain great reliability. Use 9:1 compression for turbo and supercharged applications and 11.5:1 for no turbo. 11.5:1 for use with 91oct or higher pump gas.

We do have a core charge on this cylinder. We need your cylinder back as a core to bore and replate for the next customer. We typically have cores in stock so if you are in a hurry we can send you the cylinder before you send yours to us. You would have to pay the 100% refundable core charge. When we recieve your good core we will refund you.

A good cylinder core has no cracks or dings that will effect use. Scratches are usually ok on the cylinders as we bore 2mm over. This means if the scratches are less than 2mm deep your cylinder is a good core.


Shipping Information

  • Item Requires Shipping
  • 20.0 lbs.
  • W18.0000” x H12.0000” x L8.0000”

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