Arctic Cat M-8 & F8 925cc Big Bore Kit

The RK Tek 925cc Big Bore kit is quite different from other Big Bore Kits on the market.

This kit uses a VERY custom designed piston that is much lighter and allows for better ring seal.

This kit is rated at 190+HP with the stock exhaust system

RK Tek takes your stock cylinders and will bore them to 91.5mm (stock is 85mm) and then port them using our unique CNC porting technique.

We then finish off the porting with hours of hand grinding to achieve our special porting lay-out and design.

We than couple this with are industry leading and Patent Pending Billet Quad Head set up for YOUR specific elevation and octane you will be feeding this power-plant!

With this information ,on hand, there will be no problems keeping your engine reliable and safe during your riding season.

After porting, the cylinders are re-plated with NikaSil coating and diamond honed to EXACT specs to fit the custom piston.

The kit comes complete with the following: NOTE: we require your cylinders and exhaust valves to do this over-bore

1) Custom CNC Ported cylinders

2) New cylinder Plating

3) 2 RK Tek Custom Designed 91.5mm Pistons with rings and wrist pins

4) Torqueline Pat Pending 7075 Billet Aluminum and Anodized Quad Head with Domes

5) Base gasket

COST of this kit is $1950.00 plus shipping.

NOTE: This kit is for ALL 2007-present Arctic Cat 800 Twin Laydown Engines!

See DYNO Tech Research CUSTOMER Dyno Sheet Below.

NOTE: This Dyno run was done on 91 octane with a BRAND NEW 2012 Pro-Cross 800 that still had the premix in the tank!!

It was NOT RK Tek's personal sled all "tuned up" and taken to DTR. It was just a customer of RK Tek's!

More power to come!! Still working on this kit.. Expect 200HP on PUMP Gas!!!

2012 ProCross RKT 925 Big Bore Kit Boon Docker Control Box Numbers

190+ HP Tune

5000 10 10 12

6700 06 10 10

7800 04 10 10

8100 04 10 10