Extend Your Polaris 800's Life & Boost Its Power with Our Durability Kit

If you own a Polaris 800 CFI or CFI HO, you know that the stock pistons and rings are prone to a short life. The short rods and pistons cause most machines to lose 20-30 lbs of compression after as little as 1,500 miles, leading to a noticeable loss in performance. How many miles are on your sled? If it's over 1,500, you need this kit.

Our Durability Kit is the answer. We've engineered a comprehensive solution that not only extends your engine's life but also gives you a significant performance boost. The secret lies in our specially developed, taller pistons.

Here’s how our kit outshines the competition:

• Superior Wossner Pistons: We use Wossner forged pistons—the best on the market—but with our unique design. Other companies may use Wossner, but their pistons lack the advanced features we’ve engineered.
• Taller Piston Design: At 0.250" taller than stock, our pistons drastically reduce piston rock and stress on the piston skirts and rings. This is a more effective and affordable solution than using longer rods, which can actually decrease power.
• Advanced Lubrication: To combat wear, we slightly changed the ring location, added lubrication holes on all four corners of the piston, and applied a Teflon coating to the skirts. We also designed "gas ports" that channel oil from the underside of the piston to lubricate high-load areas.
• Optimized Wrist Pin: We offset our wrist pin 0.020" toward the exhaust side to reduce skirt loading during the power stroke.
• Improved Ring Lands: We engineered a wider ring land between the rings to reduce ring temperature, further extending their life.

But we didn't stop there. The kit includes a cylinder spacer that serves two critical functions:

1. Corrected Volume: It raises the cylinder to match the taller piston, maintaining correct port timing and correcting the cylinder volume for the 800 CFI/CFI HO, which results in more efficient power.
2. Increased Airflow: The spacer lifts the cylinder's intake skirts out of the reed window. This reduces intake restriction and delivers more power at high RPMs.

This kit even produces a 6 horsepower gain with no EFI controller required!

What's included?

The kit comes with everything you need: two new Teflon-coated pistons, rings, wristpins, circlips, longer cylinder bolts, our machined spacer, longer dowel pins, and two base gaskets. If you're serious about keeping your Polaris on the snow, this Durability Kit is the best investment you can make.

Recommendations:

• Non-HO Motors: We recommend turning your oil pump up by one full turn on non-HO (Axys) models.
• All Models: It's highly recommended to pre-mix your fuel at 100:1 when possible. Since the fuel injector washes oil off the intake side of the piston, this extra lubrication will help extend piston life.

A Note on Break-in:

Proper engine break-in is crucial. It is your responsibility to follow the instructions. Do not operate at full throttle or high speeds for extended periods during the first three hours of use.

• DOWNLOAD INSTRUCTIONS HERE