Most Read Technical Articles
- Technical Article List
- OILS: 2 Stroke Vs. 4 Stroke Synthetic vs. Non-Synthetic
- Carb Sensitivity and Pipe Bang
- DUAL RING PISTONS VS. SINGLE
- Polaris CFI-2 Pistons and how long you should let it "Warm Up" (controversial)
- Cranking Compression Vs. Octane Requirements
- Polaris Piston Myths vs. facts and "Fix Kits"
- Is your clutch lying to you?
- DOES YOUR FUEL INJECTED SLED REALLY NEED A FUEL CONTROLLER? ARE THE PRE-PROGRAMMED CONTROLLERS OFFERED REALLY RIGHT FOR YOUR ENGINE?
- Torque-Line 600/700/800 Ski-Doo Head Instructions
Ski Doo 800 Dual Ring Replacement Pistons
RK Tek SKI-DOO 800R and ETEC DIRECT Replacement DUAL RING Pistons
IF you have NOT read the tech article on the reason behind the power problems of the Rotax 800 Twin Engine HERE (clicky) and HERE(clicky) PLEASE, take a little time to read it so that you can have a better understanding of what is REALLY happening inside this engine.
OK, Now, that you have a good understanding of the problems associated with the 800 Series III Engine and R Engine.... Let's look at a few solutions to what plagues this awesome power-plant!!
Our pistons have a geometric design that is specifically for the rigorous use that a snowmobile engine subjects the piston to... We also use a different alloy that better suits the snowmobile engine..
ALL if our pistons are tested for at least ONE FULL SEASON BEFORE offering them to the public. Using this method, we can rest assured that they will handle the task without issues.
STOCK ETEC PISTON (2016) = 570 Grams
RK TEK DUAL RING 800R PISTON = 502 Grams
Since RK Tek is known for their unique and effective methods for “fixing” Rotax engine issues, this new engine was surely going to get the “full treatment” and get a “makeover”. This “makeover” came in the form of a new made Dual Ring Piston and Head Kit to drop in the new 800R Engine.
This Drop In Piston Kit was designed in the same manner as our Series III Engine 160HP Drop In Piston Kit. Remember we also have a Direct Replacement Piston Kit as well.
The power-fade and ring flaking problems VANISH!! with this kit.
This allows for an EASY, Bolt-On, power package that keeps you legal in most sanctioned events.
So, now, we have an engine with a MUCH better piston and ring design. Couple that with a custom combustion chamber designed specifically for this engine and you have yourself a recipe for a very SOLID and POWERFUL power-plant that will NOT power-fade (heat soak) on a long pull. This kit is also MORE reliable than stock. In other words… It will perform better and last longer than your stock engine set-up!!!
OK, What is required and what are the costs for this awesome kit?
RK Tek will send you the kit so you can put it in at your leisure (NO DOWN-TIME!!)
The cost of the kit is as follows:
Custom 82mm pistons (2) $185.00/each
Base gasket (1): $25.00 (optional)