Most Read Technical Articles
- 2 Stroke Engines: Operational Theory -->Does the bigger, higher HP engine require more or less fuel?
- The REAL Function of the Ring
- DOES YOUR FUEL INJECTED SLED REALLY NEED A FUEL CONTROLLER? ARE THE PRE-PROGRAMMED CONTROLLERS OFFERED REALLY RIGHT FOR YOUR ENGINE?
- OILS: 2 Stroke Vs. 4 Stroke Synthetic vs. Non-Synthetic
- Polaris CFI-2 Pistons and how long you should let it "Warm Up" (controversial)
- Piston Deck Height Measuring and Its Importance in Head and Engine Design
- How to Read Spark Plugs
- Polaris Piston Myths vs. facts and "Fix Kits"
- PRESSURE WAVES IN YOUR PIPE AND HOW ELEVATION EFFECTS THEM
- WHAT CAUSES A 2 Stroke Engine to COLD SEIZE?

Big Bore Kits
Big Bore Kit
RK Tek spent a better part of the 2008 Season developing a performance package for the new Rotax 800R(ETEC is the SAME...
827 (172HP)Big Bore Kit
RK Tek Has developed an 827 (REALLY an 830cc) kit for the 2001-2007 800 Twin Engine. While we were not planning on big...
Ski Doo 600HO/700 & 500SS Big Bore Kits
The Series III 700 Twin is BY FAR the most impressive 700 twin on the market!! However;as you read above (hopefully),...
SKI-DOO 500SS and TNT Engine
This over-bore turns your 600cc engine into a 662cc engine. We use the same piston in this kit that is used in out...
POLARIS PRO and AXYS 858 CFI Big Bore
If you are looking for HUGE TORQUE and HP Gains.. then look no further.
Arctic Cat F7 /M-7 to F8/ M-8 Big Bore Kit
RK Tek has developed an outstanding option for your Lay-down 700 engine. Rather than spend your hard earned $$ on the...
Arctic Cat PRO,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...
Ski Doo 500SS Big Bore Kits
The Series III 700 Twin is BY FAR the most impressive 700 twin on the market!! However;as you read above (hopefully),...