Most Read Technical Articles
- 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
- The REAL Function of the Ring
- Piston Deck Height Measuring and Its Importance in Head and Engine Design
- How to Read Spark Plugs
- 2 Stroke Engines: Operational Theory -->Does the bigger, higher HP engine require more or less fuel?
- PRESSURE WAVES IN YOUR PIPE AND HOW ELEVATION EFFECTS THEM
- WHAT CAUSES A 2 Stroke Engine to COLD SEIZE?
- Polaris CFI-2 Pistons and how long you should let it "Warm Up" (controversial)
- Polaris Piston Myths vs. facts and "Fix Kits"
YAMAHA YZ 250 2 STROKE PERFORMANCE
RK TEK IS 100% CONFIDENT IN THE PERFORMANCE OF THESE 250cc AND 300cc HEADS!
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...
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 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),...
Series III - Rotax Twin Engine Heads
Heads for Series III (600, 600HO, 700, and 800) and IV (800R) Ski-Doo Motors
POLARIS PRO and AXYS 858 CFI Big Bore
If you are looking for HUGE TORQUE and HP Gains.. then look no further.
Polaris 900 Twin Heads
RK Tek has developed an AWESOME Billet Head for the 900 Twin Fuel Injected Power-Plant.... The OEM head on this engine...
Polaris 800 Cheater Heads
Polaris 800 CFI Drop In Kit
POLARIS 800 (2008-2015)CFI and AXYS "Direct Replacement Piston Kit NO HEAD REQUIRED!
Polaris 800 CFI 12HP or 20HP Drop In Kit - REV 1
2008-Present (AXYS ALSO) POLARIS 800 CFI 12HP or 20HP "Drop In" Piston/Head Kit 2 DIFFERENT KITS TO CHOOSE FROM. BOTH...
POLARIS 600 Twin Performance Kits
This kit will AMAZE you in how they transform the 600 power-plant from a slightly "LAZY" 600 to a "Torque-Monster"...
Polaris 600 Twin Drop In Kit
Polaris 600 Twin Drop In Kit
This kit will AMAZE you in how they transform the 600 power-plant from a slightly "LAZY" 600 to a "Torque-Monster"...
Polaris 600 Cheater Heads
KTM 150 Custom Billet Heads
RK TEK IS 100% CONFIDENT IN THE PERFORMANCE OF THESE 250cc AND 300cc HEADS!
Honda CR 500 Heads
Make no mistake this head is the forerunner and most others just try and duplicate its stellar performance
Honda ATV Heads
Make no mistake this head is the forerunner and most others just try and duplicate its stellar performance
GAS GAS 250 & 300 2 STROKE PERFORMANCE
The Stock 250 head is a VERY inefficient design and leaves A LOT of Performance on the table.
Direct Replacement Piston Kit
POLARIS 800 (2008-2018 - Present) CFI and AXYS "Direct Replacement Piston Kit NO HEAD REQUIRED!
Cylinder Porting
AS OF 2005.. RK Tek is porting cylinders using CNC Vertical Machining Centers (CNC porting). This assures EVEN porting...
Custom Billet Heads
RK TEK IS 100% CONFIDENT IN THE PERFORMANCE OF THESE 250cc AND 300cc HEADS!
Billet Heads
Our "Hemi" design utilizes tighter squish clearances and a narrow squish band which will increase combustion efficiency...
