YAMAHA YZ 250 2 STROKE PERFORMANCE
RK TEK IS 100% CONFIDENT IN THE PERFORMANCE OF THESE 250cc AND 300cc HEADS!
800R - Rotax Twin Engine Heads
Heads for Series III (600, 600HO, 700, and 800) and IV (800R) Ski-Doo Motors
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 800R Dual Ring Replacement Pistons
Our pistons have a geometric design that is specifically for the rigorous use that a snowmobile engine subjects the...
Cylinder Porting
AS OF 2005.. RK Tek is porting cylinders using CNC Vertical Machining Centers (CNC porting). This assures EVEN porting...
Series III - Rotax Twin Engine Heads
Heads for Series III (600,600 RS, and 800) and IV (800R) Ski-Doo Motors
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...
800R - Drop In Kit ETEC & PTEK
RK Tek spent a better part of the 2008 Season developing a performance package for the new Rotax 800R(ETEC is the SAME...
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...
800 Series III - Drop In Kit
This "Drop In" Kit has been in existence since 2001. It is PROVEN Kit that WILL deliver the performance claimed. There...
Polaris Patriot 850 and 900 Dual Ring Direct Replacement Pistons
2019-Newer 850 and 900 Patriot Engine Dual Ring Replacement Pistons
Polaris Patriot 850/900 Billet Heads
Torqueline Series Polaris 850 / 900 Patriot Billet Heads
Polaris 600 Cheater Heads
PATRIOT 850 and 900 DROP IN KITS
RK TEK has developed an AWESOME Drop In Kit for the Patriot 850 and 900 Power-Plants
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 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 PRO and AXYS 858 CFI Big Bore
If you are looking for HUGE TORQUE and HP Gains.. then look no further.
Polaris 800 Cheater Heads
Polaris 800 CFI 12HP or 20HP Drop In Kit
2008-Present (AXYS ALSO) POLARIS 800 CFI 12HP or 20HP "Drop In" Piston/Head Kit 2 DIFFERENT KITS TO CHOOSE FROM. BOTH...
