Big Bore Kits
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...
POLARIS PRO and AXYS 858 CFI Big Bore
If you are looking for HUGE TORQUE and HP Gains.. then look no further.
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 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...
