Ski Doo 600HO-RS/700 Big Bore Kits

Ski- Doo Rotax Series III 734cc Big Bore Kit for the 600HO/RS and 700 Twin (150+HP)

PLEASE NOTE:   You will need to CALL for this kit and you must send in your cylinders, OEM Head, and RAVE valves in order for this kit to be completed.

Also NOTE: For the 600HO/RS Big Bore Kit you need to use 700 (1999-2003)cylinders and RAVE valves.

The Series III 700 Twin was BY FAR the most impressive 700 twin on the market (at that time)!!

However; as you read above (hopefully), it is plagued by poor heat conduction from the piston to the cylinder wall via the ring. RK Tek tried various combinations, including cryo-genics and other treatments.. but was unsuccessful in solving the problems associated with the OEM pistons and rings.

This forced us to come up with another solution to the problem and the solution is the 734cc Big Bore kit. This kit is nothing short of OUTSTANDING!! Throughout the 2003 season.. we logged over 4000 TROUBLE-FREE miles on this kit!! This set-up is absolutely bullet-proof!! Besides being bullet-proof.. this kit produces some serious POWER! It is no contest against another 700 or even an 800 twin!! GONE!! are those inconsistent running DOO 700's!!

This kit is nothing but SOLID!!

The 734 is rated at 150HP (with full porting) on pump gas and has an EXTREMELY wide power-band. This engine's torque curve is so broad it is truly amazing!!