340/440 RACE MODIFICATIONS

We have NO pipes available for the stock engine. We were unable to significantly improve on the stock pipe without losing the much needed torque in a small cc engine. Modified engine package for snowcross or lake racing engine runs at 9000 RPMs so we can maintain good torque with 15 HP gain. This package uses 44mm carbs, short RV cover, and runs on RACE FUEL. Years 1977 - 2006 can be modified. The 1970 Rotax style head for RV engines can modified for 16.5 to 1 head inserts. The domes are available in two different squish depths .030" or 0". Send your head to be machined.