The Crank Shop has developed custom oval and offset carburetor boring. Depending on carburetor design, we use the process that allows us the largest intake for maximum performance increase. The top of the slide must be...

We do cylinder head modifications in house including cutting the squish, machining the chamber to lower the compression, and planing the head. To machine the 809 head for inserts we will need the cover to be sent with...

Extensive machining of the upper crank case gives increased flow and HP throughout the range. Should be used with 44mm carbs and intake minimum. Send case, intake with rubbers and carbs.