The Yamaha XS650 powerplant, bored out to 750cc, has been raced solo for some time in CRMC events and is becoming increasingly popular with classic sidecar crews, building a good reputation for strength and reliability.
Heiden Tuning is a Dutch-based company that specialises in the XS650. Drivers can now obtain new cylinder blocks from Heiden.
Although slightly modified from standard, after careful consideration they have been accepted and are now eligible for CRMC events.
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