Wally, I dont think its my engine which snapped the bar, but most likely my style of driving. I enter and exit coners at high speed till the tyres start screeming. I guess that plus very hard setting of the rear dampers could be also facts contributing to the failure!
Btw its a small engine
88x69 w110 44 heads stock carb, bas exhaust.
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But animal is being chained till next month. T4 103x80 schl.340 48x40, 48idfs,remmele's exhaust.