Re: Just set up a new lower engine, and now the rear wheel locks when clutch is engag
Originally Posted by MotorBicycleRacing
That triangle mark is to indicate where the ring pins are so points to the intake side.
All my pistons have them.
Other pistons have an arrow that points to the exhaust port.
There was nothing wrong with your piston.
I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!