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- Apr 6, 2013
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Anyone know the weight of stock 650ss flat top pistons?
Mine are 224 grams (bare).Anyone know the weight of stock 650ss flat top pistons?
I have two types of wrist pins, thaose which have parallel inside bores, and those which have had a taper inside each end.Removing material from the inside of wrist pins was sometimes done when tuning an engine for high performance. This was done on the outside ends of the pins which locate in the piston. The finished shape at each end is tapered to avoid stress risers. Might be worth considering if all you can get is replacement pistons with thick/heavy wrist pins.