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Old 04-09-2014, 10:41 AM   #10
because I can
Joined: Sep 2010
Location: San Francisco Bay area
Oddometer: 9,116
I have seen aftermarket lightweight wristpins break but I didn't know what brand they were. The stock ones are way too beefy. A lot of even stock pins nowadays are tapered on the inside for lighter weight and strength were its needed.

Siebenrock claims their pistons are so much lighter but most all the weight savings is in the shorter wrist pins, not the pistons. Misleading AFAIAC.

All wrist pins are chromed and then centerless ground down to the a couple of .0001". Like fork tubes but a lot more accurately ground.

I still have stock pins in my bike. If I went for less weight, I would hone out some stock ones. Some of the aftermarket ones go too far in weight savings IMO.
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