Description
Rebuilding a two-stroke or four-stroke top end and need to lock the wrist pin in place? The Wiseco 10mm Round Wire Locks are the small but essential clip that keeps the piston pin from walking sideways and scoring the cylinder wall.
A wrist pin lock does one job, and it has to do it every time the engine fires: hold the pin centered in the piston boss so it can’t drift into the bore. Riders replace these circlips as a matter of course during any piston or pin swap, since a used clip can lose its spring tension and is never worth reusing on a fresh build.
- 10mm round wire design sized for piston bores using this pin lock diameter
- Sold as a Wiseco piston pin lock, part of the Wiseco piston component lineup
- Keeps the wrist pin centered in the piston pin boss during operation
- Simple round wire profile seats into the piston’s factory pin lock groove
- A low-cost item to install fresh anytime a piston or pin is serviced
- Fits alongside Wiseco’s broader lineup of rebuild accessories such as ring compressors and honing brushes
- Works as a direct replacement for a factory or aftermarket 10mm wire lock
Sized specifically as a 10mm round wire lock, this Wiseco clip suits any rebuilder installing a piston with a matching 10mm pin lock groove and wants the wrist pin properly retained before buttoning up the top end.








