Description
Piston pins need something to keep them from walking, and the Wiseco 12mm Round Wire Locks are sized to do exactly that on a 12mm pin during a top end rebuild.
Wire locks, also called circlips, sit in the piston’s pin bore grooves and stop the wrist pin from shifting side to side once the piston is installed, so replacing them anytime a piston comes apart is standard rebuild practice rather than something to skip. Wiseco backs its piston work with a range of performance accessories meant to help a rebuild go right, from hour meters and honing brushes to ring compressors, piston components, and carburetor jets, and these 12mm circlips are part of that same accessory lineup. Reusing old wire locks risks a pin working loose, so fresh ones are cheap insurance during any pin and piston installation.
- Sized for 12mm piston pins
- Round wire lock, or circlip, design
- Retains the wrist pin in the piston pin bore
- Part of Wiseco’s lineup of performance rebuild accessories
- Sits alongside hour meters, honing brushes, and ring compressors in that lineup
- A routine replacement item during piston and pin installation
Built for 12mm pins, these round wire locks suit anyone reassembling a piston during a rebuild who needs fresh retaining clips rather than reused ones.








