Honda CB750 Piston Ring Set - 1st Oversize (0.25mm.) - Replaces Honda OEM 13021-425-004 Mounts & Rubbers Compare the original exhaust layout

Compare the original exhaust layout

wrist-pin fit

Main specification: 1/2"

and installed location

Confirm listed specification: 412 x 126

Honda CB750 Piston Ring Set - 1st Oversize (0.25mm.) - Replaces Honda OEM 13021-425-004 Mounts & Rubbers Compare the original exhaust layoutHonda CB750 Piston Ring Set 1st Oversize (0. 25mm.) Replaces Honda OEM 13021 425 004. This piston ring set seals combustion pressure and controls oil at the piston when matched to the bore and ring grooves. Use only after measuring bore condition, piston to cylinder clearance, ring groove clearance, and installed ring end gap. Install each ring in its specified groove and orientation. Fitment Compatibility Fits Honda: CB750K (1979 82) CB750L (1979)