Description
Worn piston rings are a silent killer of engine performance—they bleed compression, increase oil consumption, and rob your Big Twin of power just when you need it most. The Wiseco 3437X Ring Set restores proper cylinder sealing with precision-engineered rings that deliver consistent compression and efficient combustion across the entire RPM range. If you’re rebuilding a single piston or refreshing your top end, this is the OEM-quality replacement that keeps your classic Harley running strong.
- Bore diameter: 3.437″
- Fitment: Harley-Davidson FL 1948-1964
- Application: Single piston replacement
- Material: Premium ring alloy
- Reduces oil consumption
- Improves compression sealing
- Bolt-on installation
- Manufacturer: Wiseco
- Part number: 3437X
