HASTINGS DS-750694 2M4941010 Replacement Piston Rings Piston Rings - 3.875" + 0.010" - 95"/103" Big Bore - Twin Cam Product Type_Tires Domestic aircraft-grade billet aluminum alloy

Domestic aircraft-grade billet aluminum alloy

Levels front and rear suspension

Alternative top case mounting plates are available separately

Note:Required tank fitting for part # 1020-2033

2025-2026 Harley-Davidson Softail Street Bob FXBB 2021

HASTINGS DS-750694 2M4941010 Replacement Piston Rings Piston Rings - 3.875" + 0.010" - 95"/103" Big Bore - Twin Cam Product Type_Tires Domestic aircraft-grade billet aluminum alloyFeatures Includes top compression rings, second compression rings, and oil control rings Top Compression Rings are Barrel Face Helps in the the heat transfer process between the piston and cylinder wall Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft Second Compression Ring are Napier Reverse twist ring along with a taper machined ring face duplicates the OD bottom side