SKU:11-0461
Upgrade your Harley-Davidson FL with S&S Cycle’s 74 inch Overhead Valve Forged Piston Set,.060 oversize. These forged pistons are machined to fit 4-3/4" and 4-5/8" stroker flywheels, enabling versatile compatibility for common stroker configurations in vintage builds.
The kit includes pistons, rings, wrist pins, and retainers for a complete installation (part number 11-0461).
Compression ratios depend on stroke: approximately 8.25:1 with a 4-3/4" stroke and about 9:1 with a 4-5/8" stroke, delivering more power and efficiency when configured to your engine.
Designed for Harley-Davidson FL models dating from 1941 to 1950, and manufactured in the USA for quality and durability.
Installation notes: bore size adjustments may be required for proper fitment. Follow the official guide for installation, and perform a proper break-in by running the engine at moderate speeds for at least 500 miles to seat rings and piston surfaces.
To support a seamless installation, pair this set with the recommended accessories listed below.
Upgrade your Harley Davidson FL engine with the S&S Cycle 74 inch Overhead Valve Forged Piston Set, part number 11-0461. Crafted with precision, these pistons are machined to fit both 4-3/4 inch and 4-5/8 inch stroker flywheels, providing versatile compatibility for a range of custom builds. The set includes high-quality rings, wrist pins, and retainers, ensuring a complete installation for optimal engine performance. When used with a 4-3/4 inch stroke, this piston set delivers a compression ratio of approximately 8.25:1, while with a 4-5/8 inch stroke, it raises to about 9:1, offering increased power and efficiency. Engine modifications, such as bore size adjustments, are essential for proper fitment, with an 80 inch engine featuring a 3-1/2 inch bore corresponding to a 3-7/16 inch +.060 bore size. Proper break-in procedures recommend running the engine at moderate speeds for at least 500 miles, avoiding excessive low gear operation to ensure longevity of the new pistons and rings. For detailed installation instructions, refer to the official guide at this link. This piston set is manufactured in the USA, ensuring quality and durability for vintage Harley Davidson FL models dating from 1941 to 1950. Pair it with recommended accessories such as the 74 inch FLH Piston Ring Set.060 Oversize and specialized tools like the Ring-O-Matic Ring Compressor Kit and Connecting Rod Clamping Tool for a seamless installation experience.
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