Harley Big Twin Replica 74″ Overhead Valve Piston Set .040 Oversize. 1941-77

Harley Big Twin Replica 74″ Overhead Valve Piston Set .040 Oversize.

Fits Big Twin OHV -1941-77. Replica style 3-7/16″ bore piston set has a 8.5:1 compression ratio and is oversize .040. Piston set includes Hasting rings, 2 wrist pins and 4 circlips. Pistons have a steel expansion control strut cast. Check your parts book for correct fitment. Repro Parts.

**Note: Run engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears, in order to properly break-in new pistons and rings.

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