These stock replacement cams for Big Twin Flatheads of the U series are similar to original parts but the lobes have been redsigned using modern computer cam design and smoothing techniques.
- fits Big Twin Flatheads 1937-1948 (U Models)
- replaces Harley-Davidson part number 25512-37, 25510-37, 25511-37, and 25513-37
- gross weight: 2.32 kg
Cannonball Big Twin Flathead Crankcases
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