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 OEM 25512-37, 25510-37, 25511-37, and 25513-37
Cannonball Big Twin Flathead Crankcases
The selection includes cases with a smooth, uniform glass bead blasted finish and cases with an NOS (new old stock) finish. The latter means the finished cases are not bead-blasted but treated in a traditional process which gives them the appearance of new factory cases that had been sitting on the shelf for 50 years. Perfect for those "patina restorations".
All cases feature laser-engraved CB production numbers, which are registered and filed.
Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 09:00-16:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: email@example.com