Reproduction crankcases which meet or exceed highest restoration demands. Cast from state-of-the-art materials and machined on CNC equipment for strength and precise fitment. Intended to work with stock or identically constructed engine components. Finished and detailed like the original counterparts so these cases will smoothly blend into your old mill to give it a new life. For ease of installation both case halves are carefully matched and feature pre-installed case bushings, which are line bored and lapped for standard rollers. Cam bushings are already in place and reamed. (For exact measures pls see facts).
All cases feature laser-engraved CB production numbers, which are registered and filed.
- fits Knucklehead 1941-1947
- cam shaft bushing ID: 20.7 mm
- cast aluminum, cast finish
- replaces Harley-Davidson part number 24520-41
Quality information re. Cannonball Crankcases.
The W&W Cycles AG selection of Cannonball engine cases are not related in any way in terms of manufacture or distribution to the products of Motortechnic mfg (distributed in the USA by V-Twin mfg/Tedd Cycle Inc., among others).
We have been working for years with three German companies selected by us, who carry out the casting and machining, including the fitting and honing of the bearing races for the crankshaft.
For this reason we grant our own manufacturer's warranty for Cannonball products.
James Gasket Kits for Engines: Knucklehead 1936-1947
Truett & Osborn Flywheels
They are made just like the stock counterparts, i.e. the left wheel is thicker than the right one (exc. JD and 45”), with the same weight and resulting torque.
All versions are unbalanced and require adaption to the respective lower end components. All T&O flywheels feature pre-installed and replaceable connecting rod thrust washers, providing increased service-life and restorability.
Cannonball Knucklehead Tappet Guides
But help is on the way: Cannonball tappet guides are cast and meticulously machined in Germany to OEM specs and fit OEM and Cannonball Knucklehead cases. Just paint or coat them and you're ready to go.
Cannonball Knucklehead Oil Pump
Cannonball Aluminum Cylinder Heads for Knucklehead
Cylinders for Knucklehead
VG Big Twin Rigid Frames
Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: firstname.lastname@example.org