Truett & Osborn Stroker Flywheels for 45” Flatheads
- Flywheels by Truett & Osborn
- fits 45”/750cc W, WR, WLDR and G models 1937-1973
- for Sportster crankpins and connecting rods
- steel
- Ø 7-7/8”
- stroke: 4-1/2 ”
- 900 cm³
- USA
- gross weight: 8.91 kg
As faithful, docile sidevalves, the 750 cc Harley-Davidson models have a small power shortfall. To correct it, the rule is: nothing replaces cubic inches… except more cubic inches!
With Truett & Osborne Stroker flywheels, the stroke increases from 3-13/16” to a full 4-1/2”, giving 876 cc instead of 742 cc (54 cuin instead of 45cuin).
Special Stroker pistons are required and are also available. Installation is not straightforward: the flywheels must be balanced to the piston and connecting rod weights, and the engine cases and cylinders must be machined.
We therefore recommend consulting an experienced workshop.
The selection includes:
- flywheels for stock 45” crank pin and connecting rods
- flywheels for racing purposes which work with stronger 1957-84 Sportster crankpins and connecting rods
Accessories:
60-590
Graf Stroker Pistons 45”/750cc Flathead
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: service@wwag.com