There is NO Substitute for more cubic inches! Boost your little Flatty up to 54 cui or 900cc and experience the change from a lame duck to an agile pony. These 4.5” stroker flywheels require special stroker pistons which are also available. Recommended for qualified mechanics only because the flywheels need to be balanced and the engine cases and cylinders must be relieved for the rods to clear.
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
- fits 45”/750cc W, WR and G models 1937-1973
- stroke: 4-1/2 ”
- 900 cm³
Graf Stroker Pistons 750cc Flathead
These special Graf pistons are made for for small twin Flatheads with 4.5” stroker flywheels. They are shorter than stock pistons so the engine case baffle plates do not need to be removed. Complete with piston rings, pins and locks.
TWH Flat Track WR Footpeg Bracket
TWH Racing Brake Pedal
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