4-speed 'close-ratio' transmission for 750cc Flatheads - 41-51 WL (NU) Patches with a spun-louvered core

with a spun-louvered core

premium features

After unlocking

Foamet (Foam Coated Metal) with a silicone bead

heavyweight chain with large rounded links

4-speed 'close-ratio' transmission for 750cc Flatheads - 41-51 WL (NU) Patches with a spun-louvered coreIdentical appearance to the stock 3 speed transmission. 1, 2, 3 are smaller and 4th gear is identical to OEM ratio. We all know that the power band of 45" side valve engines is not all that wide and torque not that great. The original 3 speed transmission can, especially when accelerating up hill with a sidecar, or cruising at a certain speed, give you the feeling that you'd like an extra gear to smooth things out. Especially shifting from 1st. to