Racing 5speed Gear Box

It is not possible to run a CR750 engine reliably on the standard gear change for four main reasons. Reliability, Durability and incorrect ratios combine with a notchy and somtimes hit and miss gear change. Over Racings brand new racing five speed box addresses all these problems:

Wider and larger gear module improves strength and durability of tuned engine

Main shaft, counter shaft, and final driven shaft are re-designed and newly engineered for increased durability and reliability.

Enough clearance between clutch center lock nut and main shaft to allow enough torque to be applied, ensuring long term reliability

Also fits standard engine cases without modification

The use of a tapered dog makes for smoother gear changes and less negative changes, increasing durability of engine.
Gear Ratio1st2nd3rd4th5th
Main gear1619212325
Counter gear3531292726
Ratio 2.1881.6321.3811.1741.040

Over racing specify this five speed assmebly in their CR750 race bikes.