MMCM Ratio Change Replacement Kit

MMCM Scott Bonnar 45 / Rover 45 ratio change direct replacement kit comprised of new dual cutter sprocket, new intermediate sprocket and bearing, and new chain including half link.

Three rolling speed options available:

• Option 1 : 5.1 km/h
• Option 2 : 5.3 km/h
• Option 3 : 5.8 km/h

Average walking speed 4.8-5 km/h. Average standard SB45/Rover speed 8 km/h as tested.

The dual cutter sprocket for 20” machines with the original 47mm OD bearings and bearing housings is shorter than the 14” and 17” dual cutter sprocket. Please indicate below which bearing is present when ordering for a 20” machine.

Chain supplied may need shortening dependent on the position of the reel. Parts provided.