Originally Posted by Crashmaster
bender: Cheers mate.
JRRobiso: I think its a carbon fibre plate to stiffen up the spur.
If you look closely, the backing plate is screwed down with blue countersunk screws which is what we already have on our backing plate but it looks like the spur gear was flipped. Normally the backing plate on our 415s are facing inside the center pulley not facing outside or away from the center pulley.