This is a Hex centre Pinion. Meaning it will only fit the Rovan Hex Bell.
This will fit on the Rovan LT Clutch Bell. The Losi Bell can be changed for a Rovan Bell.
This is not a straight fit product offered from Rovan.
We stock these for the speed junkies. You might have to change screws on the chassis as your engine mounting inserts will not work.
Some modification to the chassis plate might be needed to make extra space for the engine to move over.