Engine Damns vary due to different clutch housing.
We have designed an Engine Damn for the Chung Yang, Trevor Simpson and Zenoah motors using a combination of different clutch housings.
For our purposes the Turtle Racing clutch housing is equal in dimension to the "stock" Chung Yang (CY) housing.
The Standard Engine Damn, part number: tr130 fits motors using the stock Chung Yang ("Fuelie") clutch housing.
Part number tr131 fits motors using a Zenoah brand clutch housing.
The Trevor Simpson Engine Damn 1, part number: tr132 fits TS billet reed cases, using a CY clutch housing.
The Trevor Simpson Engine Damn 2, part number: tr133 fits TS billet reed cases using a Zenoah clutch housing.
All engine damns will fit regardless of whether the crankcase is 2-bolt or 4-bolt.
