TKO Ceramic 12x21x5mm Rear Engine Bearing (TRX 3.3) (1)
[TKO-CB-6801]

TKO Ceramic 12x21x5mm Rear Engine Bearing (TRX 3.3) (1)
mrxracer - Rating: 5 of 5 Stars! Verified Owner Saturday, May 15, 2010
excellent bearing for the older novarossi .12 engines with the 12mm crank, 2 gallons in my nova/top.12 and bearing is still smooth and slick. also when installing make sure the balls are facing outward towards backplate.