- Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals
- Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1977-1978 | Yamaha | Chappy 80 LB80 | |
| 1976-1977 | Yamaha | Chappy II 80 LB80 | |
| 1988-1990 | Yamaha | DT50 | |
| 1981-1983 | Yamaha | DT80 | |
| 1974-1980 | Yamaha | GT80 | |
| 1980-1981 | Yamaha | MX80 | |
| 1974-1975 | Yamaha | TY80 | |
| 1980 | Yamaha | YZ50 | |
| 1981-1983 | Yamaha | YZ60 | |
| 1974-1977 | Yamaha | YZ80 | |
| 1980-1992 | Yamaha | YZ80 | |