From Moped Wiki
Derbi Start 3 general information
Derbi start 3 is a late model derbi moped engine. It is similar to the revolution/start 5 engine but with a shorter stroke, 10mm wrist pin, flat reed size output shaft and a larger transfer cylinder.
- 6204 x2
- f-34660 Caged Needle Bearing
- 20x35x7 x 3