原帖由 rk2 於 2007-2-23 10:19 發表
what is the difference ? Is it the latest model ?
Typical 'PLUS 2' differences are:
- Lightweight cooling head
- New carter backplate
- O-Ring supported combustion chamber
The name is actually a code: the first number is for the amount of crankcase ports, the second number for the thicknes of the front bearing and the last number stands for the amount of transfer ports in the sleeve.