Anyone know the factory spring free lengths for RZ's?
I'm overhauling my 86 RZ250 and went out and ordered from YSS suspension AU the springs and PD Valve kit. It seems on their site all the models from 83-96 suit the same spring and PD valve for Rd/RZ 83-96
Anyway I measured the old spring that came out and its free length is 417mm and OD is 28mm
The new spring is measured at 490mm and 26mm OD (OD = outer dia of the spring spiral)
So that's quite a bit different. My old Haynes manual for the 350 models says all except '83 are 429mm which is very close to my original springs.
The original spacer is 100mm long + spring = 517 which is longer than the new spring.
- Im not sure if I discard the original spacer which would not make the same length overall
The old spring in the bike was wrong
YSS have stuffed up my order
Looking at the part numbers for the bike the spring part numbers are the same except for the leading 3 digits
The piston, little rebound spring and oil lock parts are all the exact same numbers for all models.
- 88 model = 1UA-23141-00
86 model = 1UA-23141-00
85 model = 51L-23141-00
84 model = 31K-23141-00