[urq] 4000Q rear axles

[AF]

I ordered a left rear axle for a 4000q and it arrived with a 100mm inner joint. I am fairly to completely certain that all 85- 4000qs have 100 mm inner joints in the rear. This is completely wrong in ETKA then, which shows the same PN as the urq rears (108mm). Maybe the 1984 model had the urq 108mm rears. My question is this, does 100mm mean that the axle shaft itself is the smaller diameter one? Or were there thicker urq axles used with 100mm inner joints on some model? Thanks. 

Andrew Finney
1985 urq

Sent from the road