Originally Posted by
johntrickle2
What does the M05-Ra front upright do? If I change the standard M05 one out. The Ra version just looks stronger, but has extra mountings.
Thanks.
The Ra uprights have a different kingpin offset so you can adjust track/steering width.
The narrowest track is if you use Ra upright with standard C hub, Standard is using Ra upright with Ra C hub or Standard upright with Standard C hub. and the widest track is Standard Upright with Ra C hub.
Narrowest to widest is nearly 5mm difference in track.
Remember that any change in track will require re-adjustment in toe out.