Yamaha R6/1 Front end on SV?

Took a few measurements today.
Inside hole for steering stem 22mm
R6/R1 triple stem diameter 28mm
total height 28mm, lower section height 15mm, upper reduced diameter height 13mm
lower spacer outer diameter 38mm, upper section diameter 28mm

I currently run 12mm of fork above the triple.

Picked up 98 R1 forks today and confirmed upper triple hole same as R6 so spacer will be similar to the 1st one I had made. The only issue is the R1 forks are 20mm shorter than the R6 so I will probably reduce the spacer bottom section height to 5mm from 15. This will allow me to run the forks approx flush with the top of the triple.

John

few more pics

[yorkie_chris]

Originally Posted by jrussell

The other advantage is fork travel. R6 front gives you 20mm more fork travel which is a big benefit on track or street.

How long are the forks topped out?

The axle to top of fork cap distance is exactly the same for SV and R6.(curvy) R6 has 120mm fork travel vs 100 for SV. It has enabled me to run 0.90 springs and everytime I check my zip tie I still have at 7-9mm of travel remaining. I am not light either. 215lbs plus gear, track is bumpy as hell.

John

Your question got me thinking and I looked up the fork travel spec on the stock forks and what I found online was 130mm. I could have sworn I measured mine and it was 100mm but it looks like I was wrong. I will have to measure it again. For now disregard my comments on more fork travel.

John

[yorkie_chris]

Depends if you are including hydraulic bottoming cone and such.

Removing bottoming cone on stock gets you more travel but then you can't drop forks to lower nose because dust seal hits yoke.