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29er / Re: Carbonda 909 120mm vs 100mm
« on: July 14, 2026, 05:46:30 PM »
There's a chance you can pull a limit shim from inside of the shock to get 45mm travel. Assuming its the 42.5 Fox Performance everyone was buying for their 936 and 909 then you should be good, or easy for a shop to do.
I had the 936 with 120 upfront and 42.5, "106" in back and then built a 120/120 909 SL. It is definitely lighter, but that's partly down to the build, but that comes with a bit of rear flex for me, could be from light wheels. There is notable pedal bob when on pavement and not locked out. Sag is set at 20% so already high, I should probably try a spacer in it. It also rides a lot higher. The 120mm rockers for both bikes push the bottom bracket up and adjust the geo a bit. For a long time they didn't give updated charts but I believe their new website has real geo chart for 120.
I had the 936 with 120 upfront and 42.5, "106" in back and then built a 120/120 909 SL. It is definitely lighter, but that's partly down to the build, but that comes with a bit of rear flex for me, could be from light wheels. There is notable pedal bob when on pavement and not locked out. Sag is set at 20% so already high, I should probably try a spacer in it. It also rides a lot higher. The 120mm rockers for both bikes push the bottom bracket up and adjust the geo a bit. For a long time they didn't give updated charts but I believe their new website has real geo chart for 120.

