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Bought some 100mm SID's from the classifieds and may be looking at increasing travel to 120mm. I know I will need another air spring shaft but i'm not 100% if the forks can be extended and if so which air spring to use. According to Rockshox trailhead they are Sid-RL-B3. Part number is 004019914002. I think they are 2018/19 forks with charger2 and debonair air spring. I'm thinking they may be extendable as they have sag/travel marks for 80mm,100mm and 120mm on the stanctions. Any advice appreciated.
I did the same with an older sid. I just got the longer air spring shaft and it works fine. I 'think' I got it from bike24. They were pretty clear which air-shaft went with which fork iirc.
Ok thanks I'll have a look. Part number and compatibility are confusing!!