Air spring kits do not include top cap assembly unless specified
2013+ Reba/SID/Revelation SoloAir complete spring kit includes black top cap. Can be used to change travel to desired length (not compatible with 2012 and older DualAir forks)
SID A: upper tube inner diameter=27.8mm. Maximum fork travel=100mm. Upper tube gradient includes only 100mm and 80mm (DualAir only)
SID B: upper tube inner diameter=28.2mm. Internals and chassis parts designed for SID B (120mm max travel) are not compatible with SID A
2013+ Reba and SID B internals are interchangeable
Recon and Tora SoloAir spring kits can be converted down with All-Travel spacer kit
Totem and Lyrik Dual-Position air spring kits can be used to replace older 2-Step assemblies
Lyrik 170mm SoloAir spring is not compatible with 2007-10 Lyrik 160mm SoloAir forks