Top Specs. Fantastic 29" boost thru axle MTB Wheelset built on WTB ST i30 rims. WTB ST i30 rim, 30mm inner rim width. 'High End' Boost Thru Axle wheelset. HG freehub – Compatible with HG-standard 8–12 speed MTB cassettes, including Shimano and SRAM HG-type cassettes.
