I think Sram is going to release a new axle standard. The 20.02mm axle diameter axle will be called BUB.
Unfortunately you have to buy SRAM Hubs as well, because the old (bad) 20.00mm Hubs are way to small and not durable enough for Down-Country usage.
(never had any problems with 15mm Axles. But I think that Fox 36 for 29" could be a bit stiffer.)
Jan. 21, 2019, 12:25 a.m. - MaWa
I think Sram is going to release a new axle standard. The 20.02mm axle diameter axle will be called BUB. Unfortunately you have to buy SRAM Hubs as well, because the old (bad) 20.00mm Hubs are way to small and not durable enough for Down-Country usage. (never had any problems with 15mm Axles. But I think that Fox 36 for 29" could be a bit stiffer.)