The tubeless-compatible Afterburner WideR MTB 27.5 wheels are an ideal upgrade for fast mountain bikes and the six-bolt hubs take modern disc brake systems. At 27mm wide and 25mm deep, this new asymmetric aluminum rim is wider and very strong. Black anodizing gives a tough finish and alongside black spokes and black brass nipples lends the Afterburners a mean and stealthy look. They're just 1,640 grams a pair. The front hub takes 9mm QR or 15mm thru-axles, and holds 24 straight-pull spokes in a two-cross pattern. The 24-spoke rear hub boasts a 6-pawl aluminum freehub for instant engagement and runs on a double row of stainless steel bearings. It's available for Shimano 9-11 speed or SRAM 11-speed, and compatible with 135mm QR and 142mm thru-axles. Also included are alloy QR axles, sealant tape and tubeless valves. 27.5 hookless bead rims Asymmetric 25mm deep x 27mm Wide alloy clincher rim Tubeless compatibleAlloy P.R.A. hubs with DP spokes Shimano 9-11sp. Afterburner WideR 27.5 MTB TA Wheelset, 27.5x24H Shimano. Anod. Black w/TA 6-bolt rotor compatibility 6-cartridge bearings 1,640 grams / pair