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.