Hand-built by experts and highly versatile, the tubeless-compatible Afterburner MTB 29 wheels are an ideal upgrade for fast mountain bikes, cyclocross and even gravel bikes. The six-bolt hubs take modern disc brake systems. At 26.1mm wide and 25mm deep, the asymmetric aluminum rim is near-square and very strong. Black anodising gives a tough finish and alongside black spokes and black brass nipples lends the Afterburners a mean and stealthy look. They're just 1660g 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. Weight 1660g. 24 straight-pull, double-butted spokes per wheel 6-bolt disc mounts 21.5mm inner rims 6-pawl aluminum freehub 9mm QR and 15mm/142 thru-axle compatible Compatible with cyclocross and gravel bikes Shimano or SRAM XD freehub Artisan built by hand Tubeless-compatible alloy rims Stainless steel bearings