Burgtec Replacement Trek Axles. Features: Clean, tough, and simple Tighten up with a 6mm Allen key. Features a 6mm Allen key on the drive side of the axle if you manage to round the non drive side Constructed from 7075 aluminum and made to manufacturer's exact specifications Fits: MY22/23 Top Fuel, MY22/23 Fuel EX Gen 6, MY22/23 Fuel EX Gen 5, MY22/23 Slash, MY22/23 Fuel Exe, MY22/23 Rail Gen 2, MY22/23 Rail Gen 3, MY22/23 Rail Gen 4 Specs: Model:Trek 194 Description:12x194mm Rear Axle Axle Length Mm:194 Thread Pitch:M12x1.0 Color:Purple Rain