The Surly Troll Complete Bike is a touring bike built to handle dirt, dirt and more dirt. This bike thrives on long rides over messy terrain. Compatible with both disc and rim brakes, it has a horizontal dropout design that gives riders an edge of confidence. It's also packed to the brim with accessory mounts so your long rides Aren't lacking in gear. We Highly doubt anyone will put up a fight against this Troll. Features of the Surly Troll Complete Bike Surly 4130 chromoly steel, main triangle double-butted TIG-welded,Horizontal slotted with derailleur hanger, Gnot-Boost spacing allows the use of 135mm QR hub, 142 x 12mm thru-axle or 148 x 12mm Boost hubs. Features Rohloff torque arm slot and threaded eyelets for fenders, racks and Surly trailer mounts Full-length Surly Trip Guide housing line guides for derailleurs and brakes; two sets of bottle cage mounts; removable post cantilever pivots; Upper seatstay threaded barrels, mid- and low-blade fully threaded through-blade fork eyelets; threaded holes for racks, fenders and trailer mounting nuts; Rohloff OEM2 axle plate mounting slot Disc and rim brake compatible. Disc mounts Are 51mm IS Rim brake pivots Are removable. Note: rear disc brake is limited to 160mm maximum rotor diameter and requires the use of Surly caliper adaptor (included with frames and bikes) Frame is ED Coated for increased life expectancy Tire clearance for 26 x 3in. Mfg Size: Large Fork Type: Rigid Brake Type: Disc TT (Effective): 615 Rear Axle: QR x 135mm Color: Salt Shaker Brake Type: Rim Frame Material: Steel Frame Type: Rigid Fork Material: Steel Wheel Size: 26in. Defined Color: White Front Axle: QR x 100mm