The Karate Monkey Front Suspension bike features a Rock Shox 35 Gold RL A2 suspension fork with 140mm travel, and it’s paired with a dropper post out the box. Progressive trail geometry and Surly’s Gnot-Boost rear dropout system deliver a versatile bike with the ability to swap hubs and wheel sizes. If you want to round-house kick some trail right in the face, the Karate Monkey is your sled.- 100% Surly Chromoly steel frame, double-butted main triangle and 44mm headtube- The tubeset uses Surly custom trumpet tubes for greater stiffness and durability- Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142 and 148 x 12mm thru, as well as 135mm w/ 10/12 washer- RockShox 35 Gold RL A2 suspension fork with 140mm travel- TranzX YSP15 dropper post with stealth routing; 100mm travel on XS, 120mm travel on SM–XL Frame Surly Karate Monkey, 4130 Chromoly, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, ED coated Fork RockShox 35 Gold RL, 15 x 110mm, 140mm travel Rims WTB ST i35 TCS 2.0 27.5" Hubs Front: Novatec 15x110mm, 32h Rear: Novatec 12x148mm, 32h Spokes 14G Black Tires Surly Dirt Wizard 27.5 x 2.8", 60tpi, Tubeless Ready Bottom Bracket Shimano MT501, BSA Crankset Shimano MT511, 30T Shifters Shimano Deore XT M8100 Rear Derailleur Shimano M8100 XT SGS Cassette/Freewheel SunRace CSMZ800, 11-51t, 12spd Chain KMC X12 Anti-Rust Brakes Tektro HD-M3520, 2 Piston Rotors Tektro 180/160, 6-Bolt Brake Levers Tektro HD-M3520 Handlebars Salsa Rustler Tape/Grips Velo Black Stem Promax DA-296, 31.8mm Headset Cane Creek Seatpost TranzX YSP15, 30.9 Travel XS: 100mm, SM-XL: 120mm Saddle WTB Volt Medium Pedals Sold Separately