SHIMANO 105 reinvigorates road cycling with its completely refreshed interface and premium 12-speed mechanical shifting. The ergonomic Dual-Control Levers accommodate a wide range of hand sizes, while the drivetrain's sub-1:1 gear ratio provides excellent climbing options. SHIMANO 105 12SPEED MECHANICAL Components: Shifters & Derailleurs: 2x, 12-speed (mechanical) Brakes: disc, hydraulic (flat mount) Crank: 165.0 mm, 170.0 mm, 172.5 mm, 175.0 mm (34-50 or 36-52) Cassette: 11-34T Front Derailleur: braze-on Rear Derailleur: long cage Chain: 116 links Compatibility: Conventional Shimano Road freehubs (8-/9-/10-/11-/12-speed) Shimano Road 12-speed freehubs Features: mechanical-hydraulic 105 12-speed groupset for road bike use (crank, cassette, chain, front derailleur, rear derailleur, brakes) pure, uncomplicated mechanical shifting independent of battery charge levels premium technology for permanently reliable, precise and smooth operation large gear range with wide-range cassette (11-34 t) light and efficient Hollowtech II crank (34-50 t) with hollow crank arms revised lever ergonomics for better accessibility safe, well controllable braking performance thanks to disc brakes front derailleur with integrated tension adjuster rear derailleur with flat Shadow design chain with 116 links Contents: Shimano 105 R7100 2x12 groupset, consisting of: 1 x Shimano 105 crankset (FC-R7100) 1 x Shimano 105 rear derailleur (RD-R7100) 1 x Shimano 105 front derailleur braze-on fitting. (FD-R7100) 1 x Shimano 105 cassette 11-34 (CS-R7100) 1 x KMC X12 Quick-Link chain 1 x pair Shimano 105 disc brakes (BR-R7170 + ST-R7120), front and rear 1 x Shimano SM-BH90-JK-SSR brake hose, 1000 mm (front) 1 x Shimano SM-BH90-JK-SSR brake hose, 1700 mm (rear) 2 x pairs Shimano resin brake pads with cooling fins 1 x disc brake adapter for front 140/160 + 160/180 mm (no rear adapter) 2 x hose connection sets 2 x type A caliper bolts for front wheel 2 x caliper bolts for 25 mm frame diameters, rear 2 x shifter cable 2 x gear cable housing for front / rear 1 x Shimano OT-RS900 cable housing for the rear derailleur 1 x long nose end cap for OT-RS900 brake set ready for assembly, filled, bleeding is recommended after assembly PLEASE NOTE, THIS GROUPSET DOES NOT CONTAIN: Bottom Bracket Rotors