Specification: frame KELLYS Alutec RRC 27.5 – Race Ready Concept frame sizes 395mm (15.5″) / 445mm (17.5″) / 495mm (19.5″) / 545mm (21.5″) fork SR SUNTOUR XCT HLO, 27.5″, 100mm, coil / Speed ​​Lockout semi-integrated headsets cartridge support (122mm) cranks SR SUNTOUR XCC (42x32x22) – length 170mm (15.5″ – 17.5″) 175mm (19.5″ – 21.5″) SHIMANO SL-M310 Rapidfire Plus shifters front derailleur SHIMANO Tourney TY700 (31.8mm) rear derailleur SHIMANO Altus M370 (direct mount) number of gears 24 cassette SHIMANO CS-HG200-8 (12-32) chain KMC Z7 (108 links) TEKTRO Hydraulic Disc brakes brake discs 160mm front / 160mm rear TEKTRO brake levers KLS Firework Disc hubs (32 holes) KLS Draft Disc 584×19 32 holes rims U.C.P spokes steel tires KLS Attack 54-584 /27.5×2.10/ stem PROMAX – diam 28.6mm / bar bore 31.8mm / 8° / length 75mm (15.5″,17.5″,19.5″), 90mm (21.5″) PROMAX handlebar – diameter 31.8mm / width 620mm (15.5″), 660mm – (17.5″), 680mm (19.5″ – 21.5″) KLS Advancer 2Density shanks seatpost PROMAX – diam 27.2mm / length 350mm (15.5″ – 17.5″), 400mm (19.5″ – 21.5″) KLS DriveLine fifth wheel KLS alloy pedals