Mountain bike Author TRACTION on double butted hydroformed alloy frame and air, RST Aerial fork with lock out unit.Add to comparewhere to buyother modelsInstinct 27,5 ASLUltrasonic 27,5Traction 27,5 2021Traction 27,5 ASLSonic 27,5 2021Spirit 27,5 ASLPegas 27,5 2021more modelsInterested in other model`s year?20142015201620172018201920202021technical specificationgeometry and sizesphotogalleryproduct options Technical specificationSize15", 17", 19", 21"Framedouble butted alloy 6061 27.5" - hydroformingFront forkRST Aerial 27.5 TnL air, lock out (100 mm)Head partsAUTHOR Integrated 1.5" taperedChain WheelSHIMANO Alivio 40-30-22 teeth 170 / 175 mm cranksBBPartsSHIMANO Alivio BB unitFront derailleurSHIMANO Alivio (34.9)Rear derailleurSHIMANO DeoreShiftersSHIMANO Alivio (27)Free wheelSHIMANO HG400-9 11-34 (9)ChainSHIMANO HG-53HubsAUTHOR Xenon Disc 32 holesBrakesTEKTRO Gemini disc hydraulic (6" rotors)Brakes leversTEKTRO GeminiRimsAUTHOR Radon Pro 27.5 32 holesSpokesblack stainless steel 2.0 mmTiresVITTORIA Mezcal 27.5" x 2.10"PedalsAUTHOR alloyHandlebarAUTHOR 15 mm 660 / 680 mmGripsAUTHOR Pro LockStemAUTHOR alloySeat postAUTHOR alloy (31.6)Seat clampAUTHOR (34.9)SaddleAUTHOR NavigatorSpeed27Weight13.4 kg / 19" Geometry and sizes Size 15" 17" 19" 21"Min. figure [cm] 148 158 169 182Max. figure [cm] 162 172 184 195S/T c-t [mm] 381 432 483 533S/T c-c [mm] 0 0 0 0T/T h [mm] 570 585 600 615T/T a [mm] 555 563 575 590H/T [mm] 110 117 125 132C/S [mm] 425 425 425 425W/B [mm] 1060 1075 1091 1100S/T ang. [°] 73 73 73 72.5H/T ang. [°] 70 70 70 70F/L [mm] 495 495 495 495B/B drop [mm] 40 40 40 40B/B width [mm] 73 73 73 73Reach [mm] 0 0 0 0Stack [mm] 0 0 0 0F/R [mm] 44 44 44 44Handlebars [mm] 0 0 0 0Stem [mm] 0 0 0 0Cranks [mm] 0 0 0 0 max min The recommended size and stature are just indicative. It is recommended to always consult your choice with the dealer. S/T c-t - seat tube (center-top), length of the seat tube from the middle of BB parts to its peak S/T c-c - seat tube (center-center), length of the seat tube from the middle of BB parts to an axle of the upper tube T/T h - top tube horizontal, horizontal lenght of the upper tube T/T a - top tube actual, real lenght of the upper tube H/T - head tube, head tube lenght C/S - chain stay, chain brace lenght W/B - wheel base, wheelbase (front and rear axle lenght) S/T ang. - seat tube angel, angle between the seat tube axis and an imaginary line connecting the axes of the front and rear wheel H/T ang. - head tube angel, angle between the head tube axis and an imaginary line connecting axes of the front and rear wheels F/L - fork length, fork length from the head parts bottom to the middle of the front wheel B/B drop - bottom bracked drop, lenght between an imaginary line connecting wheels centers and BB parts, measured from BB parts F/R - fork rake, distances between the head tube axis and fork axis measured at center of the front wheel, so-called. off set Photogallery Product options