Author road bike 55 Aura is built on an alloy frame with triple butted tubes and carbon fork. One of the highest roads in offers apart from highly developed structural frame´s elements a very rich components set as the twenty two-speed component set Shimano 105, compact chain wheel, wheel set MAVIC Aksium Elite, kevlar tires or carbon seatpost. Road machine for demanding riders.Add to comparewhere to buyother modelsCharisma 77 2020-21Charisma 66 2020-21Charisma 55 2020-21Aura 55 2020-21Interested in other model`s year?20142015201620172018201920202021technical specificationgeometry and sizesphotogalleryproduct options Technical specificationSize480, 500, 520, 540, 560, 580 mmFrametriple butted alloy 6061Front forkAUTHOR C carbon 1.5" taperedHead partsPRESTINE Integrated 1.5" taperedChain WheelFSA Gossamer Compact MegaExo 50-34 teeth 170 / 172.5 / 175 mm cranksBBPartsFSA MegaExoFront derailleurSHIMANO 105 (31.8)Rear derailleurSHIMANO 105ShiftersSHIMANO 105 (22)Free wheelSHIMANO CS-5800 11-28 (11)ChainSHIMANO HG600HubsMAVIC Aksium Elite wheel set 20 / 20 holesBrakesTEKTRO R540Brakes leversSHIMANO 105Wheel setMAVIC Aksium Elite 20 / 20 holesSpokesMAVICTiresVITTORIA Zaffiro Pro kevlar 700 x 25cHandlebarRITCHEY Streem II Comp Road 420 / 440 mmTapesAUTHOR microfiber / gelStemRITCHEY Comp 4-AxisSeat postRITCHEY Comp Carbon (27.2)Seat clampAUTHOR (31.8)SaddleAUTHOR Aura CRSpeed22Weight8.4 kg / 54cm Geometry and sizes Size 480 500 520 540 560 580Min. figure [cm] 154 160 168 176 186 193Max. figure [cm] 162 170 178 188 195 202S/T c-t [mm] 480 500 520 540 560 580S/T c-c [mm] 440 460 480 500 520 540T/T h [mm] 525 532 542 556 570 583T/T a [mm] 512 519 529 543 556 570H/T [mm] 125 140 155 170 185 200C/S [mm] 420 420 420 420 420 420W/B [mm] 993 995 1000 1008 1016 1024S/T ang. [°] 74.5 74.2 74 73.7 73.3 73H/T ang. [°] 71.5 71.8 72.2 72.5 72.8 73F/L [mm] 370 370 370 370 370 370B/B drop [mm] 72 71 70 70 69 68B/B width [mm] 68 68 68 68 68 68Reach [mm] 0 0 0 0 0 0Stack [mm] 0 0 0 0 0 0F/R [mm] 45 45 45 45 45 45Handlebars [mm] 0 0 0 0 0 0Stem [mm] 0 0 0 0 0 0Cranks [mm] 0 0 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 Used technologiesWheel set Photogallery Product options black / green48 = UA#42869101 50 = UA#42869102 52 = UA#42869103 54 = UA#42869104 56 = UA#42869105 58 = UA#42869106