Are you looking for the perfect machine for your talented racer, or do you just want the best in its category? Author Ultrasonic 24 on a very light triple butted frame with so-called hydroforming technology, which guarantees perfect strength, durability and significant weight savings. Performance-oriented racing geometry, lightweight alloy fork, KENDA Kevlar tires and SHIMANO Alivio components.Add to comparewhere to buyadditional accessoriesother modelsMirage 24 2021-22Ultrasonic 24 2021-22A-Matrix 24 2021-22A-Matrix 24 SL 2021-22Limit 24 2021-22Ultima 24 2021-22Matrix 24 2021-22more modelsInterested in other model`s year?2018201920202021-22technical specificationgeometry and sizesphotogalleryproduct optionsadditional accessories Technical specificationSize12"Frametriple butted hydroformed alloy 6061 24"Front forkalloy 6061 24"Head partsAUTHOR Integrated 1.5" taperedChain WheelLASCO 32 teeth 150 mm cranksBBPartsVP COMP cartridgeRear derailleurSHIMANO AlivioShiftersSHIMANO Alivio (9)Free wheelSHIMANO HG400-9 11-36 (9)ChainKMC Z9HubsQUANDO 24 holesBrakesTEKTRO VBrakes leversTEKTRO alloyRimsalloy 24 holesSpokesblack stainless steel 2.0 mmTiresKENDA Small Block Eight aramid 24" × 1.95"PedalsalloyHandlebarAUTHOR Flat Top bar 0 mm 600 mmGripsAUTHOR kratton rubberStemAUTHOR alloySeat postAUTHOR alloy (31.6)Seat clampAUTHOR (34.9)SaddleAUTHOR ChampionSpeed9Weight9,8 kg / 12" Geometry and sizes Size 12"Min. figure [cm] 125Max. figure [cm] 140S/T c-t [mm] 305S/T c-c [mm] 0T/T h [mm] 500T/T a [mm] 482H/T [mm] 110C/S [mm] 400W/B [mm] 965S/T ang. [°] 73H/T ang. [°] 70F/L [mm] 372B/B drop [mm] 25B/B width [mm] 68Reach [mm] 0Stack [mm] 0F/R [mm] 45Handlebars [mm] 0Stem [mm] 0Cranks [mm] 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 blue-matt / lime12" = UA#42932801 additional accessoriesAUTHOR Bottle cage ABC-37Bottle cage, Light AL 6061T bottle cage, strong construction with universal mount, bottle removing from side direction - for low space in frame ...AUTHOR Stand AKS-500 RKick Stand Author for rear fork fixation. Adjustable for wheel diameter 24"-29". Material AL6061-T6. Weight 379g. AUTHOR Stand AKS-530 RSAlloy kick stand designed for direct rear fork down tube fixation (tube profile 22 - 25mm), recomended for bicycles with rear disk brake. Adjustable ...AUTHOR Saddle bag A-S381 TPN X7The Author saddle bag A-S381 is the easy bag with the one main compartment. Designed for long satisfied use, main parts from waterproofed fabric ...AUTHOR Sadle bag A-S381 QF9 X7The Author saddle bag A-S381 is the easy bag with the Quick Fix 9 bracket for easy click ON/OFF and one main compartment. Designed for long satisfied ...
AUTHOR Bottle cage ABC-37Bottle cage, Light AL 6061T bottle cage, strong construction with universal mount, bottle removing from side direction - for low space in frame ...AUTHOR Stand AKS-500 RKick Stand Author for rear fork fixation. Adjustable for wheel diameter 24"-29". Material AL6061-T6. Weight 379g. AUTHOR Stand AKS-530 RSAlloy kick stand designed for direct rear fork down tube fixation (tube profile 22 - 25mm), recomended for bicycles with rear disk brake. Adjustable ...AUTHOR Saddle bag A-S381 TPN X7The Author saddle bag A-S381 is the easy bag with the one main compartment. Designed for long satisfied use, main parts from waterproofed fabric ...AUTHOR Sadle bag A-S381 QF9 X7The Author saddle bag A-S381 is the easy bag with the Quick Fix 9 bracket for easy click ON/OFF and one main compartment. Designed for long satisfied ...