AUTHOR Ultrasonic 24 2021-22 - tripple butted alloy frame

AUTHOR Ultrasonic 24 2021-22Tripple butted alloy frame  |  SHIMANO ALIVIO components  |  KENDA kevlar tires

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.
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AUTHOR Ultrasonic 24 2021-22
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Technical specification

Size12"
Frametriple butted hydroformed alloy 6061 24"
Front forkalloy 6061 24"
Head partsAUTHOR Integrated 1.5" tapered
Chain WheelLASCO 32 teeth 150 mm cranks
BBPartsVP COMP cartridge
Rear derailleurSHIMANO Alivio
ShiftersSHIMANO Alivio (9)
Free wheelSHIMANO HG400-9 11-36 (9)
ChainKMC Z9
HubsQUANDO 24 holes
BrakesTEKTRO V
Brakes leversTEKTRO alloy
Rimsalloy 24 holes
Spokesblack stainless steel 2.0 mm
TiresKENDA Small Block Eight aramid 24" × 1.95"
Pedalsalloy
HandlebarAUTHOR Flat Top bar 0 mm 600 mm
GripsAUTHOR kratton rubber
StemAUTHOR alloy
Seat postAUTHOR alloy (31.6)
Seat clampAUTHOR (34.9)
SaddleAUTHOR Champion
Speed9
Weight9,8 kg / 12"

Geometry and sizes

Size 12"
Min. figure [cm] 125
Max. figure [cm] 140
S/T c-t [mm] 305
S/T c-c [mm] 0
T/T h [mm] 500
T/T a [mm] 482
H/T [mm] 110
C/S [mm] 400
W/B [mm] 965
S/T ang. [°] 73
H/T ang. [°] 70
F/L [mm] 372
B/B drop [mm] 25
B/B width [mm] 68
Reach [mm] 0
Stack [mm] 0
F/R [mm] 45
Handlebars [mm] 0
Stem [mm] 0
Cranks [mm] 0
max min
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AUTHOR Ultrasonic 24 2021-22

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

AUTHOR Ultrasonic 24 2021-22

Product options

 blue-matt / lime12" = UA#42932801