AUTHOR Aura XR4 2021 - alloy hydroformed triple butted frame, carbon fork

AUTHOR Aura XR4 2021Alloy hydroformed triple butted frame, carbon fork  |  SHIMANO GRX 400/TIAGRA, 20 speed, compact chainwheel  |  PANARACER GRAVEL KING SK SPORT foldable tires

AUTHOR Aura XR4 2021
Interested in other model`s year?
201920202021

Technical specification

Size500, 520, 540, 560, 580 mm
Frametriple butted alloy 6061
Front forkAUTHOR carbon legs, alloy steerer 1.5" tapered
Head partsPRESTINE Integrated 1.5" tapered
Chain WheelSHIMANO GRX 600 46-30 teeth 172.5 / 175 mm cranks
BBPartsSHIMANO BB-RS500 BB unit
Front derailleurSHIMANO GRX 400
Rear derailleurSHIMANO Tiagra (20)
ShiftersSHIMANO GRX 400 (20)
Free wheelSHIMANO HG500-10 11-34 (10)
ChainKMC X10
HubsQUANDO Road Disc 12 × 100 mm thru front axle 32 holes
BrakesSHIMANO RS305 kotoučové mechanické (160 mm kotouče)
Brakes leversSHIMANO Tiagra
RimsJALCO SRD 21 32 holes
Spokesblack stainless steel 2.0 mm
TiresPANARACER Gravel King SK Sport 700 × 38c
HandlebarPROMAX 420 / 440 / 460 mm
TapesAUTHOR suede / gel
StemAUTHOR
Seat postAUTHOR (27.2)
Seat clampAUTHOR (31.8)
SaddleAUTHOR Guru
Speed20
Weight10,8 kg / 54 cm

Geometry and sizes

Size 480 500 520 540 560 580
Min. figure [cm] 152 160 168 176 186 190
Max. figure [cm] 162 170 178 185 193 205
S/T c-t [mm] 480 500 520 540 560 580
S/T c-c [mm] 440 460 480 500 520 540
T/T h [mm] 515 530 545 560 580 595
T/T a [mm] 502 518 532 546 563 576
H/T [mm] 100 120 140 160 180 200
C/S [mm] 425 425 425 425 425 425
W/B [mm] 1002 1014 1020 1031 1042 1046
S/T ang. [°] 75 74.5 74 73.5 73 72.5
H/T ang. [°] 70.5 70.5 71 71 71.5 72
F/L [mm] 400 400 400 400 400 400
B/B drop [mm] 71 70 70 69 68 68
B/B width [mm] 0 0 0 0 0 0
Reach [mm] 373 378 382 386 395 397
Stack [mm] 530 548 568 586 606 627
F/R [mm] 45 45 45 45 45 45
Handlebars [mm] 0 0 0 0 0 0
Stem [mm] 0 0 0 0 0 0
Cranks [mm] 0 0 0 0 0 0
max min
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AUTHOR Aura XR4 2021

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

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