Models · Author · Aura

Author Aura XR (2026)

gravel · aluminium · sizes 500–580 · tyres up to 45 mm Manufacturer’s website

Geometry ?

Author Aura XR 2026 geometry in sizes 500–580: stack 572–638 mm, reach 371–409 mm, head angle 70.5–72°.

	500	520	540	560	580
Stack	572 mm	588 mm	601 mm	617 mm	638 mm
Reach	371 mm	381 mm	392 mm	402 mm	409 mm
Head angle	70.5°	71°	71°	71.5°	72°
Seat angle	74.5°	74°	73.5°	73°	72.5°
Seat tube (c-t)	500 mm	520 mm	540 mm	560 mm	580 mm
Head tube	135 mm	150 mm	165 mm	180 mm	200 mm
Top tube (effective)	530 mm	550 mm	570 mm	590 mm	610 mm
BB drop	70 mm	70 mm	69 mm	68 mm	68 mm
Chainstay	435 mm	435 mm	435 mm	435 mm	435 mm
Wheelbase	1026 mm	1037 mm	1052 mm	1062 mm	1071 mm
Fork length	408 mm	408 mm	408 mm	408 mm	408 mm
Fork offset	45 mm	45 mm	45 mm	45 mm	45 mm

Source: cz.author.eu, checked 1 Nov 2026 · bar position: worked out from published data

Stock build

Aura XR7 2026

Groupset: Shimano GRX 1×12 mechanical (GRX 822 RD, 42T, 10-45)
Shifters: Shimano GRX 610
Cranks: SHIMANO GRX 820-1 42T, 172.5/175 mm
Stem: RITCHEY Comp 4-Axis
Handlebar: RITCHEY Road ErgoMax Comp, 420/440/460 mm
Seatpost: RITCHEY 2B Comp 27.2
Saddle: PROLOGO Scratch M5 Space AGX T2.0

Aura XR6 2026

Groupset: Shimano GRX 2×12 mechanical (GRX 610-2 46-30, GRX 820 FD/RD, 11-36)
Shifters: Shimano GRX 610
Cranks: SHIMANO GRX 610-2 46-30, 172.5/175 mm
Stem: RITCHEY Comp 4-Axis
Handlebar: RITCHEY Road ErgoMax Comp, 420/440/460 mm
Seatpost: RITCHEY 2B Comp 27.2
Saddle: PROLOGO Scratch M5 Space AGX T2.0

Aura XR5 2026

Groupset: Shimano GRX 1×12 mechanical (GRX 822 RD, 42T, 10-45)
Shifters: Shimano GRX 610
Cranks: SHIMANO GRX 820-1 42T, 172.5/175 mm
Stem: AUTHOR alloy
Handlebar: PROMAX, 420/440/460 mm
Seatpost: AUTHOR alloy 27.2
Saddle: AUTHOR Guru CR

Aura XR4 2026

Groupset: Shimano CUES U6000 2×10 (46-32, 11-39)
Shifters: Shimano CUES 6030
Cranks: SHIMANO Cues 6040-2 46-32, 172.5/175 mm
Stem: AUTHOR alloy
Handlebar: PROMAX, 420/440/460 mm
Seatpost: AUTHOR alloy 27.2
Saddle: AUTHOR Guru

Source for all builds: cz.author.eu, checked 1 Nov 2026

Frames with similar geometry

Stack and reach within 12 mm of size 540 (stack 601 / reach 392 mm).

Hongfu FM188 Internal (2026)size L · stack 602 / reach 392 mm TSW TG01 (2026)size 590 · stack 602 / reach 392 mm Megamo Jakar (2027)size L · stack 600 / reach 392 mm Salsa Stormchaser (2024)size 57.5 · stack 600 / reach 392 mm Giant Revolt (2026)size ML · stack 602 / reach 391 mm Giant Revolt Advanced (2027)size ML · stack 602 / reach 391 mm

Spotted a mistake or a missing build? Let me know.

Are you the manufacturer, or do you sell this bike? I’m missing 12 values for this model’s stem and bars. Add them