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| Image |  |  |  |  |
|---|---|---|---|---|
| Product | Aura XR2 2025 | Frame+Fork Guru 3.0 2025 | AUTHOR CLASSIC 2008 | AUTHOR Bicycle Egoist 2011 |
| Code | UA#4296190226 | UA#05962622 | UA#42742701 | UA#42785001 |
| Model card | link | link | link | link |
| Size | 500, 520, 540, 560, 580 mm | - | 16", 18", 20", 22" | 16", 17.5", 19", 20.5", 22" |
| Frame | triple butted alloy 6061, max tyre size 700 × 42C | - | alloy 7005 700C | triple butted alloy 6069 26" |
| Front fork | AUTHOR alloy, 1.5" tapered | - | RST Sofi T8 (50 mm) | FOX F100RL OB air, lock out 15 mm thru axle 1.5" taper steerer (100 mm) |
| Head parts | PRESTINE Integrated, 1.5" tapered | - | VP Comp. 1-1/8" | FSA Orbit C-40 1.5" taper |
| Chain Wheel | PROWHEEL RPL, 48-32 teeth, 172,5 / 175 mm cranks | - | SUNTOUR XCT-308 48-38-28 170 / 175 mm cranks | SHIMANO XT-10 42-32-24 170 / 175 mm cranks |
| BBParts | SHIMANO BB-UN300, cartridge | - | VP Comp. cartridge | SHIMANO XT-10 BB unit |
| Front derailleur | SHIMANO Sora | - | SHIMANO C050 (31.8) | SHIMANO XT (34.9) |
| Rear derailleur | SHIMANO Sora | - | SHIMANO Acera | SHIMANO XT |
| Shifters | SHIMANO Sora (18) | - | SHIMANO Acera (24) | SHIMANO XT (30) |
| Free wheel | SHIMANOCS- HG400-9, 11-32 (9) | - | SHIMANO HG-30-8I 11-32 | SHIMANO M771-10 11-36 (10) |
| Chain | SHIMANO HG53 | - | SHIMANO HG-40 | SHIMANO HG-74 |
| Hubs | QUANDO Road Disc, 12 × 100 mm thru front axle, 32 holes | - | QUANDO 32 holes | SHIMANO XT disc 15 mm thru axle 32 holes |
| Brakes | SHIMANO BR-UR300, disc hydraulic (160 mm rotors) | - | TEKTRO 57AL | SHIMANO XT disc hydraulic (6" rotors) |
| Brakes levers | SHIMANO BL-MT201 | - | SHIMANO Acera | SHIMANO XT |
| Rims | JALCO SRD 21, 32 holes | - | JALCO ATB 220 doublewall 32 holes | AUTHOR Helium Pro 32 holes |
| Spokes | black stainless steel 2.0 mm | - | steel | black stainless steel 2.2 mm triple butted |
| Tires | PANARACER Gravel King SK Sport, 700 × 38C (40-622), max tyre size 700 × 42C | - | AUTHOR AT-1338 700 x 35c | GEAX Barro Race Kevlar 26" x 2.00" |
| Handlebar | AUTHOR rise 15 mm 9° 660 / 680 mm | - | KALIN steel | RITCHEY Pro 31.8 mm |
| Grips/Bar tapes | AUTHOR Microtech ErgoGrip | - | - | - |
| Stem | AUTHOR alloy | - | ZOOM alloy adjustable | RITCHEY WCS |
| Seat post | AUTHOR alloy (27.2) | - | ZOOM alloy (27.2) | RITCHEY Pro carbon (31.6) |
| Seat clamp | AUTHOR (31.8) | - | AUTHOR (31.8) | AUTHOR (34.9) |
| Saddle | AUTHOR Guru | - | AUTHOR Mega Top Eco | FIZIK Tundra II |
| Speed | 18 | - | 24 | 30 |
| Weight | 10,9 kg / 54 cm | - | 13.70kg/ 20" | 10.8 kg / 19" |
| Pedals | - | - | AUTHOR alloy / plastic | SHIMANO M540 clipless |
| Grips | - | - | AUTHOR ErgoGrip | AUTHOR GripLock |
