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| Image |  |  |  |  |
|---|---|---|---|---|
| Product | Aura XR2 2025 | Frame+Fork Guru 3.0 2025 | AUTHOR Impulse 27,5 2020 | AUTHOR CLASSIC 2008 |
| Code | UA#4296190226 | UA#05962622 | UA#42922802 | UA#42742701 |
| Model card | link | link | link | link |
| Size | 500, 520, 540, 560, 580 mm | - | 17", 19" | 16", 18", 20", 22" |
| Frame | triple butted alloy 6061, max tyre size 700 × 42C | - | alloy 6061 27.5" | alloy 7005 700C |
| Front fork | AUTHOR alloy, 1.5" tapered | - | RST Gila 27.5 ML lock out (100 mm) | RST Sofi T8 (50 mm) |
| Head parts | PRESTINE Integrated, 1.5" tapered | - | PRESTINE Integrated 1-1/8" | VP Comp. 1-1/8" |
| Chain Wheel | PROWHEEL RPL, 48-32 teeth, 172,5 / 175 mm cranks | - | PROWHEEL 42-34-24 teeth 170 / 175 mm cranks | SUNTOUR XCT-308 48-38-28 170 / 175 mm cranks |
| BBParts | SHIMANO BB-UN300, cartridge | - | VP COMP cartridge | VP Comp. cartridge |
| Front derailleur | SHIMANO Sora | - | SHIMANO TY700 (34.9) | SHIMANO C050 (31.8) |
| Rear derailleur | SHIMANO Sora | - | SHIMANO Altus | SHIMANO Acera |
| Shifters | SHIMANO Sora (18) | - | SHIMANO Altus (24) | SHIMANO Acera (24) |
| Free wheel | SHIMANOCS- HG400-9, 11-32 (9) | - | SHIMANO HG200-8 12-32 (8) | SHIMANO HG-30-8I 11-32 |
| Chain | SHIMANO HG53 | - | KMC Z8.1 | SHIMANO HG-40 |
| Hubs | QUANDO Road Disc, 12 × 100 mm thru front axle, 32 holes | - | QUANDO Disc 32 holes | QUANDO 32 holes |
| Brakes | SHIMANO BR-UR300, disc hydraulic (160 mm rotors) | - | TEKTRO disc hydraulic (6" rotors) | TEKTRO 57AL |
| Brakes levers | SHIMANO BL-MT201 | - | TEKTRO | SHIMANO Acera |
| Rims | JALCO SRD 21, 32 holes | - | AUTHOR Xenon 27.5 32 holes | JALCO ATB 220 doublewall 32 holes |
| Spokes | black stainless steel 2.0 mm | - | hi-ten black | steel |
| Tires | PANARACER Gravel King SK Sport, 700 × 38C (40-622), max tyre size 700 × 42C | - | AUTHOR Rocket 27.5" x 2.10" | AUTHOR AT-1338 700 x 35c |
| Handlebar | AUTHOR rise 15 mm 9° 660 / 680 mm | - | AUTHOR 8° 660 / 680 mm | KALIN steel |
| Grips/Bar tapes | AUTHOR Microtech ErgoGrip | - | - | - |
| Stem | AUTHOR alloy | - | AUTHOR alloy | ZOOM alloy adjustable |
| Seat post | AUTHOR alloy (27.2) | - | AUTHOR alloy (31.6) | ZOOM alloy (27.2) |
| Seat clamp | AUTHOR (31.8) | - | AUTHOR (34.9) | AUTHOR (31.8) |
| Saddle | AUTHOR Guru | - | AUTHOR Courier | AUTHOR Mega Top Eco |
| Speed | 18 | - | 24 | 24 |
| Weight | 10,9 kg / 54 cm | - | 14,2 kg /17" | 13.70kg/ 20" |
| Pedals | - | - | resin | AUTHOR alloy / plastic |
| Grips | - | - | AUTHOR kratton rubber | AUTHOR ErgoGrip |
