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| Image |  |  | - | - |
|---|---|---|---|---|
| Product | Elevation 27,5 ASL 2025 | AUTHOR Aura 44 Disc 2017 | - | - |
| Code | UA#42961002 | UA#42880901 | - | - |
| Model card | link | link | - | - |
| Size | 17", 19" | 480, 500, 520, 540, 560, 580 mm | - | - |
| Frame | double butted hydroformed alloy 6061 27.5" (integrated battery) | triple butted alloy 6061 | - | - |
| Front fork | RST F1RST 110-15 Air, air, lock out, 15 mm thru axle boost, 1.5" tapered steerer (120 mm) | AUTHOR alloy 1.5" tapered | - | - |
| Engine | SHIMANO Steps EP-600, 250 W | - | - | - |
| Battery | SHIMANO EN806 Li-Ion, 36 V, 17,5 Ah, 630 Wh | - | - | - |
| Display | SHIMANO Steps EN610, LCD | - | - | - |
| Head parts | PRESTINE Integrated 1.5" tapered | PRESTINE Integrated 1.5" tapered | - | - |
| Chain Wheel | SHIMANO Steps EN-600, 38 teeth, 170 / 175 mm cranks | SHIMANO Tiagra Compact 50-34 teeth 170 / 172.5 / 175 mm cranks | - | - |
| BBParts | SHIMANO Steps | SHIMANO BB-RS500 BB unit | - | - |
| Rear derailleur | SHIMANO Cues 6000 | SHIMANO Tiagra | - | - |
| Shifters | SHIMANO Cues 6000 (11) | SHIMANO Tigrra (20) | - | - |
| Free wheel | SHIMANO CS-LG400-11, 11-50 (11) | SHIMANO HG500-10 11-32 (10) | - | - |
| Chain | KMC eGlide | KMC X10 | - | - |
| Hubs | QUANDO, 15 × 110 mm thru front axle, 12 × 148 mm thru rear axle, 32 holes | QUANDO Road Disc 32 holes | - | - |
| Brakes | TRP Slate EVO, 4-piston disc hydraulic (7" rotors) | TRP Spyre disc mechanical (160 mm rotors) | - | - |
| Brakes levers | TRP Slate EVO | SHIMANO Tiagra | - | - |
| Rims | AUTHOR E-Krypton 27.5, 32 holes | JALCO CR 25 32 holes | - | - |
| Spokes | black stainless steel 2.2 mm | black stainless steel 2.0 mm | - | - |
| Tires | VITTORIA Barzo G2.0 aramid 27.5" × 2.25" | VITTORIA Zaffiro Pro kevlar 700 x 28c | - | - |
| Pedals | HT platform | - | - | - |
| Handlebar | AUTHOR, 15 mm, 700 / 720 mm | AUTHOR 440 / 460 mm | - | - |
| Grips | AUTHOR high density foam | - | - | - |
| Stem | AUTHOR alloy | AUTHOR | - | - |
| Seat post | AUTHOR alloy (30.9) | AUTHOR (27.2) | - | - |
| Seat clamp | AUTHOR (34.9) | AUTHOR (31.8) | - | - |
| Saddle | AUTHOR E-Donna | AUTHOR Aura CR | - | - |
| Speed | 11 | 20 | - | - |
| Weight | 23,4 kg / 17" | 9,9 kg / 54 cm | - | - |
| Front derailleur | - | SHIMANO Tiagra (31.8) | - | - |
| Grips/Bar tapes | - | AUTHOR suede / gel | - | - |
