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| Image |  |  | - | - |
|---|---|---|---|---|
| Product | AUTHOR Spirit 29 ASL 2019 | Elevation 27,5 ASL 2025-26 | - | - |
| Code | UA#42906702 | UA#4296100226 | - | - |
| Model card | link | link | - | - |
| Size | 16", 18" | 17", 19" | - | - |
| Frame | hydroformed alloy 6061 29" (ASL) | double butted hydroformed alloy 6061 27.5" (integrated battery) | - | - |
| Front fork | RST Aerial 29 TnL air, lock out (100 mm) | RST F1RST 110-15 Air, air, lock out, 15 mm thru axle boost, 1.5" tapered steerer (120 mm) | - | - |
| Head parts | AUTHOR Integrated 1.5" tapered | PRESTINE Integrated 1.5" tapered | - | - |
| Chain Wheel | SHIMANO M4000 40-30-22 teeth 170 / 175 mm cranks | SHIMANO Steps EN-600, 38 teeth, 170 / 175 mm cranks | - | - |
| BBParts | SHIMANO ES300 Octalink cartridge | SHIMANO Steps | - | - |
| Rear derailleur | SHIMANO Alivio | SHIMANO Cues 6000 | - | - |
| Shifters | SHIMANO Alivio (27) | SHIMANO Cues 6000 (11) | - | - |
| Free wheel | SHIMANO HG400-9 11-34 (9) | SHIMANO CS-LG400-11, 11-50 (11) | - | - |
| Chain | KMC Z9 | KMC eGlide | - | - |
| Hubs | QUANDO Disc 32 holes | QUANDO, 15 × 110 mm thru front axle, 12 × 148 mm thru rear axle, 32 holes | - | - |
| Brakes | TEKTRO Auriga disc hydraulic (7" rotors) | TRP Slate EVO, 4-piston disc hydraulic (7" rotors) | - | - |
| Brakes levers | TEKTRO Auriga WS | TRP Slate EVO | - | - |
| Rims | AUTHOR Xenon 29 32 holes | AUTHOR E-Krypton 27.5, 32 holes | - | - |
| Spokes | black steel | black stainless steel 2.2 mm | - | - |
| Tires | AUTHOR Speed Master 29" x 2.00" | VITTORIA Barzo G2.0 aramid 27.5" × 2.25" | - | - |
| Pedals | AUTHOR alloy | HT platform | - | - |
| Handlebar | AUTHOR Flatbar 9° 660 / 680 mm | AUTHOR, 15 mm, 700 / 720 mm | - | - |
| Grips | AUTHOR GripLock foam | AUTHOR high density foam | - | - |
| Stem | AUTHOR alloy | AUTHOR alloy | - | - |
| Seat post | AUTHOR alloy (31.6) | AUTHOR alloy (30.9) | - | - |
| Seat clamp | AUTHOR (34.9) | AUTHOR (34.9) | - | - |
| Saddle | AUTHOR Fenix | AUTHOR E-Donna | - | - |
| Speed | 27 | 11 | - | - |
| Weight | 14,1kg / 16" | 23,4 kg / 17" | - | - |
| Engine | - | SHIMANO Steps EP-600, 250 W | - | - |
| Battery | - | SHIMANO EN806 Li-Ion, 36 V, 17,5 Ah, 630 Wh | - | - |
| Display | - | SHIMANO Steps EN610, LCD | - | - |
