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| Image |  |  | - | - |
|---|---|---|---|---|
| Product | AUTHOR Spirit 29 ASL 2020 | Spirit 29 2023-24 | - | - |
| Code | UA#42924302 | UA#42945902 | - | - |
| Model card | link | link | - | - |
| Size | 16", 18" | 17", 19", 21" | - | - |
| Frame | hydroformed alloy 6061 29" (ASL) | hydroformed alloy 6061 29" | - | - |
| Front fork | RST Aerial 29 TnL air lock out (100 mm) | RST Aerial 29 TRL air, remote lock out (100 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 MT210-2, 36-22 teeth, 170 / 175 mm cranks | - | - |
| BBParts | SHIMANO ES300 Octalink cartridge | SHIMANO BB-MT500, BB unit | - | - |
| Rear derailleur | SHIMANO Alivio | SHIMANO Alivio | - | - |
| Shifters | SHIMANO Alivio (27) | SHIMANO Alivio (18) | - | - |
| Free wheel | SHIMANO HG400-9 11-34 (9) | SHIMANO HG400-9, 11-36 (9) | - | - |
| Chain | KMC Z9 | KMC Z9 | - | - |
| Hubs | QUANDO Disc 32 holes | QUANDO Disc, 32 holes | - | - |
| Brakes | TEKTRO Auriga disc hydraulic (7" rotors) | TEKTRO HD-M280, disc hydraulic (7" rotors) | - | - |
| Brakes levers | TEKTRO Auriga WS | TEKTRO HD-M280 | - | - |
| Rims | AUTHOR Xenon Pro 29 32 holes | AUTHOR Xenon TRC 29, 32 holes | - | - |
| Spokes | hi-ten black | black steel | - | - |
| Tires | AUTHOR Speed Master 29" x 2.00" | VITTORIA Barzo 29" × 2.10" | - | - |
| Pedals | AUTHOR alloy | AUTHOR alloy | - | - |
| Handlebar | AUTHOR Flatbar 9° 680 / 700 mm | AUTHOR Flatbar, 9°, 700 / 720 mm | - | - |
| Grips | AUTHOR GripLock foam | AUTHOR Pro Lock | - | - |
| Stem | AUTHOR alloy | AUTHOR alloy | - | - |
| Seat post | AUTHOR alloy (31.6) | AUTHOR alloy (31.6) | - | - |
| Seat clamp | AUTHOR (34.9) | AUTHOR (34.9) | - | - |
| Saddle | AUTHOR Fenix | AUTHOR Navigator | - | - |
| Speed | 27 | 18 | - | - |
| Weight | 14 kg /16" | 14,2 kg / 19" | - | - |
| Front derailleur | - | SHIMANO Alivio (34.9) | - | - |
