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| Image |  |  | - | - |
|---|---|---|---|---|
| Product | AUTHOR Context 29 ASL 2021-22 | AUTHOR Aura XR4 2019 | - | - |
| Code | UA#42936201 | UA#42912402 | - | - |
| Model card | link | link | - | - |
| Size | 16", 18" | 480, 500, 520, 540, 560, 580 mm | - | - |
| Frame | triple butted hydroformed alloy 6061 29" (ASL) | triple butted alloy 6061 | - | - |
| Front fork | RST F1RST 29 15 TRL air, remote lock out (100 mm) | AUTHOR carbon legs, alloy steerer 1.5" tapered | - | - |
| Head parts | FSA Integrated 1.5" tapered | PRESTINE Integrated 1.5" tapered | - | - |
| Chain Wheel | SHIMANO M510-1 32 teeth 170 / 175 mm cranks | SHIMANO Tiagra Compact 50-34 teeth 170 / 172.5 / 175 mm cranks | - | - |
| BBParts | SHIMANO BB-52 BB unit | SHIMANO BB-RS500 BB unit | - | - |
| Rear derailleur | SHIMANO Deore | SHIMANO Tiagra | - | - |
| Shifters | SHIMANO Deore (12) | SHIMANO Tiagra (20) | - | - |
| Free wheel | SHIMANO CS-M6100 10-51 (12) | SHIMANO HG500-10 11-34 (10) | - | - |
| Chain | KMC X12 | KMC X10 | - | - |
| Hubs | AUTHOR Helium 15 / SHIMANO 15 × 100 mm thru front axle 12 × 148 mm thru rear axle 32 holes | QUANDO Road Disc 12 x 100 mm thru front axle 32 holes | - | - |
| Brakes | SHIMANO BR-MT400 disc hydraulic (7" rotors) | REVER MCX2 disc mechanical (160 mm rotors) | - | - |
| Brakes levers | SHIMANO BL MT400 | SHIMANO Tiagra | - | - |
| Rims | AUTHOR Xenon TRC 29 32 holes | JALCO CR25D 32 holes | - | - |
| Spokes | black stainless steel 2.0 mm | black stainless steel 2.0 mm | - | - |
| Tires | VITTORIA Barzo foldable 29" × 2.25" | RITCHEY Cross Shield kevlar 700 x 35c | - | - |
| Handlebar | AUTHOR Flatbar 9° 680 / 700 mm | PROMAX 420 / 440 / 460 mm | - | - |
| Grips | AUTHOR GripLock foam | - | - | - |
| Stem | AUTHOR alloy | AUTHOR | - | - |
| Seat post | AUTHOR alloy (31.6) | AUTHOR (27.2) | - | - |
| Seat clamp | AUTHOR (34.9) | AUTHOR (31.8) | - | - |
| Saddle | AUTHOR Fenix | AUTHOR Aura CR | - | - |
| Speed | 12 | 20 | - | - |
| Weight | 12,2 kg / 16" | 10,4kg / 54" | - | - |
| Front derailleur | - | SHIMANO Tiagra | - | - |
| Grips/Bar tapes | - | AUTHOR suede / gel | - | - |
