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| Image |  |  |  |  |
|---|---|---|---|---|
| Product | Ultrasonic 24 2025 | Context 29 2023-24 | AUTHOR Context 29 ASL 2021-22 | Enigma 2025-26 |
| Code | UA#42954801 | UA#42946802 | UA#42936201 | UA#4296170226 |
| Model card | link | link | link | link |
| Size | 12" | 17", 19", 21" | 16", 18" | 17", 19" |
| Frame | triple butted hydroformed alloy 6061 24" | triple butted hydroformed alloy 6061 29" | triple butted hydroformed alloy 6061 29" (ASL) | double butted hydroformed alloy 6061 29" (9) (integrated battery) |
| Front fork | alloy 6061 24" | RST F1RST 29 15 TRL air, remote lock out (100 mm) | RST F1RST 29 15 TRL air, remote lock out (100 mm) | RST ViV Air TnL, air, lock out 1.5" tapered steerer (80 mm) |
| Head parts | PRESTINE Integrated, 1.5" tapered | PRESTINE Integrated 1.5" tapered | FSA Integrated 1.5" tapered | PRESTINE Integrated 1.5" tapered |
| Chain Wheel | PROWHEEL Boom, 32 teeth, 140 mm cranks | SHIMANO M510-1, 34 teeth, 170 / 175 mm cranks | SHIMANO M510-1 32 teeth 170 / 175 mm cranks | SHIMANO Steps E-6100, 38 teeth, 170 / 175 mm cranks |
| BBParts | VP COMP, cartridge | SHIMANO BB-52, BB unit | SHIMANO BB-52 BB unit | SHIMANO Steps |
| Rear derailleur | SHIMANO Acera | SHIMANO Deore | SHIMANO Deore | SHIMANO Cues 6000 |
| Shifters | SHIMANO Acera (8) | SHIMANO Deore (12) | SHIMANO Deore (12) | SHIMANO Cues 6000 (10) |
| Free wheel | SHIMANO CS-HG400-8, 11-40 (8) | SHIMANO CS-M6100-12, 10-51 (12) | SHIMANO CS-M6100 10-51 (12) | SHIMANO CS-LG400-10, 11-48 (10) |
| Chain | KMC Z8.3 | KMC X12 | KMC X12 | KMC eGlide |
| Hubs | QUANDO, 24 holes | AUTHOR Helium 15 / SHIMANO, 15 × 100 mm thru front axle, 12 × 148 mm thru rear axle, 32 holes | AUTHOR Helium 15 / SHIMANO 15 × 100 mm thru front axle 12 × 148 mm thru rear axle 32 holes | AUTHOR Xenon, 32 holes |
| Brakes | TEKTRO V | SHIMANO BR-MT410, disc hydraulic (7" rotors) | SHIMANO BR-MT400 disc hydraulic (7" rotors) | TEKTRO HD-M530, disc hydraulic (7" rotors) |
| Brakes levers | TEKTRO alloy | SHIMANO BL MT401 | SHIMANO BL MT400 | TEKTRO HD-M530 |
| Rims | alloy, 24 holes | AUTHOR Xenon TRC 29, 32 holes | AUTHOR Xenon TRC 29 32 holes | AUTHOR Xenon 29, 32 holes |
| Spokes | black stainless steel 2.0 mm | black stainless steel 2.0 mm | black stainless steel 2.0 mm | black stainless steel 2.2 mm |
| Tires | KENDA Small Block Eight, aramid, 24" × 1.95" | VITTORIA Barzo aramid 29" × 2.25" | VITTORIA Barzo foldable 29" × 2.25" | AUTHOR Speed Master 29" × 1.75" |
| Pedals | plastic | - | - | AUTHOR Non Slip alloy |
| Handlebar | AUTHOR Flat Top bar, 0 mm, 600 mm | AUTHOR Flatbar, 9°, 700 / 720 mm | AUTHOR Flatbar 9° 680 / 700 mm | AUTHOR, 25 mm, 680 / 700 mm |
| Stem | AUTHOR alloy | AUTHOR alloy | AUTHOR alloy | AUTHOR alloy |
| Seat post | AUTHOR alloy (31.6) | AUTHOR alloy (31.6) | AUTHOR alloy (31.6) | AUTHOR alloy (27.2) |
| Seat clamp | AUTHOR (34.9) | AUTHOR (34.9) | AUTHOR (34.9) | AUTHOR (31.8) |
| Saddle | AUTHOR Champion | AUTHOR Navigator | AUTHOR Fenix | AUTHOR Area Gel |
| Speed | 8 | 12 | 12 | 10 |
| Weight | 9,7 kg / 12" | 12,3 kg / 19" | 12,2 kg / 16" | 21,8 kg / 17" |
| Grips | - | AUTHOR Pro Lock | AUTHOR GripLock foam | AUTHOR Pro Lock |
| Engine | - | - | - | SHIMANO Steps E-6100, 250 W |
| Battery | - | - | - | SHIMANO E-8035 Li-Ion, 36 V, 14 Ah, 504 Wh |
| Display | - | - | - | SHIMANO Steps E-7000, LCD |
