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| Image |  |  | - | - |
|---|---|---|---|---|
| Product | Ultrasonic 24 2025 | AUTHOR Enigma 2020 | - | - |
| Code | UA#42954801 | UA#42929202 | - | - |
| Model card | link | link | - | - |
| Size | 12" | 17", 19" | - | - |
| Frame | triple butted hydroformed alloy 6061 24" | double butted hydroformed alloy 6061 29"C (L) | - | - |
| Front fork | alloy 6061 24" | RST ViV Air E TnL air remote lock out (80 mm) | - | - |
| Head parts | PRESTINE Integrated, 1.5" tapered | AUTHOR Integrated 1-1/8" | - | - |
| Chain Wheel | PROWHEEL Boom, 32 teeth, 140 mm cranks | SHIMANO Steps E6010 38 teeth 170 mm cranks | - | - |
| BBParts | VP COMP, cartridge | SHIMANO Steps | - | - |
| Rear derailleur | SHIMANO Acera | SHIMANO Deore | - | - |
| Shifters | SHIMANO Acera (8) | SHIMANO Deore (10) | - | - |
| Free wheel | SHIMANO CS-HG400-8, 11-40 (8) | SHIMANO HG50-10 11-36 (10) | - | - |
| Chain | KMC Z8.3 | KMC e10T | - | - |
| Hubs | QUANDO, 24 holes | AUTHOR Xenon 32 holes | - | - |
| Brakes | TEKTRO V | TEKTRO Gemini disc hydraulic (7" rotors) | - | - |
| Brakes levers | TEKTRO alloy | TEKTRO Gemini WS | - | - |
| Rims | alloy, 24 holes | AUTHOR Xenon 29 32 holes | - | - |
| Spokes | black stainless steel 2.0 mm | stainless steel hi-ten 2.2 mm black | - | - |
| Tires | KENDA Small Block Eight, aramid, 24" × 1.95" | AUTHOR Speed Master 29" × 1.75" | - | - |
| Pedals | plastic | AUTHOR Non Slip alloy | - | - |
| Handlebar | AUTHOR Flat Top bar, 0 mm, 600 mm | AUTHOR 15 mm 660 / 680 mm | - | - |
| Stem | AUTHOR alloy | AUTHOR alloy | - | - |
| Seat post | AUTHOR alloy (31.6) | AUTHOR alloy (27.2) | - | - |
| Seat clamp | AUTHOR (34.9) | AUTHOR (31.8) | - | - |
| Saddle | AUTHOR Champion | AUTHOR Area Gel | - | - |
| Speed | 8 | 10 | - | - |
| Weight | 9,7 kg / 12" | 20,9 kg /20" | - | - |
| Engine | - | SHIMANO Steps DUE-6100, 250 W | - | - |
| Battery | - | SHIMANO BT-E8010 Li-lon, 36 V, 14 Ah, 500 Wh | - | - |
| Display | - | LCD SC-E6100 | - | - |
| Grips | - | AUTHOR Microtech ErgoGrip | - | - |
