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| Image |  |  |  |  |
|---|---|---|---|---|
| Product | AUTHOR ULTIMA 2008 | Impulse 29 2023-24 | AUTHOR ERA + 2008 | AUTHOR Solution 2013 |
| Code | UA#42741101 | UA#4294490225 | UA#42744401 | UA#42812301 |
| Model card | link | link | link | link |
| Size | 15" | 17", 19", 21" | M, L, XL | 15", 17", 19", 21", 23" |
| Frame | hi-ten 24" (L) | alloy 6061 29" | alloy MU9/6061, suspension | alloy 6061 26" |
| Front fork | hi-ten | RST Blaze 29 ML, lock out (100 mm) | ROCK SHOX Recon 355 Solo Air air, lock out (130 mm) | RST Gila ML mechanical lock out (100 mm) |
| Head parts | VP Comp. 1" | PRESTINE Integrated 1-1/8" | RITCHEY Zero Logic Integ Pro 1-1/8" | FSA Integrated 1-1/8" |
| Chain Wheel | PROWHEEL 42-34-24 152mm cranks | PROWHEEL, 42-34-24 teeth, 170 / 175 mm cranks | FSA Aftreburner Mega Exo 44-32-22 170 / 175 mm cranks | SUNTOUR XCT-T312 42-32-22 teeth 170 / 175 mm cranks |
| BBParts | VP Comp. | VP COMP, cartridge | FSA MegaExo BB unit | SUNTOUR XCM cartridge |
| Front derailleur | SHIMANO TZ-30 (28.6) | SHIMANO TY700 (34.9) | SRAM X9 (34.9) | SHIMANO M190 (34.9) |
| Rear derailleur | SHIMANO TY-18 | SHIMANO Altus | SRAM X9 | SHIMANO Acera |
| Shifters | SHIMANO Revoshift (18) | SHIMANO Altus (24) | SRAM X9 Trigger (27) | SHIMANO Altus (24) |
| Free wheel | SHIMANO MF-TZ-06 14-28 | SHIMANO HG200-8, 12-32 (8) | SRAM PG-970 11-34 | SHIMANO HG-31-8 11-32 (8) |
| Chain | SHIMANO HP-20 | KMC Z8.3 | SRAM PC-971 | KMC Z72 |
| Hubs | steel 36 holes | QUANDO Disc, 32 holes | AUTHOR Helium Pro cartridge 32 holes | QUANDO 32 holes |
| Brakes | V alloy | TEKTRO HD-M275 disc hydraulic (6" rotors) | HAYES Stroker Trail disc hydraulic (7" rotors) | TEKTRO 837AL |
| Brakes levers | TEKTRO plastic /alloy | TEKTRO HD-M275 | HAYES | SHIMANO Altus |
| Rims | alloy 36 holes | AUTHOR Xenon 29, 32 holes | AUTHOR Helium Pro 32 holes | AUTHOR Xenon 32 holes |
| Spokes | steel | black steel | black stainless steel 2.2mm butted | steel |
| Tires | 24" x 1 3/8" | VITTORIA Barzo 29" × 2.10" | MAXXIS Ignitor Kevlar 26" x 2.10" | AUTHOR Spanker 26" x 1.95" |
| Pedals | resin | plastic | SHIMANO M540 clipless | AUTHOR alloy / resin |
| Handlebar | KALIN steel | AUTHOR Flatbar, 9°, 700 mm | EASTON M-Lite XC 31.8 mm | KALIN steel 20 mm 620 / 640 mm |
| Grips | AUTHOR high density foam | AUTHOR kratton rubber | AUTHOR superlite foam | AUTHOR high density foam |
| Stem | KALIN steel | AUTHOR alloy | EASTON EA70 31.8 mm | ZOOM alloy |
| Seat post | KALIN steel (25.4) | AUTHOR alloy (31.6) | AUTHOR carbon (31.6) | ZOOM alloy (31.6) |
| Saddle | AUTHOR race-color | AUTHOR Courier | FIZIK Gobi XM | AUTHOR Mega Top |
| Speed | 18 | 24 | 27 | 24 |
| Weight | 12.40kg/ 15" | 14,9 kg / 19" | 12.80kg/ L | 13,8 Kg / 19" |
| Seat clamp | - | AUTHOR (34.9) | AUTHOR (34.9) | AUTHOR (34.9) |
| Shocker | - | - | oil-air shocker FOX Float Float RP2 190 / 50 mm (rear travel 130 mm) | - |
