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MSRP | ||
|---|---|---|
Where to Buy | — $1 At | — $1 At |
Category | Crosscountry | Crosscountry |
Weight | 32.0 lbs | 32.2 lbs |
Frame | Aluminum | Aluminum |
| RST GILA | RST BLAZE | |
Wheels | Aluminum | Aluminum |
Wheel Size | 27.5″ | 29″ |
| Tektro Hydraulic Disc | Tektro Hydraulic Disc | |
| Altus | Altus | |
Drivetrain | 3 × 7 | 3 × 7 |
Suspension | Hardtail | Hardtail |
Front Travel | 100mm | 100mm |
Brand Site | ||
Summary | The Author Impulse and Author Impulse 29 are both aluminum frame hardtail crosscountry bikes with modest components. The Impulse has 27.5″ aluminum wheels, while the Impulse 29 has 29″ aluminum wheels. | |
Ask 99 Spokes
Based on frame geometry and build specs.
Frame | alloy 6061 27.5" | alloy 6061 29" |
|---|---|---|
Fork | RST Gila 27.5 ML lock out (100 mm) Travel: 100mm Spring Type: Coil | RST Blaze 29 ML lock out (100 mm) Travel: 100mm Spring Type: Coil |
Stem | AUTHOR alloy | AUTHOR alloy |
Handlebar | AUTHOR 20 mm 660 / 680 mm | AUTHOR Flatbar 0 mm 700 mm |
Saddle | AUTHOR Courier | AUTHOR Courier |
Seatpost | AUTHOR alloy (31.6) Type: Rigid | AUTHOR alloy (31.6) Type: Rigid |
Pedals | resin | resin |
Grips | AUTHOR high density foam | AUTHOR high density foam |
Rear Derailleur | SHIMANO Altus | SHIMANO Altus |
|---|---|---|
Front Derailleur | SHIMANO M190 (34.9) | SHIMANO M190 (34.9) |
Crank | PROWHEEL 42-34-24 teeth 170 / 175 mm cranks | PROWHEEL 42-32-22 teeth 170 / 175 mm cranks |
Shifters | SHIMANO Altus (21) | SHIMANO Altus (21) |
Cassette | SHIMANO HG20-7 12-32 (7) | SHIMANO HG20-7 12-32 (7) |
Chain | KMC Z51 | KMC Z51 |
Brakes | TEKTRO Auriga disc hydraulic (6" rotors) Type: Tektro Hydraulic Disc | TEKTRO Auriga disc hydraulic (7" rotors) Type: Tektro Hydraulic Disc |
Rims | AUTHOR Radon 27.5 32 holes | AUTHOR Radon 29 32 holes |
|---|---|---|
Spokes | steel | black steel |
Front Hub | QUANDO Disc 32 holes | QUANDO Disc 32 holes |
Rear Hub | QUANDO Disc 32 holes | QUANDO Disc 32 holes |
Tires | AUTHOR Rocket 27.5" x 2.10" | AUTHOR Rocket 29" x 2.10" |