Bike details
Overview
Key information split into simple groups.
Bike summary
-
Category -
Frame Aluminum -
Wheels 27.5" -
Travel Front 100mm -
Fork RST GILA
-
Groupset Altus, Tourney -
Suspension Hardtail -
Drivetrain 3 × 8 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
14"
140cm - 158cm
16"
155cm - 170cm
18"
168cm - 185cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
alloy 6061 27.5" (ASL)
Suspension Fork
RST Gila 27.5 ML lock out (100 mm)
Drivetrain
Rear Derailleur
SHIMANO Altus
Front Derailleur
SHIMANO TY700 (34.9)
Shift Levers
SHIMANO Altus (24)
Cassette
SHIMANO HG200-8, 12-32 (8)
Crank
PROWHEEL, 42-34-24 teeth, 170 mm cranks
Chain
KMC Z8.3
Pedals
resin
Wheels
Front Hub
QUANDO Disc, 32 holes
Rear Hub
QUANDO Disc, 32 holes
Rims
AUTHOR Xenon 27.5, 32 holes
Spokes
black steel
Tires
AUTHOR Speed Master 27.5" × 2.00"
Brakes
Brakes
TEKTRO HD-M276, disc hydraulic (6" rotors)
Cockpit
Stem
AUTHOR alloy
Handlebar
AUTHOR rise 25 mm, 9°, 640 / 660 mm
Grips
AUTHOR high density foam
Seat
Saddle
AUTHOR Fenix
Seatpost
AUTHOR alloy (31.6)
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 14" | 16" | 18" |
|---|---|---|---|
| Stack Reach Ratio | 1.65 mm | 1.62 mm | 1.55 mm |
| Bottom Bracket Height | 310 mm | 310 mm | 310 mm |
| Front Center | 612 mm | 633 mm | 649 mm |
| Rake | 44 mm | 44 mm | 44 mm |
| Trail | 83 mm | 86 mm | 97 mm |
| Stack | 609 mm | 616 mm | 626 mm |
| Reach | 368 mm | 381 mm | 403 mm |
| Top Tube Length | 552 mm | 567 mm | 592 mm |
| Seat Tube Angle | 73 ° | 73 ° | 73 ° |
| Seat Tube Length | 356 mm | 406 mm | 457 mm |
| Head Tube Angle | 70 ° | 69.5 ° | 69.5 ° |
| Head Tube Length | 110 mm | 120 mm | 130 mm |
| Chainstay Length | 442 mm | 442 mm | 442 mm |
| Wheelbase | 1050 mm | 1071 mm | 1087 mm |
| Bottom Bracket Drop | 45 mm | 45 mm | 45 mm |
| Wheels | 27" | 27" | 27" |
| Rider Min Height | 140 cm | 155 cm | 168 cm |
| Rider Max Height | 158 cm | 170 cm | 185 cm |
Model Overview
Impulse 27.5 ASL completes the Author Impulse model. Author launched 25 bikes of this model so far. Take a sneak peek at all Author Impulse bikes models from 2023, by clicking here.
Safety
Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.
Crosscountry bikes average price
Our math shows that the average cost of a dependable Crosscountry bike is 1905$. However, this doesn’t mean that if you spend less money on a Crosscountry bike, you couldn’t get a decent one. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
Average weight for Crosscountry bikes
The average weight for Crosscountry bikes is 12.31 kg (27.14 lbs). Having an easier bike than average will give you a great advantage on climbs. However, a heavier bike will gain more speed on descends.
considerably heavier than average, Impulse 27.5 ASL has a weight of 13.9 kg (30.64 lbs). In short, the average Crosscountry bike weight is 12.92% lower than this one.
Impulse 27.5 ASL components
Fork
The fork installed on this bike is the RST GILA model. The travel on this model is 100mm. Bike forks are good shock absorbers and provide a smooth ride and a great experience. In conclusion, always look for a fork with decent travel when you buy a bike.
Wheels
As for the wheels, Author Impulse 27.5 ASL 2023, has a 27.5″ aluminum model. 27.5″ wheels are a mixture between 29″ wheels and 26″ wheels. However, the overall traction of 27.5″ wheels is lower than 29″ wheels.
Brakes
For your safety, it is important to have quality breaks on your bike. Author Impulse 27.5 ASL has Hydraulic Disc brakes installed. With Hydraulic Disc brakes, you’ll be able to stop on a dime, even in wet or icy conditions. To sum up, you can ride your bike with confidence.
Sizes
This bike is available in 3 sizes. They vary from 140 cm – 185 cm (4.59 ft – 6.07 ft). In conclusion, you won’t have a problem finding one that suits you.