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2026 Author

Impulse ASL

A 29″ aluminum frame hardtail crosscountry bike with upper mid-range components.
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FrameAluminum
SuspensionHardtail, 100mm
ForkSuntour XCM
Wheels29″ Aluminum
Drivetrain2 × 9
GroupsetCUES
BrakesTektro Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Impulse ASL
Other Crosscountry bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

Impulse ASL

27 mph

Similar Bikes

Highest gear

(descending)

Sizing
29"/16"

5'1" – 5'7"

29"/18"

5'5" – 6'0"

Rider Fit Notes

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Geometry
Specs
Build
Frame

alloy 29" (ASL)

Colors: White / Silver / Red; Silver / Green

Fork

SUNTOUR XCM32 LO 29, lock out (100 mm)

Travel: 100mm

Spring Type: Coil

Stem

AUTHOR alloy

Handlebar

AUTHOR alloy, rise 25 mm, 660/680 mm

Saddle

AUTHOR Fenix

Seatpost

AUTHOR alloy (31.6)

Type: Rigid

Pedals

plastic

Groupset
Rear Derailleur

SHIMANO Cues 3020

Crank

SHIMANO Cues 4000-2, 36-22 teeth, 170/175 mm cranks

Shifters

SHIMANO Cues 4000 (18)

Cassette

SHIMANO CS-LG300-9, 11-36 teeth (9)

Chain

KMC XGlide

Brakes

TEKTRO HD-M276, disc hydraulic (6" rotors)

Type: Tektro Hydraulic Disc

Wheels
Rims

AUTHOR Xenon 29 TRC, 32 holes

Spokes

black stainless steel 1.8 mm

Front Hub

QUANDO Disc, 32 holes

Rear Hub

QUANDO Disc, 32 holes

Tires

AUTHOR Rock Drive, 29" x 2.20"

Rider Notes
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First added December 6

Last updated May 30