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2011 Trek

Scratch Air 9

A 26″ aluminum frame full suspension downhill bike with high-end components.
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FrameAluminum
SuspensionFull, 170 / 170mm
Wheels26″ Aluminum
Drivetrain2 × 10
GroupsetXT
BrakesAvid Hydraulic Disc
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Insights
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)

25 mph

Scratch Air 9

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
15.5"

5'0" – 5'6"

17.5"

5'6" – 6'1"

19.5"

5'9" – 6'3"

21.5"

6'1" – 6'6"

🐐 Estimated

Rider Fit Notes

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Reviews
BikeRadar
Trek Scratch Air 9 – First ride review

Dec 2010 · Mike Davis

For big rides in challenging terrain, Trek’s revamped Scratch Air 9 is a strong contender

Read Review

Bikerumor
Rough Review: 2011 Trek Scratch Air 9 Tested In The North East Kingdom

Oct 2010 · ThomP

Over Columbus day weekend I was up in the North East Kingdom of Vermont to ride the Kingdom Trails. Lucky for me, this trip coincided with a Trek demo at East Burke Sports. My delusional plan was to ride basically every bike Demo Dave O’Connell had in his stable…this was not to be. Columbus day …

Read Review

Specs
Build
Frame

Alpha Red Aluminum w/Aluminum Armor, ABP, Full Floater, alloy EVO Link, E2 tapered head tube, oversized pivot bearings, ISCG03 mounts, 142x12mm or 135x12mm rear axle adaptors, replaceable derailleur hanger, adjustable geometry, 170mm travel

Headset

Cane Creek Frustum SE Light Edition, E2

Stem

Bontrager Rhythm, 31.8mm

Handlebar

Bontrager Rhythm Pro, 31.8mm, 50mm rise, 9 degree sweep

Saddle

Bontrager Evoke 4, titanium rails

Seatpost

Crank Brothers Joplin 4R, 31.6mm

TypeRigid

Pedals

n/a

Groupset
Rear Derailleur

Shimano Deore XT

Front Derailleur

Shimano Deore XT, MRP LRP

Crank

Race Face Atlas, 36/24 w/bash guard

Shifters

Shimano Deore XT, 10 speed

Cassette

Shimano M77110 11-36, 10 speed

Brakes

Avid Elixir CR hydraulic disc brakes

TypeAvid Hydraulic Disc

Wheels
Rims

DT Swiss E 2000, 32 hole, 20mm front hub, 142x12mm rear hub; tubeless compatible

Tires

Bontrager XR4 Expert, 26x2.35"

Rider Notes
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First added June 29

Last updated June 29

Not listed for 3,256 days