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2006 Trek

Jack 3

A 26″ aluminum frame crosscountry bike with upper mid-range components.
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FrameAluminum
Wheels26″ Aluminum
Drivetrain2 × 9
GroupsetDeore
BrakesHayes 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)

41 km/h

Jack 3

44 km/h

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Highest gear

(descending)

Reviews
BikeRadar
Trek Jack 3(SG) review

Mar 2007 · BikeRadar

Trek have spent a lot of time with their star slopestyle and dirt rider Cameron McCaul developing their Jack range of jump bikes - and it shows. We get airborne on the top-of-the-range Jack 3.

Read Review

Specs
Build
Frame

Alpha Aluminum

Headset

Aheadset w/semi-cartridge bearings, Cro-Moly

Stem

Bontrager Big Earl, 10 degree, 31.8mm

Handlebar

Bontrager King Earl, 50mm rise, 31.8mm

Saddle

Bontrager Earl Kevlar

Seatpost

Bontrager King Earl

Type: Rigid

Pedals

Bontrager Big Earl

Groupset
Rear Derailleur

Shimano Deore LX

Front Derailleur

Shimano Deore

Crank

Bontrager King Earl 36/24 w/bash guard

Shifters

Shimano Deore

Cassette

SRAM PG950 11-34, 9 speed

Brakes

Hayes HFX-9, hydraulic disc, 8" front, 6" rear

Type: Hayes Hydraulic Disc

Wheels
Rims

Shimano M525 disc hubs w/Sun Ryno Lite rims

Tires

Bontrager Earl, 26x2.4"

Rider Notes
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First added 29 June

Last updated 29 June

Not listed for 2,897 days