Trek Jet 12

2011 YouthGeneral youth

Suspension: Rigid
Wheels: 12″
Drivetrain: 1 × 1 24t / 19t
Gear range: 100%
Frame: Steel
Brakes: Coaster brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

13 parts

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

12" Dialed frame size, high tensile steel Not identified

Suspension

1 part

Fork

High tensile steel Not identified

Drivetrain

5 parts

Cassette

19T cog Not identified
Crankset

Dialed 2.75" length, 24T Not identified
Front derailleur

None
Rear derailleur

None
Shifters

None

Brakes

1 part

Brakes

Coaster Not identified

Wheels and tires

2 parts

Rims

Steel front hub, coaster brake rear hub; 20-hole steel 12" rims Not identified
Tires

Cross knobby, 12x2.125" Not identified

Cockpit and contact points

6 parts

Handlebar

Dialed 12" size, steel Not identified
Headset

Adjustable ball bearing Not identified
Pedals

Dialed 12" size, platform Not identified
Saddle

Dialed 12" size, padded Not identified
Seatpost

Steel Not identified
Stem

Alloy and steel, two bolt Not identified

Sizes and geometry

1 size

Rider-height ranges are not published for these sizes.

Size

Geometry not published

The manufacturer lists these sizes without frame measurements, so there is no drawing or geometry table.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Steel
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 24
Largest chainring: 24
Rear sprockets: 1
Smallest sprocket: 19
Largest sprocket: 19
Lowest gear: 15.2 in
Highest gear: 15.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Coaster brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Tire width: 2.125″
Wheel material: Aluminum
Wheel size: 12″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 5.8 km/h
Highest gear: 5.8 km/h

Total gear range 100%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 15.2–15.2 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2011 builds
Specification	This bicycle Trek Jet 12	Trek Jet 16	Trek Jet 20	Trek Jet 20 S
Frame
Frame material	Steel	Steel	Aluminum	Steel
Drivetrain
Smallest chainring	24	26	32	32
Largest chainring	24	26	32	32
Lowest gear	15.2 in	21.9 in	33.7 in	33.7 in
Highest gear	15.2 in	21.9 in	33.7 in	33.7 in
Other specifications
Tire width	2.125″	2.125″	1.95″	1.95″
Wheel size	12″	16″	20″	20″