Trek Superfly 20

2015 YouthGeneral youth

Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 6 32t / 14–28t
Gear range: 200%
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

6 of 14 identified

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

20" Dialed frame size, Alpha Silver Aluminum Not identified

Suspension

1 part

Fork

Dialed 20" alloy Not identified

Drivetrain

4 parts

Cassette

SunRun freewheel 14-28, 6 speed Not identified
Crankset

Alloy, 32T Not identified
Rear derailleur
- Shimano Tourney RD-TX35
RD-TX35
Shifters
- Shimano Tourney

Brakes

1 part

Brakes

Alloy linear-pull brakes, Dialed alloy levers Not identified

Wheels and tires

1 part

Tires
- Bontrager

Cockpit and contact points

6 parts

Handlebar
- Bontrager
Headset

1-1/8" Semi-Integrated Not identified
Pedals

Dialed 20" size, platform Not identified
Saddle

Dialed 20" size, padded Not identified
Seatpost
- Bontrager
Stem
- Bontrager

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: Aluminum
Fork material: Aluminum

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 6
Smallest sprocket: 14
Largest sprocket: 28
Lowest gear: 22.9 in
Highest gear: 45.7 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 1.85″
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.8 km/h
Highest gear: 17.5 km/h

Total gear range 200%

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: 22.9–45.7 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 2015 builds
Specification	This bicycle Trek Superfly 20	Trek Superfly 16	Trek Superfly 24	Trek Superfly 24 Disc	Trek Superfly 5	Trek Superfly 6
Frame
Fork material	Aluminum	Aluminum	Not informed	Not informed	Not informed	Not informed
Suspension
Suspension configuration	Rigid	Rigid	Rigid	Rigid	Not informed	Not informed
Drivetrain
Front chainrings	1	1	3	3	2	2
Smallest chainring	32	28	22	22	22	22
Largest chainring	32	28	42	42	36	36
Rear sprockets	6	Not informed	7	8	10	10
Smallest sprocket	14	Not informed	14	11	11	11
Largest sprocket	28	Not informed	34	32	36	36
Lowest gear	22.9 in	Not informed	15.5 in	16.5 in	17.7 in	17.7 in
Highest gear	45.7 in	Not informed	72.0 in	91.6 in	94.9 in	94.9 in
Brakes
Brake type	Rim brake	Rim brake	Rim brake	Hydraulic disc	Hydraulic disc	Hydraulic disc
Other specifications
Suspension	Rigid	Rigid	Rigid	Rigid	Not informed	Not informed
Tire width	1.85″	1.75″	1.85″	1.85″	2.2″	2.2″
Travel	Configuration: Rigid	Configuration: Rigid	Configuration: Rigid	Configuration: Rigid	Not informed	Not informed
Wheel size	20″	16″	24″	24″	27.5″ / 29″	27.5″ / 29″