Trek Precaliber 20 7-speed

Name: Trek Precaliber 20 7-speed
Brand: Trek

2025 YouthMountain youth Manufacturer page

Trek Precaliber 20 7-speed, color Viper Red

Last known price: $419

Prices shown first for United States
Fork travel: 35 mm
Wheels: 20″
Drivetrain: 1 × 7 32t / 14–28t
Gear range: 200%
Weight: 10.71 kg 23.6 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Rim brake

Rider height by size (cm)

Size guide

20" 114–132

Components

6 of 20 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

Alpha Silver Aluminum, 20" kids' frame size Not identified

Suspension

1 part

Fork

Kids' suspension, threadless steerer, 35mm travel Not identified

Drivetrain

6 parts

Bottom bracket

Square taper, 68mm, sealed cartridge Not identified
Cassette

SunRun freewheel, 14-28, 7 speed, Not identified
Chain
- KMC Z7 7 speeds
Crankset
- Prowheel 32t
Rear derailleur
- Shimano Tourney RD-TY300 7 speeds
RD-TY300
Shifters
- Shimano SL-RS45
SL-RS45

Brakes

2 parts

Brake levers

Kids', alloy Not identified
Brakes

Alloy linear-pull Not identified

Wheels and tires

4 parts

Front hub

Steel, 100mm bolt-on Not identified
Rear hub

Steel, 26T Not identified
Rims

Alloy 20", 32-hole, schrader valve Not identified
Tires
- Bontrager

Cockpit and contact points

6 parts

Grips

Kids' grip, 130mm width Not identified
Handlebar

Kids' steel, 25.4mm clamp, 40mm rise, 560mm width Not identified
Headset

Adjustable ball bearing, threadless Not identified
Pedals

Kids' Satellite, 9/16 thread Not identified
Saddle

Kids' padded, integrated seatpost, with handle Not identified
Stem
- Bontrager

Sizes and geometry

1 size Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 20"

Table

Reach 302mm

Stack 441mm

Wheelbase 860mm

Head angle 70.0°

Seat angle 72.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 20″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	302
Stackmm	441
Top tube lengthmm	445
Seat tube lengthmm	255
Head tube lengthmm	85
Head tube angle	70°
Seat tube angle	72°
Chainstay lengthmm	372
Wheelbasemm	860
Front centermm	490
Bottom bracket dropmm	30
Standover heightmm	491
Fork rakemm	35
Trailmm	59
Stack/reach ratio	1.46

Not published by the manufacturer: Bottom bracket height, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 10.71 kg

23.6 lb

Suspension

Suspension configuration: Hardtail
Front travel: 35 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 7
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

Shifting: Mechanical

Additional specifications

Tire clearance: Maximum tire width: 2.25″
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 20″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

22.9 gear inches

This value is above the central range for this class.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 257 bicycles with this information
Coverage: 70.0% of the class

Highest gear

45.7 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 257 bicycles with this information
Coverage: 70.0% of the class

Shifting

Mechanical

10 of 367 bicycles with this information use electronic shifting.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 367 bicycles with this information
Coverage: 100.0% of the class

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
Class reference (p10–p90): 14.0–80.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2025
Lowest gear: 257 bicycles with this information, 70.0% of the class
Highest gear: 257 bicycles with this information, 70.0% of the class

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 2025 builds
Specification	This bicycle Trek Precaliber 20 7-speed	Trek Precaliber 12	Trek Precaliber 16	Trek Precaliber 16 Coaster Brake	Trek Precaliber 20	Trek Precaliber 20 Freewheel
Frame
Bicycle weight	10.71 kg	6.84 kg	7.97 kg	7.97 kg	9.23 kg	9.27 kg
Fork material	Not informed	Steel	Steel	Steel	Steel	Steel
Suspension
Suspension configuration	Hardtail	Rigid	Rigid	Rigid	Rigid	Rigid
Front travel	35 mm	Not informed	Not informed	Not informed	Not informed	Not informed
Drivetrain
Smallest chainring	32	24	26	26	32	32
Largest chainring	32	24	26	26	32	32
Rear sprockets	7	Not informed	Not informed	Not informed	Not informed	1
Smallest sprocket	14	Not informed	Not informed	Not informed	Not informed	18
Largest sprocket	28	Not informed	Not informed	Not informed	Not informed	18
Lowest gear	22.9 in	Not informed	Not informed	Not informed	Not informed	35.6 in
Highest gear	45.7 in	Not informed	Not informed	Not informed	Not informed	35.6 in
Brakes
Brake type	Rim brake	Coaster brake	Coaster brake	Coaster brake	Coaster brake	Rim brake
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Mechanical	Mechanical	No shifting
Other specifications
Suspension	Hardtail	Rigid	Rigid	Rigid	Rigid	Rigid
Wheel size	20″	12″	16″	16″	20″	20″