Giant STP 20

Name: Giant STP 20
Brand: Giant

2021 YouthMountain youth Manufacturer page

Last known price: $535

Prices shown first for United States
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 12 30t / 12–32t
Gear range: 267%
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

One Size 115–130

Components

10 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

ALUXX-Grade Aluminum Not identified

Suspension

2 parts

Fork

alloy, rigid Not identified
Rear shock

None

Drivetrain

7 parts

Bottom bracket

cartridge Not identified
Cassette
- Shimano CS-HG200
CS-HG200
Chain
- KMC Z7 7 speeds
Crankset

alloy forged, 30t Not identified
Front derailleur

None
Rear derailleur
- Shimano Altus
Shifters
- Shimano

Brakes

2 parts

Brake levers

alloy, junior Not identified
Brakes

mechanical disc Not identified

Wheels and tires

5 parts

Front hub
- Giant
Rear hub
- Giant
Rims
- Giant
Spokes

stainless, 14g Not identified
Tires
- Kenda

Cockpit and contact points

5 parts

Handlebar
- Giant
Pedals

platform Not identified
Saddle
- Giant
Seatpost

alloy, 27.2x250 Not identified
Stem

forged alloy, 0-degree Not identified

Sizes and geometry

1 size Open in the geometry plotter

Enter your height to highlight matching ranges.

Size One Size

Table

Geometry diagram unavailable

The drawing needs seat tube length and bottom bracket drop / Bottom bracket height, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	313
Stackmm	448
Top tube lengthmm	450
Head tube lengthmm	105
Head tube angle	69°
Seat tube angle	73°
Chainstay lengthmm	365
Wheelbasemm	887
Stack/reach ratio	1.43
Suspension and parts
Crank lengthmm	127

Not published by the manufacturer: Seat tube length, Front center, Bottom bracket drop, Bottom bracket height, Standover height, Fork rake, Trail, Front travel, Rear travel, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

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: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 12
Largest sprocket: 32
Lowest gear: 18.8 in
Highest gear: 50.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.6″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 20″

Technical analysis

2 measures

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

Lowest gear

18.8 gear inches

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2021
Sample: 230 bicycles with this information
Coverage: 72.3% of the class

Highest gear

50.0 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2021
Sample: 230 bicycles with this information
Coverage: 72.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.2 km/h
Highest gear: 19.2 km/h

Total gear range 267%

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: 18.8–50.0 gear inches
Class reference (p10–p90): 15.6–80.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2021
Lowest gear: 230 bicycles with this information, 72.3% of the class
Highest gear: 230 bicycles with this information, 72.3% 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 2021 builds

Differences across 2021 builds
Specification	This bicycle Giant STP 20	Giant STP 20 FS	Giant STP 24	Giant STP 24 FS	Giant STP 26	Giant STP 26 SS
Frame
Fork material	Aluminum	Not informed	Aluminum	Not informed	Not informed	Not informed
Suspension
Suspension configuration	Rigid	Hardtail	Rigid	Hardtail	Hardtail	Hardtail
Front travel	Not informed	60 mm	Not informed	80 mm	120 mm	120 mm
Drivetrain
Rear sprockets	12	7	12	8	10	1
Smallest sprocket	12	12	12	12	11	16
Largest sprocket	32	32	32	42	46	16
Lowest gear	18.8 in	18.8 in	22.5 in	17.1 in	17.0 in	48.8 in
Highest gear	50.0 in	50.0 in	60.0 in	60.0 in	70.9 in	48.8 in
Brakes
Brake type	Mechanical disc	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Mechanical	Mechanical	No shifting
Other specifications
Suspension	Rigid	Hardtail	Rigid	Hardtail	Hardtail	Hardtail
Tire width	2.6″	2.2″	2.6″	2.2″	2.25″	2.25″
Wheel size	20″	20″	24″	24″	26″	26″
Fork spring	Not informed	Coil	Not informed	Coil	Air	Air
Bottom bracket standard	Not informed	Not informed	Not informed	Not informed	BSA	BSA