Giant STP 26

2025 YouthMountain youth Manufacturer page

Last known price: $1,200

Prices shown first for United States
Fork travel: 100 mm
Wheels: 26″
Drivetrain: 1 × 10 30t / 11–48t
Gear range: 436%
Weight: 12.51 kg 27.6 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

Regular 140–160
LG 155–170

Components

15 of 21 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, horizontal dropouts, integrated chain tensioner Not identified

Suspension

2 parts

Fork
- Giant
Rear shock

None

Drivetrain

7 parts

Bottom bracket

threaded Not identified
Cassette
- microSHIFT ADVENT X H-Series 10 Speed Cassette 11-48 10 speeds
CS-H104
Chain
- KMC X10 10 speeds
Crankset
- Prowheel 30t
Front derailleur

None
Rear derailleur
- microSHIFT Advent X
RD-M6205
Shifters
- microSHIFT Advent X
SL-M9605

Brakes

2 parts

Wheels and tires

5 parts

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

stainless, 14g Not identified
Tires
- Maxxis

Cockpit and contact points

6 parts

Grips
- Giant
Handlebar
- Giant
Pedals

platform Not identified
Saddle
- Giant
Seatpost

alloy, two-bolt, 30.9x300mm (regular) alloy, two-bolt, 30.9x350mm (large) Not identified
Stem

forged alloy, 0-degree Not identified

Sizes and geometry

2 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size Regular

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 2 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	374	401
Stackmm	579	588
Top tube lengthmm	545	575
Head tube lengthmm	100	110
Head tube angle	67°	67°
Seat tube angle	73.5°	73.5°
Chainstay lengthmm	435	435
Wheelbasemm	1086	1117
Standover heightmm	679.5	717.6
Stack/reach ratio	1.55	1.47
Suspension and parts
Crank lengthmm	155	155

Not published by the manufacturer: Seat tube length, Front center, Bottom bracket drop, Bottom bracket 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
Bicycle weight: 12.51 kg

27.6 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 48
Lowest gear: 16.3 in
Highest gear: 70.9 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.2″
Wheel material: Aluminum
Wheel size: 26″

Technical analysis

3 measures

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

Lowest gear

16.3 gear inches

This value is within 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

70.9 gear inches

This value is within 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: 6.2 km/h
Highest gear: 27.2 km/h

Total gear range 436%

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: 16.3–70.9 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 Giant STP 26	Giant STP 26 SS
Frame
Bicycle weight	12.51 kg	11.24 kg
Drivetrain
Rear sprockets	10	1
Smallest sprocket	11	16
Largest sprocket	48	16
Lowest gear	16.3 in	48.8 in
Highest gear	70.9 in	48.8 in
Cockpit
Shifting	Mechanical	No shifting