Trailcraft Blue Sky 20 Pro Build

Name: Trailcraft Blue Sky 20 Pro Build
Brand: Trailcraft

2025 YouthMountain youth Manufacturer page

Last known price: $1,999

Prices shown first for United States
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 10 30t / 11–36t
Gear range: 327%
Weight: 8.5 kg 18.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

One Size 114.3–127

Components

7 of 16 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

Blue Sky 20 7005 Series Aluminum Not identified

Suspension

1 part

Fork

Trailcraft TC30 1425 grams, carbon lowers Not identified

Drivetrain

4 parts

Cassette
- SunRace
Crankset

Trailcraft Direct Mount 127mm, 28 or 30t option Not identified
Rear derailleur
- Shimano ZEE RD-M640
RD-M640
Shifters
- Shimano Deore SL-M4100 10 speeds
SL-M4100

Brakes

1 part

Brakes
- Shimano Deore BR-M6100
BR-M6100

Wheels and tires

2 parts

Cockpit and contact points

7 parts

Grips

Trailcraft Lock-On Not identified
Handlebar

Trailcraft Alloy superlight Not identified
Headset

Trailcraft Precision Sealed Cartridge Not identified
Pedals
- VP
Saddle

Trailcraft Not identified
Seatpost

Trailcraft Superlight 130 grams, 30.9 Not identified
Stem

Trailcraft Superlight 70 grams, Length: 40mm 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 reach, stack, head 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
Top tube lengthmm	445
Seat tube lengthmm	270
Head tube angle	68°
Seat tube angle	73°
Chainstay lengthmm	340
Wheelbasemm	864
Standover heightmm	508

Not published by the manufacturer: Reach, Stack, Head tube length, Front center, Bottom bracket drop, Bottom bracket height, Fork rake, Trail, Stack/reach ratio, 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
Fork material: Carbon
Bicycle weight: 8.5 kg

18.7 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 16.7 in
Highest gear: 54.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.2″
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

16.7 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

54.6 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: 6.4 km/h
Highest gear: 20.9 km/h

Total gear range 327%

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: 16.7–54.6 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 Trailcraft Blue Sky 20 Pro Build	Trailcraft Blue Sky 20 Rigid Blue Sky 20 LTD	Trailcraft Blue Sky 20 Special Build
Frame
Fork material	Carbon	Not informed	Carbon
Bicycle weight	8.5 kg	8.48 kg	9.16 kg
Drivetrain
Smallest chainring	30	28	30
Largest chainring	30	28	30
Rear sprockets	10	9	9
Largest sprocket	36	38	38
Lowest gear	16.7 in	14.7 in	15.8 in
Highest gear	54.6 in	50.9 in	54.6 in
Other specifications
Travel	Configuration: Rigid	Configuration: RigidFront: Additional specification: Not available: Yes	Configuration: Rigid