Spawn Yama Jama 20"

Name: Spawn Yama Jama 20"
Brand: Spawn

2022 YouthMountain youth Manufacturer page

Fork travel: 80 mm
Wheels: 20″
Drivetrain: 1 × 10 30t / 11–36t
Gear range: 327%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

One Size

The manufacturer did not publish rider heights for these sizes.

Components

7 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

6061 - T6 ALLOY, HYDROFORMED & DOUBLE BUTTED TUBING Not identified

Suspension

1 part

Fork

BROOD ELDORADO, CARBON FIBER LOWER, ADJUSTABLE REBOUND, LOCKOUT - 80MM TRAVEL Not identified

Drivetrain

6 parts

Bottom bracket

SEALED EXTERNAL BEARING Not identified
Cassette
- SRAM 11–36t
Chain
- KMC X10 10 speeds
Crankset

BROOD STYX 2 PIECE DIRECT MOUNT ALLOY, 130MM Not identified
Rear derailleur
- SRAM GX
Shifters
- SRAM GX

Brakes

2 parts

Brake levers
- Tektro
Brakes
- Tektro

Wheels and tires

4 parts

Front hub

ALLOY, SEALED BEARING - 100 X 15 Not identified
Rear hub

ALLOY, SEALED BEARING - 135 X 9 Not identified
Rims

BROOD TR27, ALLOY, 28H Not identified
Tires

BROOD MAXTION, 20" X 2.20", TUBELESS READY Not identified

Cockpit and contact points

7 parts

Grips

BROOD TENDERIDERZ LOCK-ON Not identified
Handlebar

ALLOY, 560MM WIDE, 31.8MM Not identified
Headset

SEALED BEARING Not identified
Pedals
- Wellgo
Saddle

BROOD THRONE PIVOTAL Not identified
Seatpost

ALLOY PIVOTAL, 220MM, 30.9MM Not identified
Stem

FORGED ALLOY, 40MM Not identified

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size One Size

Table

Geometry diagram unavailable

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

Size

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	450
Seat tube lengthmm	255
Head tube lengthmm	100
Head tube angle	68°
Seat tube angle	72°
Chainstay lengthmm	340
Wheelbasemm	869
Front centermm	529

Not published by the manufacturer: Reach, Stack, Bottom bracket drop, Bottom bracket height, Standover 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

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

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: 2022
Sample: 297 bicycles with this information
Coverage: 72.2% 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: 2022
Sample: 297 bicycles with this information
Coverage: 72.2% of the class

Shifting

Mechanical

16 of 411 bicycles with this information use electronic shifting.

Cohort: Youth / Mountain youth Model year: 2022
Sample: 411 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): 14.0–78.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2022
Lowest gear: 297 bicycles with this information, 72.2% of the class
Highest gear: 297 bicycles with this information, 72.2% 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 2022 builds

Differences across 2022 builds
Specification	This bicycle Spawn Yama Jama 20"	Spawn Yama Jama 22"	Spawn Yama Jama 24"	Spawn Yama Jama 26"
Frame
Fork material	Carbon	Carbon	Not informed	Not informed
Suspension
Front travel	80 mm	100 mm	100 mm	120 mm
Drivetrain
Smallest chainring	30	30	32	32
Largest chainring	30	30	32	32
Rear sprockets	10	10	11	11
Largest sprocket	36	36	42	42
Lowest gear	16.7 in	18.3 in	18.3 in	19.8 in
Highest gear	54.6 in	60.0 in	69.8 in	75.6 in
Other specifications
Tire width	2.2″	2.3″	2.3″	2.3″
Wheel size	20″	22″	24″	26″
Fork spring	Not informed	Not informed	Air	Air