Bombtrack Beyond Junior

Name: Bombtrack Beyond Junior
Brand: Bombtrack

2020 YouthRoad youth Manufacturer page

Suspension: Rigid
Wheels: 24″
Drivetrain: 1 × 9 32t / 11–42t
Gear range: 382%
Frame: Aluminum
Brakes: Mechanical disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

17 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

6061 aluminum, triple butted downtube, rack and fender mounts, replaceable hanger, 68 mm BSA shell Not identified

Suspension

1 part

Fork

6061 aluminum, tapered double butted blades, QR disc, 1-1/8 steerer, with fender / rack / triple cage mounts Not identified

Drivetrain

7 parts

Bottom bracket

BSA sealed BB, 118 mm, square taper Not identified
Cassette
- microSHIFT Advent 11–42t
CS-H093
Chain
- KMC
Crankset
- Bombtrack 32t
Front derailleur

None
Rear derailleur
- microSHIFT ADVENT Medium Cage Clutch 9 speeds
RD-M6195M
Shifters
- microSHIFT ADVENT Drop Bar Shifters 1×9 9 speeds
SB-M090

Brakes

1 part

Brakes
- Tektro

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Other components

3 parts

Fenders

None
Lights

None
Racks

None

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 XXS

Table

Reach 325mm

Stack 501mm

Wheelbase 919mm

Head angle 71.5°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 24″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	325
Stackmm	501
Top tube lengthmm	473
Seat tube lengthmm	330
Head tube lengthmm	100
Head tube angle	71.5°
Seat tube angle	73.5°
Chainstay lengthmm	390
Wheelbasemm	919
Front centermm	531
Bottom bracket dropmm	30
Standover heightmm	672
Fork rakemm	45
Trailmm	55.4
Stack/reach ratio	1.54

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
Fork material: Aluminum

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 18.3 in
Highest gear: 69.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire clearance: Maximum tire width: 2.1″
Tire width: 1.95″
Wheel material: Aluminum
Wheel size: 24″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 26.7 km/h

Total gear range 382%

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: 18.3–69.8 gear inches

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 2020 builds

Differences across 2020 builds
Specification	This bicycle Bombtrack Beyond Junior	Bombtrack Beyond
Frame
Frame material	Aluminum	Steel
Fork material	Aluminum	Steel
Drivetrain
Front chainrings	1	2
Smallest chainring	32	28
Largest chainring	32	42
Rear sprockets	9	10
Largest sprocket	42	36
Lowest gear	18.3 in	22.6 in
Highest gear	69.8 in	110.7 in
Other specifications
Tire width	1.95″	2″
Wheel size	24″	27.5″ / 29″