the Beyond Junior

a diminutive bike for big adventures.

"Relaxed and confident, young riders get big capable tyres, wide flared bars and short stems for control..."

Introducing the Beyond Junior

Built for tearaways, the Beyond Junior ensures young riders aren’t left behind. Using the same geometry as its larger siblings, 24-inch wheels, a light aluminium frame, and flared bars keep things manageable for smaller riders. Teaching self-sufficiency, all the mounting points you’d expect are present, allowing its rider to carry as much or as little as they want. With Tektro Lyra disc brakes providing full-sized stopping power, a custom 9-speed Microshift Advent drivetrain includes levers feature a reduced lever reach and spring tension, specifically tailored to little hands.


    • * Child-specific 24” touring bike based on the Beyond.
    • * Aluminum frame with toptube direct mounts and cage mounts underneath the downtube.
    • * Aluminum fork with triple cage mount bosses on fork blades.
    • * 1.95’’ Kenda Small Block Eight tires.
    • * 380 mm Beyond handlebar.
    • * Dropbar specific touring geometry with low stand over.
    • * Short reach Microshift Advent 1 x 9 drop bar dual control levers.
    • * Bombtrack Mach 152 mm square taper crank with a narrow wide 32 T chainring.
    • * New Bombtrack ARC disc brake hubs.
    • * Microshift Advent rear derailleur with reduced spring tension for easier actuation and 11 - 42 T cassette.
    • * Tektro Lyra disc brakes with Jagwire KEB-SL compressionless cable housing.
    • * Bombtrack Drift children´s saddle.



    Color 1 Glossy Picton Blue
    Color 2 -
    Frame 6061 aluminium, QR,rack / fender mounts,68 mm BSA BB shell
    Fork 6061 aluminium, QR, fender / rack / triple cage mounts,internal hub dynamo cable routing
    Handlebar BOMBTRACK BEYOND travel bar, 31.8 mm, 30° flare
    Grips BOMBTRACK CONTROL bar tape
    Stem BOMBTRACK WANDER forged aluminium stem, +17°
    Headset NECO H282 sealed external aheadset, 1.1/8''
    Levers MICROSHIFT ADVENT SB-M090 dual control lever mechanic
    Shifter MICROSHIFT ADVENT SB-M090 dual control lever 1 x 9
    Brakes TEKTRO MIRA F / LYRA R mechanic disc brake with 160 mm F /140 mm R rotors
    Crankset BOMBTRACK MACH square taper crank
    BB BSA sealed BB, 118 mm, square taper
    Pedals WELLGO B109N flat pedal
    Chain KMC X9 chain, 1/2'' x 11/128'', 98L
    Chainring forged steel, narrow wide, 32 T
    Cassette MICROSHIFT CS-H093 9-speed, 11 - 42 T
    Front derailleur -
    Rear derailleur MICROSHIFT RD-M6195M, clutch
    Front hub BOMBTRACK ARC sealed, 6-bolt disc hub, hex key skewer
    Rear hub BOMBTRACK ARC sealed hub, 11-speed, 6-bolt disc, hex key skewer
    Through axle -
    Front rim BOMBTRACK TX20 double wall, i19, 32h
    Rear rim BOMBTRACK TX20 double wall, i19, 32h
    Seat post BOMBTRACK BEECH aluminium seatpost, 27.2 mm x 400 mm
    Seat clamp BOMBTRACK ORIGIN forged aluminium seat clamp, 31.8 mm
    Front tire KENDA SMALL BLOCK EIGHT, 24" x 1.95"
    Rear tire KENDA SMALL BLOCK EIGHT, 24" x 1.95"
    Fender -
    Rack -
    Light -
    Weight 10.9 kg (size M)
    Weight frameset 1640 g frame (size XXS, incl. hanger)
    810 g fork (300 mm steerer)
    Maximum rider weight 90 kg incl. luggage
    ASTM riding condition 2

    BB Standard BSA - 68 mm shell width
    Headset Standard (S.H.I.S.) EC34 / 28.6 | EC34 / 30
    Fork Max Tire Clearance w/o fender 24'' x 2.1"
    Frame Max Tire Clearance w/o fender 24'' x 2.1''
    Maximum chainring clearance 1x 36 T with 48 mm chainline
    Maximum chainring clearance 2x 42 / 28 T with 49.5 mm chainline
    Seat Post Diameter 27.2 mm
    Seat clamp diameter 31.8 mm
    Brake mount front PM
    Brake mount rear FM
    Maximum rotor clearance front 180 mm
    Maximum rotor clearance rear 160 mm
    Front through axle -
    Rear through axle -
    Derailleur hanger BT-DH-019
    ISO testing standard MTB
    Crankarm 152 mm
    Q Factor 158 mm
    BCD crank 104 mm
    Chainline 45 mm
    Spoke length front wheel 233 mm, 234 mm
    Spoke length rear wheel 234 mm, 232 mm
    Spoke count (front / rear) 32 / 32
    ERD tba
    Front hub PCD 58 mm
    Rear hub PCD 58 mm
    Front hub flange distance / offset 56.5 mm center to center / 6.6 mm
    Rear hub flange distance / offset 51 mm center to center / 8.8 mm
    Stem Length 60 mm
    Stem angle 17°
    Headset Spacers 1 x 10 mm, 2 x 5 mm
    Seat post offset 24
    Seat post length 400

    Bike Size XXS
    Wheel size 24''
    Seat Tube Length 330
    Horizontal TT length 474
    Seat Angle 73.5°
    Head Angle 71.5°
    Headtube Length 100
    BB Drop 30
    Chainstay Length 390
    Fork Offset 45
    Trail 55
    Wheelbase Length 919
    Standover 666
    Reach 326
    Stack 498
    Front Center 531
    Axle to Crown 400
    Minimum rider height * 1350
    Maximum rider height * 1550

    * Our bike size recommendation generally represents a rough guideline for quickly narrowing down the sizes from which to choose based on the body height. Bike fitting is a complex topic and other measurements and factors have to be accounted for as well. Since no two human bodys are exactly the same it is not possible to give a 100% correct advice for everyone. Therefore BOMBTRACK cannot guarantee for the stated recommendations to be correct for every individual customer. The best way to work out the correct size is to consult a local BOMBTRACK dealer or a professional bike fitter and have them determine the needed size.


    Bike Size XXS
    Handlebar type Dropbar
    Width (drops) 380
    Width (barends) 520
    Reach 85
    Flare 30°
    Backsweep -
    Drop 115
    Upsweep -
    Rise -

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