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Seal Cycles

The everyday all-rounder

New Vortex 24" Kids Mountain Bike - Disc Brakes, Lightweight Alloy Frame

New Vortex 24" Kids Mountain Bike - Disc Brakes, Lightweight Alloy Frame

A lightweight, capable step-up bike for school runs, park paths and bigger family weekends.

12.6 kg Shimano 8-speed Tektro disc brakes
$359.00 AUD
$499.00 AUD $359.00 AUD
On Sale Sold out
Taxes included. Shipping calculated at checkout.
12.6 kgLight alloy frame

Easier for kids to lift, steer and pedal on their own, from the driveway to the top of the hill.

Shimano 8-speedAn easy gear for hills

The lowest gear turns the wheel once for every turn of the pedals, so climbs feel easier and kids keep riding instead of walking the bike.

Tektro disc brakesMore consistent stopping

Compared with V-brakes, mechanical disc brakes brake more consistently in wet conditions and need less hand strength, so small hands stop with confidence.

85% assembledStraightforward final assembly

Most of the bike is built and adjusted before it ships, so the final steps are straightforward.

Similar disc-brake 24″ bikes sell for $479–$599 elsewhere. See the comparison ↓
Age Group
Color

Pre-order · ships or pick up from late November

View full details

THE NEW 2026 SEAL Vortex 24" Kids MTB

The perfect step-up for young riders ready to explore more. With a lightweight alloy frame, 8-speed Shimano gearing, and powerful disc brakes, the Vortex 24" brings real mountain bike performance to school commutes, weekend park rides, and family adventures.

24″ bikes.
Side by side.

Shopping for a 24″ kids’ bike? Compare four popular bikes, then explore the details that matter for your child.

A$369–A$599 · Cheapest first

Look closer.

Tap a button below ↓

Price, brakes, frame, gears, fork and published complete bike weight for four 24 inch bikes. Select a feature button in the first column to read the explanation.
24 inch
wheels		 Seal CyclesVortex
24$359		 99 BikesPedal
Crush$399*		 ReidTract Jr
24$479.99		 99 BikesSilverback
Spyke 24$599*
Mech.
disc		V‑brakeMech.
disc		Mech.
disc
AlloyAlloyAlloyAlloy
8777
Susp.
fork		Susp.
fork		Susp.
fork		Susp.
fork
Weight12.6 kg14.9 kg——
Weights as published. — Not listed on the selected page.

Fit comes first. Check height, inseam and brake reach. The same wheel size can fit differently across bikes.

Sources & the small print

Official pages checked 29 October 2026. Prices in AUD, excluding delivery. Prices, offers and specifications may change.

*99 Bikes prices shown are advertised Club prices and may require Club 99 membership.

The Pedal comparison uses the pink Crush 24 listing, with steel coil suspension and 1 × 7 gearing. The Reid Tract Jr 24 has Jak 5 mechanical disc brakes, a 6061 alloy frame and Shimano Tourney 7-speed gearing. The Silverback comparison uses the Spyke 24 Xenon Grey listing, with mechanical disc brakes (160 mm rotors), a Zoom steel suspension fork with 50 mm travel and Shimano 7-speed gearing.

Susp. fork means suspension fork. Published fork details: Vortex, Zoom 565D coil with 50 mm travel; Pedal Crush, steel coil suspension with travel under 100 mm; Reid Tract Jr, suspension with 50 mm travel; Silverback Spyke, Zoom steel suspension with 50 mm travel. Coil refers to a spring. Travel is the distance the fork can compress.

  • 99 Bikes · Silverback Spyke 24 Xenon Grey
  • Seal Cycles · Vortex 24
  • 99 Bikes · Pedal Crush 24
  • Reid · Tract Jr 24
  • 99 Bikes · Black Friday terms
  • REI · How V‑brakes and disc brakes work

Vortex 24 is currently on pre-order, shipping from late November.

This guide is published by Seal Cycles and includes our Vortex 24. No comparative ride or braking tests have been carried out for this table.

What You're Getting

Everything your kid needs, nothing they don't.

24"

Wheel Size

Right size for 8-11 year olds

8-Speed

Shimano Gears

Enough for hills and flats

Disc

Mechanical Brakes

More consistent braking in wet conditions

Light

Aluminum Frame

Easy for kids to handle

Smooth

Front Suspension

50mm travel for comfort

Ready

Kickstand Included

85% assembled, 30min setup

No big brand. Just big value.

You’re paying for performance, not a logo.

Full Technical Specifications

Built for kids who want more than just a basic bike

Component Specification
Season2026
Wheel Size24"
Frame6061 Aluminium Alloy
ForkZoom 565D Coil; Travel: 50mm
Front Travel50mm
GroupsetSHIMANO TOURNEY
Rear Gears8 Speed
Front GearsSingle
BrakesTEKTRO MD-M280 Mechanical Disc, Rotor: 160mm
Brake TypeMechanical Disc Brake
ShiftersSHIMANO SL-M315-8R
CassetteShimano CS-HG200-8, 12-32T
CranksetPROWHEEL PRO-V32PP 32T×152mm
ChainKMC Z8.1 1/2"×3/32"×100L
Rear DerailleurShimano TOURNEY TX800 8-speed
HandlebarAlloy, Dia: 22.2/25.4mm, 580mm, 20° Backsweep, 30mm Rise, Sandblasted Black
StemAlloy Stem, Ext: 40mm, Steerer Dia: 28.6mm, Height: 35mm
GripsBlack TPR Grips (ST-07)
HeadsetGineyea G-068D
Bottom BracketNECO B910 Sealed Bearing
PedalsFP-806 Plastic Pedals
RimsYKL-D23 24"×1.5" Double-Wall Alloy Rim, 14G×32H, H:21mm
TyresMTB 24"×2.10
TubesMTB 24"×2.10 A/V
SaddleBOKSN BKS-1101
SeatpostAlloy 31.6×300mm×2.0T
HubsFront/Rear: SF-A217-QF Alloy Disc Hub, QR, O.L.D 100mm/135mm
KickstandYES - Included
Repair Tool KitNot Included

Quality components, simple pricing. That's the SEAL promise.

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