OG4A Orange

▼ Description

 Why choose the Wildcat Mini BMX OG4A

• The only Mini BMX in the world with disc brakes

• Lighter wheels than traditional cart-style setups

• Strong components designed for jumps and park riding

• Built to handle real use, not just cruising

This is not a toy bike.

It is a performance Mini BMX.

Built to ride hard

The OG4A is designed for skate parks, pump tracks, and BMX tracks.

Key features include:

• Cro-Moly handlebars for strength and control

• One-piece heat-forged crank for durability

• High-pressure tyre for speed and grip

• CNC aluminium hubs with fibre-infused nylon cross-wheel rims

The result is a bike that feels solid under pressure and responsive in the air.

Lighter where it matters

Most Mini BMX bikes use heavy cart wheels.

That weight slows riders down and limits progression.

Wildcat wheels remove unnecessary weight without sacrificing strength.

• Faster acceleration

• Easier handling

• Better control for younger riders

Your child will feel the difference on the first ride.

Gearing that works

Every Wildcat Mini BMX uses the custom 9-tooth Wildcat cassette hub.

This delivers:

• Smooth power transfer

• Fast and precise engagement

• A loud, confident sound kids love

The gearing is tuned for park and track riding, not casual pedalling.

Rider weight guidance

• Recommended rider weight up to 80kg

• Tested successfully up to 100kg

For riders over 80kg who ride aggressively, choose a model with a 3-piece crank.

Where it can be used

• Skate parks

• BMX tracks

• Competition use

• Local Parks

• Around home 

Road use requires a bell and reflectors.

Shipping

Free shipping on all Mini BMX bikes across Australia. 

◄ Specifications

Axle: 10mm, chromoly steel, CNC

BB: USA type

Brake: Removable disc brake

Chain: Traditional KMC Z410

Chain wheel: 28T Forged Aluminium

Crank: One Piece heated forged hi-ten steel arms. Ball retainer L=89mm

Driver: Cassette 9T, full CNC

Frame: Hi-ten steel, casting dropout

Fork: Threadless, tapered legs, 10pcs head parts

Handlebars: 2 piece small size (650x200mm / 720g) 4130 chromoly steel 

Rims: No 100A model, integrated cross wheel, Nylon rim + CNC Aluminium core

Seat: Pivotal, Kevlar coated, anodised aluminium seat post

Stem: Premium 6061 aluminium, Top load

Top tube: 13.27"

Seat tube: 7.3"

Tyre: Pro street, 45 psi, 10"

Weight rating: 80kg (tested to 100kg) on 1 piece crank bikes (120kg on 3 piece cranks)

Weight: 8.7kg (including brake)

◄Support

Assembly Instructions

Download instructions here

Bikes are 85% assembled.

Required tools for assembly: 4, 5 & 6mm Allen key for seat and handle bars, 15mm spanner for pedals

Warranty

12 months warranty on components and a limited lifetime warranty on the frame, you can shred with peace of mind.

Spare parts available separately.

See Warranty section for full details and maintenance

Wildcat Mini BMX Bike