MCD OCTOX · 1:8 GT-E
The OCTOX Guide
Engineering, setup and maintenance – racing know-how first-hand.
Introduction
Designed electric from the ground up
The OCTOX is not a converted nitro car. MCD Racing developed it as a pure electric chassis for the 1:8 GT class – with clever shared parts, a ball-cup drivetrain all round and a suspension that can be adjusted in almost every direction.
It comes in two versions: the OCTOX Pro with composite suspension parts and the OCTOX Ultimate with aluminium. Chassis, drivetrain and adjustment options are the same on both.
Engineering
Engineering you can feel on track
For every detail: what it is – and what it does for you as a driver. Tip: click images to enlarge.
Shocks with high-pressure cell
An internal high-pressure cell and a floating piston compensate for the shaft volume.
Your benefit: The oil doesn't foam even over a long run – damping stays consistent.
Ball-cup drivetrain all round
All drive shafts run in the ball-cup system – from the centre diff to the wheels.
Your benefit: A consistently smooth, free-running drivetrain.
3-ball drive shafts
Three balls transfer the power. Steel on the OCTOX Pro, aluminium on the OCTOX Ultimate.
Your benefit: Less friction at full suspension travel and less wear.
Motor left or right
The motor can be mounted on either side; the steering setup is adapted accordingly.
Your benefit: You can tune the weight distribution to the track and your driving style.
Smart Design
Fewer parts in your pit box
Many parts fit left and right, some even front and rear. That saves money, you need to stock fewer spares – and when repairing between two heats you simply grab the right part.
Setup
The right setup for every track
Almost every suspension geometry on the OCTOX is adjustable – usually without special parts, just by rotating, repositioning or adding spacers. All adjustments are available on both the OCTOX Pro and the OCTOX Ultimate.
Front roll centre
4 positions
Bidirectional part: simply rotate it 180°.
Rear roll centre
6 positions
Bidirectional part: simply rotate it 180°.
Squat / Anti-Squat
−3° to +3°
Rear anti-squat gives more traction under acceleration.
Anti-Dive / Kickup
−3° to +3°
Anti-dive prevents the front from diving under braking on high-grip tracks.
Rear toe-in
0–3°
Via inserts. For toe-out, simply swap the left and right hubs.
Camber
front & rear
Rear via screws. Front: spacers on the OCTOX Ultimate, adjustment screw on the OCTOX Pro.
Wheelbase
Spacers
Easily adjusted with spacers (bushings).
Caster
Y-Clips
Quickly adjusted with Y-clips.
Maintenance
Quick wrenching between heats
Modular design
The front and rear axles come off as complete units. Instead of stripping half the car, you only work on the assembly you need.
Steering at zero
A centering tool locks the steering at zero. That lets you set the toe precisely – even under time pressure in the pits.
Pro vs. Ultimate
Which OCTOX is right for you?
Chassis, drivetrain, shocks and all adjustment options are the same. The difference is in the suspension: composite on the OCTOX Pro, aluminium on the OCTOX Ultimate.
OCTOX PRO · COMPOSITE
OCTOX ULTIMATE · ALUMINIUM
| PART | OCTOX PRO | OCTOX ULTIMATE |
|---|---|---|
| Front upper & lower wishbones | Composite | Aluminium |
| Rear lower wishbones | Composite | Aluminium |
| Front & rear hubs | Composite | Aluminium |
| Front lower wishbone ball joint | 4 mm steel ball stud | Ball joint with double-direction thrust bearing |
| Front camber adjustment | Adjustment screw | Spacers |
| Turnbuckles & centre drive shafts | Steel | Alloy |
| Price | €895 | €1,395 |
OCTOX ULTIMATE ONLY
Thrust bearing ball joint
The front lower wishbones use a purpose-built ball joint with a double-direction thrust bearing. According to MCD, it prevents the binding that can occur with conventional ball joints – making the steering especially smooth and direct.
OCTOX Pro – for you if …
- you're getting into the 1:8 GT-E class – and still want a competitive car.
- you'd rather spend your budget on electronics, tyres and track time.
- you want to upgrade to alloy step by step later on.
OCTOX Ultimate – for you if …
- you race regularly and compete in championships.
- you want a more robust suspension that handles contact better.
- You want the flagship of the OCTOX range – fully equipped with alloy from the factory.
SVEN'S SETUP TIP
“I run the OCTOX Ultimate myself – but with the composite rear lower wishbones from the OCTOX Pro. You don't have to choose all or nothing: parts from the OCTOX Pro and OCTOX Ultimate can be combined.”
Support
We've got your back
Spare parts in stock
Fast shipping from Germany.
Parts Finder
Click a part in the exploded view and order it directly.
Track Support
Parts and help right at the track. View race calendar
Personal advice
Setup questions? Get in touch.
FAQ
Frequently asked questions
Can you race the OCTOX Pro?
Yes. The OCTOX Pro is not only a way into the class but also suited for competition. Chassis, drivetrain, shocks and all setup options are identical to the OCTOX Ultimate.
Can I upgrade the OCTOX Pro to alloy?
Yes. You can upgrade the OCTOX Pro with the alloy parts of the OCTOX Ultimate one by one – for example starting with the parts that take the most hits.
Is alloy always better than composite?
Not necessarily. Alloy is more robust; according to MCD, composite is more flexible and absorbs impacts better on bumpy surfaces. Many drivers combine both – Sven, for example, runs his OCTOX Ultimate with composite rear lower wishbones.
Where can I find exploded views and setups?
In the Parts Finder on the home page and in the downloads section.
Your OCTOX
Ready for the track?
OCTOX GT-E Pro
€895
Your way into the class – and competitive. Upgradable to alloy at any time.
VIEW OCTOX PROOCTOX GT-E Ultimate
€1,395
The flagship of the OCTOX range – fully equipped with alloy from the factory.
VIEW OCTOX ULTIMATE