12-inch Performance Disc Rotor (3.0t) – 5S Landcruiser

Part No: CM475-3T-5S Category: Tags: , ,


The Couplemate™ 12-inch Performance Rotor is available in a 5S Landcruiser stud pattern to suit 3.0t boat trailer marine axles. Designed for safe and secure braking and includes M14x1.5 wheel nuts.

Cross-drilled pad surface expels road debris with greater efficiency.
Surface coated with zinc Electro-plating to provide superior rust protection.
High-quality hub made from cast iron featuring metric studs to suit mags and steelies.

Officially licensed with the Australia Made Campaign.

3t Australian Marine Bearing Kit - Seal 494013

High-quality AU 3.0t bearing kit for caravans, campers, and trailers. Each kit includes one of:

  • 30210J inner bearing
  • 29749/10 outer bearing
  • 76mm grease/dust cap
  • Marine or standard (electric) seal

Kits sold individually (per hub).

Couplemate accepts PayPal, Visa and Mastercard.

12-inch Performance Disc Rotor | Suits 5S Landcruiser Trailer Wheels (3.0t)

The Couplemate™ CM475-3T-5S is a cast iron 12-inch integral rotor to suit the 5S Landcruiser PCD (150mm) and Australian 3.0t bearings.

Inspired by high performance motor vehicle rotors, the 12″ Performance disc features a cross-drilled design thought to provide advanced heat dissipation, minimise the effects of brake pad fade, as well as expel road debris with greater efficiency.

Made in Australia from high-quality cast iron by Couplemate™ Trailer Parts.

Disc Specifications

Couplemate 12-inch Performance Rotors are supplied with wheel studs and nuts (M12x1.5).

  • Diameter: 300mm (12-inch)
  • Coating: Electro-plated (zinc)
  • Stud Pattern: 5S Landcruiser
  • Thread: 12mm
  • Pitch: 1.5

N.B. This disc will suit Australian-style calipers (15mm pad spacing) such as ALKO and Trojan.

Trailer Wheel Requirements

  • Minimum Wheel Bore: 105mm
  • PCD: 5 x 150mm (i.e. 5S Landcruiser)

Bearing Requirements

  • Inner Bearing: 30210J
  • Outer Bearing: 29749/10

Bearings are not included with the rotor and are available for purchase here: Japanese NSK Marine 2.25t Bearing Kit

What are the Benefits of a Performance Rotor?

Superior Boat Trailer Brake Hub

Couplemate™ engineers designed our Performance Rotors with a specific V-shape cross-drill.

The drill pattern evolved from the automotive racing industry wherein vehicle brakes, as well as confidence in the brakes, are of utmost importance. Cross-drilled disc faces are reported to expel gasses, water, and general road debris with better efficiency.

This manifests as several braking benefits:

  • Reduced dirt and scum on disc pads to maximise friction.
  • Increased airflow to quicken brake pad cooling cycle.
  • A cleaner disc pad allows more effective braking

Couplemate Performance Rotors provide Australians with a safe and superior disc brake hub. 

Superior Corrosion Resistance & Durability

Electro-plating is a type of zinc coating that provides trailer hubs with better corrosion resistance (i.e. rust from marine applications).

It is commonly used for other types of components in the automotive, construction, and appliance industries because it offers a balance of corrosion resistance, durability, and cost effectiveness.

Superior Australian-Made Quality

Couplemate™ boat rotor hubs are made in Australia: designed, casted, machined, and coated domestically. 

Performance rotors are cast from high-quality grey iron which provides superior strength and durability. Reliable disc brakes are an important of road safety. 

Installation & Safety Guidelines

Please check the condition of your boat trailer axle and trailer bearings prior to use. A wear-free axle bearing journal and a fresh set of bearings will maximise your rotor efficiency and lifespan.

Couplemate™ strongly advises using Japanese tapered roller bearings with marine-grade grease (not clay-based). Moreover, you’ll want to make sure that your disc brake pads are in good condition.

Ensure wheel nuts are tight upon installation. Nuts should be checked and re-tightened after the first trip and every 5000km/6 months thereafter.

Additional information

Weight15 kg
Dimensions35 × 35 × 20 cm
Centre Bore




Stud Pattern


Cast Iron (AS1830)

Hub Size




NSK Bearing #

15123/245, 29749/10

Our Service Lifetime Warranty

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.

Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.

Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.

60-Day Returns

After 60 years of experience, we know that life has its unpredictable moments.

All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.

You can view our full policy for change-of-mind returns here.


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