Big Brake Kit with 2 Piece Disc and Rotor I MINI R5X

Developed for drivers demanding motorsport level braking performance, this Big Brake Kit combines proven AP Racing calipers, lightweight two piece discs and carefully specified supporting components. The result is a complete braking package engineered to deliver exceptional stopping power, heat management, pedal consistency and durability under demanding road and track use.

At the heart of the system is a pair of AP Racing 4 piston brake calipers. Their rigid construction and multi piston design provide powerful, controlled clamping force across the brake pad, delivering the stopping performance and modulation required when braking repeatedly from high speed.

Lightweight Two Piece Disc Assembly

Rather than using a conventional one piece brake disc, the kit features a two piece disc and bell assembly designed to reduce unnecessary rotating and unsprung mass.

The bells are precision manufactured from 7075 aluminium, selected for its exceptional strength to weight ratio. This allows the assembly to retain the strength required in a high performance braking application while keeping weight extremely low.

Each aluminium bell is paired with a grooved and internally vented cast iron friction disc. Internal ventilation helps control temperature during repeated heavy braking, while the grooved braking surface helps maintain consistent interaction between the pad and disc.

Brake Pads

To make full use of the AP Racing calipers and two piece discs, the kit is supplied with Mintex F2R race compound brake pads.

F2R is a dedicated performance friction material selected for its strong initial bite, high temperature capability and consistent braking performance under repeated heavy use. This makes it particularly well suited to track driving, where maintaining predictable friction characteristics as brake temperatures rise is essential.

Combined with the rigid AP Racing caliper, the F2R pads provide the braking response, modulation and confidence expected from a serious motorsport braking system.

Performance should not come at the expense of the driving experience, which is why the kit also includes anti rattle plates for the brake pads.

Race brake pads and performance calipers can naturally allow some pad movement, particularly at lower speeds and over uneven road surfaces. The anti rattle plates help control this movement, reducing the unwanted knocks, rattles and bangs that can otherwise accompany a motorsport style braking setup.

It is a relatively small detail that makes a significant difference. Less unwanted brake noise means the driver can concentrate on the car and enjoy the drive rather than wondering whether every knock or rattle is something that needs attention.

Caliper Mounting Brackets

The caliper mounting brackets are manufactured from steel and zinc passivated for corrosion protection.

Steel has been deliberately selected for this critical component because of its excellent strength and fatigue characteristics. With the bracket repeatedly subjected to substantial braking loads and thermal cycles, material selection is more important than simply pursuing the lowest possible weight.

The result is a robust mounting solution engineered to maintain accurate caliper location and withstand the repeated loads generated during hard braking.

Brake Lines

A high performance braking system is only as good as the driver's connection to it.

The kit therefore includes Goodridge braided brake hoses, helping to reduce hose expansion under pressure compared with conventional rubber brake lines. This contributes towards a firmer, more consistent pedal and improved feedback when braking hard.

Brake Fluid

High temperature DOT 5.1 brake fluid is also supplied to complete the package.

Its high temperature capability provides additional resistance to fluid boiling during demanding use while retaining a sensible service interval for a performance vehicle. This makes it an excellent choice for a braking system intended to deliver serious performance without introducing unnecessarily short fluid maintenance intervals.

Key Features

• Motorsport level big brake conversion
• AP Racing 4 piston calipers
• Mintex F2R race compound brake pads
• Strong initial bite and excellent high temperature performance
• Anti rattle brake pad plates included
• Reduced pad movement, knocking and unwanted brake noise
• Lightweight two piece brake disc and bell construction
• Precision machined 7075 aluminium bells
• Excellent strength to weight ratio
• Grooved cast iron friction discs
• Internally vented discs for effective heat management
• Steel caliper mounting brackets for excellent strength and fatigue resistance
• Zinc passivated brackets for corrosion protection
• Goodridge braided brake hoses
• Improved pedal consistency and feedback
• High temperature DOT 5.1 brake fluid included
• Designed to withstand repeated high energy braking
• Engineered for serious performance road and track applications

A Complete Motorsport Level Braking Package

Every component has been selected to perform a specific role within the complete braking system. Lightweight 7075 aluminium bells reduce rotating and unsprung mass, vented cast iron discs manage heat, steel brackets provide dependable mounting strength, Goodridge hoses improve pedal consistency and DOT 5.1 fluid helps maintain hydraulic performance.

Bringing everything together are the AP Racing 4 piston calipers and Mintex F2R race pads, providing the clamping force, friction performance and temperature capability required when braking hard, repeatedly.

Even the smaller details have been considered. The inclusion of anti rattle plates helps tame the unwanted noises often associated with motorsport braking hardware, making the car considerably more enjoyable to drive on the road without compromising the performance available when it matters.

The result is a properly engineered braking package designed to deliver huge stopping power, consistent pedal feel and confidence lap after lap, while remaining enjoyable on the road between track sessions.

G54 products are designed, engineered and manufactured to be used. The warranty is kept simple: if a G54 product develops a genuine manufacturing or material fault, G54 will put it right.

Lifetime Warranty

Unless stated otherwise, G54 products are covered by a lifetime warranty to the original purchaser against defects in materials or manufacture.

The lifetime warranty applies for as long as the original purchaser owns the product and is not transferable.

To make a warranty claim, the original purchaser must provide:

• Proof of purchase or original sales receipt
• Valid identification confirming they are the original purchaser

Moving Components

Components such as bearings are covered for 2 years from the original date of purchase for the original purchaser.

Consumable Components

Consumable items are covered against manufacturing defects for 12 months from the original date of purchase.

Consumable components and moving parts are not covered for normal wear and tear.

Installation

G54 products must be installed correctly by a competent person using appropriate tools and suitable installation procedures.

Where applicable, vehicle manufacturer procedures and torque specifications should be followed unless stated.

Damage resulting from incorrect installation is not covered by the G54 warranty.

What Isn't Covered?

The G54 warranty does not cover:

• Normal wear and tear
• Incorrect or improper installation
• Misuse, abuse or accidental damage
• Damage caused by another faulty vehicle component
• Use on a vehicle or application for which the product was not designed
• Unauthorised modification or alteration of the G54 product
• Cosmetic damage occurring through normal use
• Corrosion or damage caused by inappropriate chemicals, cleaning products or environmental contamination

Normal use of a G54 performance component for its intended purpose does not invalidate the warranty.

Making a Claim

Warranty claims should initially be made through the retailer from which the G54 product was purchased.

Proof of purchase, identification and photographs or other information reasonably required to assess the fault may be requested.

G54 may require the product to be returned for inspection before a warranty claim can be approved.

Where a product is confirmed to have failed as a result of a manufacturing or material defect, G54 will, at its discretion, repair or replace the affected product.

Unless otherwise agreed, this voluntary warranty covers the G54 product itself and does not include installation labour, vehicle recovery, vehicle hire or other associated costs, except where such costs must be covered by law.

Statutory Rights

The G54 No Nonsense Warranty is provided in addition to the purchaser's statutory rights and does not affect those rights.