AP Racing/Track Formula Pro 5000R Pad Anti-Knock Kit – CP9440, CP9441, CP9446, CP9448, CP9449, CP9450 & CP9451 Calipers

Eliminate unwanted brake pad movement and enjoy a quieter, more refined driving experience with the AP Racing Pro 5000R Pad Anti-Knock Kit. Specifically designed for selected AP Racing Pro 5000R Series 4-Piston Calipers, this simple yet highly effective upgrade significantly reduces brake pad knock, rattle, and movement within the caliper body.

Whether you're driving on the road, attending track days, or competing in motorsport, this kit helps improve brake system refinement while maintaining the exceptional braking performance AP Racing calipers are known for.

Stop Brake Pad Knock & Rattle

Brake pad knock is a common characteristic of high-performance brake systems and occurs when the brake pads move within the caliper over bumps, during cornering, or under braking. While harmless, the resulting knocking or rattling noise can be distracting and often mistaken for a brake system fault.

The AP Racing Pad Anti-Knock Kit reduces excess clearance between the brake pad and caliper body, helping to minimise pad movement and eliminate unwanted noise.

Benefits of the Anti-Knock Kit

✔ Significantly reduces brake pad knock and rattle
✔ Improves overall brake system refinement
✔ Maintains consistent pad positioning
✔ Enhances driver confidence and comfort
✔ No impact on braking performance or pad wear
✔ Ideal for road, track day, and motorsport vehicles

Compatible AP Racing Calipers

This anti-knock kit is designed for the following AP Racing Pro 5000R 4-Piston Calipers:

• AP Racing CP9440

• AP Racing CP9441

• AP Racing CP9446

• AP Racing CP9448

• AP Racing CP9449

• AP Racing CP9450

• AP Racing CP9451

Important Fitment Note

This kit is NOT compatible with AP Racing CP9444 or CP9445 calipers.

Please verify your caliper part number before ordering.

What's Included?

Each kit contains:

• Spring clips for both calipers

• Complete hardware required for installation on a pair of calipers

One kit covers both brake calipers.

For CP94XX series calipers, only the spring clips are required, with no additional blocks necessary.

Quick & Easy Installation

Installation is straightforward and can typically be completed in just a few minutes per caliper.

Recommended Installation Process

1. Remove the brake caliper.

2. Install the anti-knock spring clips.

3. Refit the brake pads.

4. Reinstall the caliper.

Once installed, the kit provides a long-term solution for reducing brake pad movement and associated noise.

Ideal for Road & Track Applications

This AP Racing anti-knock kit is perfect for:

• Performance Road Cars

• Track Day Cars

• Time Attack Builds

• Circuit Racing Vehicles

• Fast Road Applications

• Motorsport Enthusiasts Seeking Improved Refinement

Many drivers running AP Racing Pro 5000R brake kits notice an immediate reduction in brake pad noise after installation.

Genuine Solution for AP Racing Brake Systems

Designed specifically around AP Racing caliper tolerances, this kit provides an effective solution without introducing excessive preload or affecting pad operation.

Important Information

This kit is designed solely to reduce brake pad knock and pad-related rattling noises.

It will not eliminate floating brake disc noise, rotor chatter, or bobbin-related movement. If you are experiencing noise from a floating disc assembly, please contact us with your AP Racing disc specifications for further assistance.

Why Choose the AP Racing Pro 5000R Pad Anti-Knock Kit?

If you're looking for a simple, cost-effective way to reduce brake pad movement and eliminate annoying brake rattle from your AP Racing brake system, this anti-knock kit is the ideal upgrade. Easy to install and highly effective, it delivers a quieter and more confidence-inspiring driving experience while preserving the performance of your AP Racing braking system.

Upgrade your AP Racing Pro 5000R calipers today and enjoy smoother, quieter braking on road and track.