Big brake system KIT rear axle Audi TT VW Tiguan Porsche Cayenne 4-piston caliper Audi TT handbrake caliper 356x22 brake disc with parts certificate - Colour brake caliper: red with Epytec logo

For this brake caliper adapter, we deliberately use the Porsche Cayenne brake calipers with the part numbers 955.352.421 / 955.352.422, as our type approval was created precisely for these brake calipers. An additional appraisal for the Panamera brake calipers would be very costly, although the braking performance of the calipers is very similar and the differences are mainly in the appearance.

Another point is the construction of the adapter: The Cayenne brake caliper can be adapted much more sensibly and cost-effectively for this application. A significantly stronger base material would be required for the Panamera brake caliper, resulting in more milling effort and making the adapter correspondingly more expensive.

Additionally, there is a problem with the Panamera brake calipers concerning the assignment: Under the part numbers 970.352.425 / 970.352.426, different versions are in circulation – once for 330 mm and once for 350 mm brake discs on the rear axle. Even though the part numbers can be the same, the calipers differ in height or in the machined contact surface. This quickly leads to confusion and compatibility issues.

For these reasons, we offer this kit exclusively for the specified Porsche Cayenne brake calipers. This keeps the combination technically unambiguous, type-approved, and as uncomplicated as possible for you.

We can paint your brake calipers in almost all common RAL colors. However, an exception is RAL fluorescent colors (neon/fluorescent colors) – we cannot offer these for brake caliper painting.

The reason: fluorescent colors work technically different from normal RAL colors (they require special pigments/layer structures) and are significantly more sensitive in the "brake" application area. For a consistently clean, robust surface, we therefore rely on paint structures that have proven themselves in the brake area – and fluorescent RAL is excluded here.

We do not offer these RAL fluorescent colors (examples)

• RAL 1026 Fluorescent Yellow

• RAL 2005 Fluorescent Orange

• RAL 2007 Fluorescent Light Orange

• RAL 3024 Fluorescent Red

• RAL 3026 Fluorescent Light Red

• RAL 6038 Fluorescent Green

Tip: If you want a "neon look," we often find a very similar non-fluorescent RAL alternative that is visually close and much more suitable for brake calipers.

• We recommend tightening the sealing nipples on the brake caliper with 20 Nm.

Why is this important?

• The correct torque ensures a secure seal. A too loose fit can lead to leaks, whereas over-tightening can damage threads or components.

Should a torque wrench be used?

• Yes, for precise and safe installation, we recommend using a torque wrench.

Should anything be checked after installation?

• Yes, the sealing nipple should be checked for tight fit and sealing afterward.

If your brake caliper is not exactly centered over the brake disc, in most cases it is not a problem. Depending on the vehicle, model year, and mileage, axle tolerances can occur – and this even in newer vehicles.

The most important thing is:
👉 The brake caliper must have sufficient clearance on the left and right to the brake disc so that nothing rubs or permanently touches it.

Many brake calipers also have locking bolts. It may happen that:

• there is very little clearance on one side or the bolt lightly touches

• while on the other side there is more play

This is generally not critical.

🔧 This is how you proceed:

1. Install brake pads:
   First check if the brake pads can be inserted cleanly and without resistance on both sides.

2. If everything fits:
   If installation is possible without problems, you can simply gently push back the locking bolts – this usually resolves the issue.

3. If it jams:
   If the brake pads cannot be installed, or only with difficulty, on one side, action is required.

   In this case, you can:

   • slightly shim the adapter with suitable bushings to adjust the brake caliper

   • or – depending on the situation – slightly mill the adapter so that the brake caliper is correctly centered again

👉 The goal is always that the brake caliper is evenly aligned with the brake disc and the brake pads are seated freely and cleanly.