04-11 Rx8 Side Seal Set (N3H1-11-C11C)

We prefer the side seals Mazda offers which are longer, and require hand fitting so that you can attain a more accurate fit between side seal and corner seal which allows for maximum compression and no blow by. Every rotor is different so it is better to get them longer to custom fit each slot, these are also cheaper than the pre-cut letter versions.

You will need to remove approximately 0.05" (1.28mm) from each side seal.

Consider upgrading these to Cryo Treated Side Seals to allow for better more uniform heat dissipation, because these seals ride directly over the extremely hot exhaust port inside the renesis engine.

 Why cryogenic Treatment

Metals Last up to 600% Longer

Cryogenic processing extends the life of metal, up to 600% longer.

Save Money

Our process extends the life of your metals, which means you spend less on maintenance or repairs and keep that cash for something else.

Reduce Metal Stress and Fatigue

We freeze at-risk metals to -300°F, causing structural changes at the molecular level to make your wearable parts more resilient. This helps fight corrosion, breakage, and wear – reducing unnecessary stress on your metal parts.