04-11 Rx8 Cryogenically Treated Apex Seal & Spring Kit (ARE131-C)
Only the apex seals are cryogenically treated.
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.
TIP
** Check the rotor with a feeler gauge to ensure that the tolerance between apex seal and groove are correct. The second picture is an example of a bad rotor that needs to be replaced or milled to 3mm if not already done so.
Groove Specifications:
0.002 - 0.0039 inches (Maximum of 0.0059 inches)
0.051 - 0.101mm (Maximum of 0.15mm)
See below for apex seal specifications.
See below for apex seal specifications.










