| 
 Product detailed specification  | 
|
| 
 Bore size  | 
 81.00mm  | 
| 
 Stroke  | 
 92.80mm  | 
| 
 JE Pistons compression ratio (CR)  | 
 9.0:1  | 
| 
 OEM compression ratio (CR)  | 
 10.0:1  | 
| 
 Dome volume (CC)  | 
 -3.30cm3  | 
| 
 Compression height (CH)  | 
 30.70mm  | 
| 
 Pin diameter  | 
 21mm  | 
| 
 Features  | 
 Accepts Turbo and Nitrous; Round skirt  | 
| 
 Fits for  | 
 Audi S4, RS4, A6 – 2.7 30V  | 
JE’s patented Perfect Skirt coating makes piston slap, false knock, and cold-start wear a thing of the past.
For the first time ever, 2618-alloy pistons can be installed with piston-to-wall clearances near that of an OEM piston!
