2018+ RS3 TTRS 2.5L
Piston Features:
- 3D milling on piston crowns for ready to install finish
- Offset pins for quiet operation
- Moly skirt coating for friction loss and skirt wear protection
- Side gas ports for better ring seal
- Ratios figured for 83.0mm x .036 head gasket @ 8.661 Deck Height
- Top ring down dimension: .240"
- Premium 8620 .180W wrist pins chamfered for roundwire locks included
- Premium 1.0mm x 1.2mm x 2.8mm ring package included
- Oversized valve pockets - for larger than stock valve sizes
- Valve pocket depth: 0.110" intake and 0.095" exhaust
- 2618 material for High HP/Boost applications
Item No
|
Bore
|
Stroke
|
Rod
|
Comp Height
|
Pin
|
Cc
|
Compression Ratio
|
---|---|---|---|---|---|---|---|
38250-5 | 82.5mm | 92.8mm | 5.669 | 1.165 | .905 x 2.250 | -6.5cc | 9.5 |
38251-5 | 83.0mm | 92.8mm | 5.669 | 1.165 | .905 x 2.250 | -6.5cc | 9.6 |