Capricorn
Utilising the very latest in material developments, advancements in design and the latest in machining technology we help our Porsche customers, the leaders in motorsport and automotive to stay ahead of their competition.

SET
Fits:
Porsche 964 3.6ltr to 4.0ltr (Ø100 to Ø102.7) Big Bore
Porsche 993 3.6ltr to 4.0ltr (Ø100 to Ø102.7) Big Bore
Capacity : 3996 cc
Stroke : 80.4 mm
Bore: 102.7mm
Please note the crankcases may need machining, this type of engine modification will need to be made by a engine specialist
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PBL-1027-C-109
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

SET OF 6
Fits:
Porsche 964 3.6ltr to 4.0ltr (Ø100 to Ø102.7) Big Bore
Porsche 993 3.6ltr to 4.0ltr (Ø100 to Ø102.7) Big Bore
Capacity : 3996 ccm
Bore Size : 102.7 mm
Stroke : 80.4 mm
Compression : 11.5:1
Piston Pin : 23 x 54.5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
P1833
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

SET OF 6
Fits:
Porsche 964 3.6ltr to 4.0ltr (Ø100 to Ø102.7) Big Bore
Porsche 993 3.6ltr to 4.0ltr (Ø100 to Ø102.7) Big Bore
Please note the crankcases may need machining, this type of engine modification will need to be made by a engine specialist
Capacity : 3996 cm
Bore Size : 102.7 mm
Stroke : 80.4 mm
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PBL-1027-C-109
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

SET OF 6
Size : 105,4 mm
Ring Thickness :
- Top Ring : 1,09 mm
- 2nd : 1 mm
- Oil-Ring : 2 mm
In motorsport, small things often decide about victory or defeat.
In particular, piston rings are among the engine components whose importance is frequently underestimated. In many cases, piston rings of poor quality are responsible for engine damage and / or poor performance.
Capricorn ensures that all parameters are optimally coordinated with each other. The manufacture is exclusively carried out by the most prestigious suppliers with whom they have been successfully cooperating for years and who all have many years of experience in motorsports.
The successful use of Capricorn piston rings in a various racing series and thus changing requirements profiles is an expression of extensive expertise and high product quality.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PRS105
The product you are viewing cross references to these numbers
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 GT3 2007>>