Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

Performance Engine Parts (Capricorn)

Refine by Car Type
DISPLAYING 1 to 2 (of 2 products)
Black Friday Sale
P1833
Product Information
Product Information
Aluminium forged engine piston & rings set. Porsche 964 / 993 3.6ltr to 4.0ltr (Ø100 to Ø102.7) Big Bore
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Related, superseded, cross reference or alternative numbers for comparison.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
P1833

The product you are viewing cross references to these numbers
Black Friday Sale
PBL-1027-C-109
Product Information
Product Information
Engine cylinder barrel set. Porsche 964/993 3.6ltr to 4.0ltr (Ø100 to Ø102.7) Big Bore
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Related, superseded, cross reference or alternative numbers for comparison.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
PBL-1027-C-109

The product you are viewing cross references to these numbers
DISPLAYING 1 to 2 (of 2 products)
About Performance Engine Parts (Capricorn)

Capricorn Performance Engine Parts for Precision, Power & Motorsport-Grade Rebuilds

Capricorn performance engine parts are engineered for builders who demand the highest level of precision, strength and consistency from their Porsche engines. Known for their advanced manufacturing techniques, motorsport-developed materials and meticulous quality control, Capricorn components deliver exceptional performance in both road and full-race applications. These parts are chosen by top-tier engine builders for their ability to withstand extreme pressures, high RPM operation and sustained heat loads.

Whether restoring a classic 911 engine, upgrading a water-cooled power unit or preparing a competition-spec build, Capricorn performance components ensure superior accuracy, durability and power retention.

What Capricorn Performance Engine Parts Do

Capricorn components are specifically designed to:

  • Enhance engine durability under motorsport-level loads
  • Improve combustion efficiency through ultra-precise machining
  • Reduce frictional losses using advanced coatings and materials
  • Strengthen critical internal components such as pistons and cylinders
  • Maintain dimensional stability during extreme heat cycles
  • Support higher compression, boost or RPM limits
  • Deliver consistent performance, lap after lap or mile after mile

These parts are engineered for engines that must perform flawlessly under the most demanding conditions.

Why Engine Components Fail Without High-Performance Upgrades

Standard or aged engine components may struggle in high-stress, high-heat or precision-critical environments. Common reasons for failure include:

  • Thermal distortion causing loss of sealing or warped surfaces
  • Detonation and pre-ignition damage, especially in high-output engines
  • Material fatigue over long mileage or repeated heat cycles
  • Oil starvation, leading to scuffing and wear
  • Incorrect mixture or tuning, causing lean conditions
  • Boost pressure increases, exceeding stock component tolerances
  • General wear, including ring land erosion and cylinder scoring

These issues can reduce performance, increase oil consumption or lead to catastrophic engine failure.

Why You Should Upgrade to Capricorn Performance Engine Parts

Replacing worn components with precision-engineered Capricorn parts designed to outperform original specifications delivers significant advantages for any rebuild.

Key benefits include:

  • Motorsport-grade strength and heat resistance
  • Higher compression stability and improved sealing
  • Sharper throttle response and more consistent power output
  • Reduced friction for smoother, more efficient engine operation
  • Greater resilience under turbocharged or track conditions
  • Longer lifespan due to premium materials and coatings
  • Increased reliability when pushing performance boundaries

Capricorn parts are ideal for anyone seeking the pinnacle of engineering excellence in a Porsche engine build.

You may also like
Popular Models