Connecting Rod

Suitable to use with Nikasil liners.
Engine Type:
Porsche 911 2.4 / 2.7 / 3.0 Carrera / 3.0L Turbo
6-cylinder engines
Con Rod Length C/C: 127.75mm
Small end Diameter: 22.00mm
Small End Width: 23.77mm
Big End Diameter: 56.00mm
Big End Width: 25.90mm
All Wossner Forged Con Rods are made in Germany. Constructed from 4340 Forged steel, featuring a 'H' beam design, they can withstand extreme load and high RPM levels which makes them a worthwile addition during your engine rebuild. They are supplied as matched full engine sets within +/- 1.5grams and include ARP Bolts.
Price shown is for complete engine set.
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)
High-Performance Connecting Rods (Con Rods) – Strength, Precision, and Balance for Porsche Engines
Connecting rods — commonly known as con rods — form the vital link between the piston and the crankshaft, converting linear motion into rotational force. In high-performance Porsche engines, con rods endure immense stress, heat, and pressure with every revolution, making their strength, balance, and precision crucial for reliability and performance.
At Design911, we offer a range of precision-engineered
connecting rods designed for both classic and modern Porsche engines.
Manufactured from motorsport-grade materials, these components deliver
exceptional tensile strength, fatigue resistance, and dimensional accuracy —
essential for high-RPM operation, rebuilds, and engine tuning projects.
What Do Connecting Rods Do?
Connecting rods are the mechanical bridge between pistons and the crankshaft, transmitting the force generated during combustion into the crank’s rotational motion.
Core Functions:
- Convert
reciprocating motion into rotation, enabling engine power output.
- Withstand
extreme pressure during every combustion cycle.
- Maintain
piston alignment and crankshaft balance at high speeds.
- Influence engine response and rev characteristics, particularly in performance applications.
Lightweight yet durable connecting rods are critical to maintaining smooth, reliable power delivery across the RPM range.
Why Do Connecting Rods Fail?
Even with Porsche’s engineering precision, connecting rods can degrade or fail due to stress, wear, or improper lubrication — especially under performance driving conditions.
Common Causes of Failure Include:
- Oil
starvation leading to bearing failure or heat damage.
- Over-revving
or detonation causing bending or fatigue cracking.
- Incorrect
torque or clearance during rebuilds.
- Material
fatigue from age, stress, or high-mileage operation.
- Improper lubrication causing friction wear on big-end bearings.
A failing con rod can result in catastrophic engine failure, making proactive inspection and replacement essential during rebuilds or upgrades.
Why Replace with Performance-Grade Connecting Rods?
Upgrading to high-strength connecting rods ensures your Porsche engine maintains optimal balance, durability, and performance under high stress. Whether restoring a classic flat-six or building a tuned turbocharged powerplant, precision rods provide improved reliability and smoother operation.
Key Benefits:
- Increased
strength and fatigue resistance under high-load conditions.
- Enhanced
engine response through reduced rotational mass.
- Maintains
piston-to-crank alignment for smoother operation.
- Ideal for rebuilds, tuning, and performance upgrades.
- Crafted
from premium materials such as forged steel, billet alloy, or
titanium.
- Precision-balanced to reduce vibration and ensure even load distribution.
Motorsport-grade connecting rods deliver the perfect balance of strength and agility, ensuring your Porsche engine performs reliably — whether on the track or road.
Highlights:
- High-performance
con rods engineered for strength and endurance.
- Manufacturer-quality
fitment for seamless integration with Porsche engines.
- Forged
and billet designs available for both naturally aspirated and
turbocharged models.
- Lightweight,
precision-balanced construction for maximum RPM stability.
- Perfect for performance builds, rebuilds, and engine restorations.
- Tested to motorsport standards for strength, fatigue, and dimensional accuracy.