When you're building a high-horsepower BMW S58, your rotating assembly is the foundation of reliability. Supertech Forged Pistons and Connecting Rods are designed for enthusiasts and professional engine builders who demand exceptional strength, precision machining, and long-term durability under extreme cylinder pressures.
Whether you're building a street car, drag car, road race machine, or dedicated competition engine, Supertech components are engineered to handle the punishment of today's high-boost turbocharged S58 engines.
Supertech S58 Forged Pistons
Manufactured from premium 2618 forged aluminum, Supertech pistons provide the toughness needed for high-boost and high-RPM applications where OEM pistons begin to reach their limits.
Each piston features:
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Premium 2618 forged aluminum construction
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Lightweight slipper skirt design for reduced friction
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Computer-optimized skirt profile for improved stability and ring seal
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Tapered pin boss design compatible with Supertech or OEM connecting rods
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Heavy-duty H13 tool steel wrist pins rated for over 300 HP per cylinder
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Japanese-manufactured performance piston rings included
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Designed for turbocharged, nitrous, and high-performance racing applications
Piston Specifications
| Specification | Value |
| Engine |
BMW S58B30 |
| Bore |
84.0mm (STD) |
| Material |
2618 Forged Aluminum |
| Compression Ratio |
9.2:1 |
| Stroke |
94.60mm |
| Rod Length |
151mm |
| Pin Diameter |
23mm |
| Compression Height |
32.70mm |
| Head Volume |
36cc |
| Weight |
329g |
| Skirt Design |
Slipper |
| Ring Set |
Included |
Supertech S58 Forged Connecting Rods
Designed specifically for the demands of modern turbocharged BMW engines, Supertech Connecting Rods are precision forged, CNC machined, weight matched, and built to withstand extreme horsepower and sustained high-RPM operation.
Available with your choice of:
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ARP2000 Rod Bolts - Ideal for high-performance street, road race, and moderate horsepower builds.
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ARP 625+ Rod Bolts - Recommended for maximum horsepower, high boost, drag racing, and extreme competition engines.
Every rod set includes premium ARP fasteners and is balanced as a matched set for consistent engine assembly.
Connecting Rod Features
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Premium forged high-strength alloy construction
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Precision CNC machined
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Weight matched for consistent balancing
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Designed for high boost and sustained high RPM
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Compatible with Supertech forged pistons
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Includes genuine ARP fasteners
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Available with ARP2000 or ARP 625+ bolts
Connecting Rod Specifications
| Specification | Value |
| Engine |
BMW S58B30 |
| Rod Style |
I-Beam |
| Center-to-Center Length |
151mm |
| Pin Bore |
23mm |
| Pin End Width |
22.4mm |
| Big End Bore |
53.66mm |
| Big End Width |
22.4mm |
| Weight |
Approximately 650g (matched set) |
| Rod Count |
6 |
Choose the Right Rod Bolt
ARP2000
Perfect for:
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Performance street cars
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Track day builds
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Moderate to high boost applications
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Excellent balance of strength and value
ARP 625+
Recommended for:
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1,000+ horsepower builds
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Extreme boost pressures
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Drag racing
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Standing mile competition
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Professional motorsports
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Maximum fatigue resistance under severe loads
Why Choose Supertech?
Supertech has earned the trust of professional engine builders worldwide by producing premium internal engine components that consistently perform under the harshest conditions. Every piston and connecting rod is manufactured to tight tolerances for precise fitment, outstanding durability, and dependable performance.
Pair Supertech Forged Pistons with Supertech Connecting Rods to create a rotating assembly capable of handling the demands of today's most powerful BMW S58 engine builds.
Ideal For
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BMW G80 M3
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BMW G82 M4
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BMW G83 M4 Convertible
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BMW G87 M2
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BMW X3 M (F97)
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BMW X4 M (F98)
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BMW X5 M (F95)
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BMW X6 M (F96)
When reliability matters as much as horsepower, Supertech delivers the strength, precision, and confidence serious BMW builders expect.