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Wishing all of our clients a Happy and Healthy New Year!
JDY Stage 1 Forged Pistons – BMW S58 (G8X M2 / M3 / M4)

JDY Stage 1 Forged Pistons – BMW S58 (G8X M2 / M3 / M4)

by JDY Performance
$2,150.00 - $2,150.00
$2,150.00
$2,150.00 - $2,150.00
$2,150.00

SKU JDY-DIAP-S58-ST1

JDY Stage 1 Forged Pistons – BMW S58 (G8X M2 / M3 / M4)

Engineered for 1500 HP | 9.2:1 Compression | 84mm Stock Bore

Take your BMW S58 engine to the next level with the JDY Stage 1 Pistons—a forged internal upgrade designed for high-performance street builds, track-day cars, and aggressive daily drivers. Built to handle up to 1500 horsepower, these pistons are crafted for strength, efficiency, and reliability under high-boost conditions while maintaining OEM-level fitment and compatibility.

Key Features & Benefits:

Precision Forged Design

  • Bore Size: 84mm (OEM stock size)

  • Compression Ratio: 9.2:1

  • Material: Forged from 2618 billet aluminum alloy, offering a superior balance of strength and weight

  • Performance Rating: Supports builds up to 1500 HP, ideal for aggressive street and weekend race use

H13 Alloy Wrist Pins

  • Diameter: 23mm

  • Wall Thickness: 0.225”

  • Built from ultra-durable H13 tool steel to withstand high cylinder pressures and prolonged heat cycles

Total Seal Piston Rings

  • High-performance Total Seal rings deliver improved sealing, oil control, and reduced blow-by

  • Thicker than OEM for superior combustion chamber efficiency

Redesigned Ring Grooves

  • Optimized ring land geometry improves heat dissipation and ring stability

  • Reduces ring flutter at high RPM and ensures long-lasting performance

Custom Valve Pocket Design

  • Engineered to work with Kelford Stage 1 and Stage 2 camshafts, providing the clearance needed for higher lift and increased airflow without compromising piston integrity

Technical Specifications:

  • Finished Bore: 3.307 inches

  • Compression Ratio: 9.2:1

  • Wrist Pin Diameter: 0.905 inches

  • Wrist Pin Length: 2.250 inches

Why Choose JDY Stage 1 Pistons?

JDY Stage 1 Pistons are built for enthusiasts looking to extract serious power from their S58 while keeping durability in mind. Whether you're chasing high 9s or just want a solid foundation for your next power goal, these pistons offer OEM-level fitment with motorsport-grade performance.

Vehicle Fitment:

  • BMW G87 M2 Coupe (2023+)

  • BMW G80 M3 & M3 Competition Saloon (2021+)

  • BMW G81 M3 Competition Touring (2023+)

  • BMW G82 M4 & M4 Competition Coupe (2021+)

  • BMW G83 M4 Competition Convertible (2021+)

Built for power. Built for the street. JDY Stage 1 Pistons for BMW S58 – now available at ORT Motorsport.