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JDY Stage 2 Forged Pistons – BMW S58 (G8X M2 / M3 / M4)

JDY Stage 2 Forged Pistons – BMW S58 (G8X M2 / M3 / M4)

by JDY Performance
$2,650.00 - $2,650.00
$2,650.00
$2,650.00 - $2,650.00
$2,650.00

SKU JDY-DIAP-S58-ST2

JDY Stage 2 Forged Pistons – BMW S58 (G8X M2 / M3 / M4)

Engineered for 1800+ HP | 9.2:1 Compression | 84mm Stock Bore

Built for serious power, the JDY Stage 2 Pistons are the ultimate internal upgrade for your BMW S58-powered G80 M3, G82 M4, or G87 M2. Whether you're building a high-boost street car or a full-blown race machine, these pistons are designed to handle extreme pressure, temperature, and output—supporting builds up to 1800+ horsepower.

Key Features & Benefits:

Precision Piston Design

  • Bore Size: 84mm (OEM stock size)

  • Compression Ratio: 9.2:1

  • Material: Forged from ultra-strong 2618 billet aluminum alloy for maximum durability and performance under high loads

  • Available Tiers:

    • Stage 1: Up to 1500 HP

    • Stage 2: Up to 1800+ HP with advanced coatings and reinforcements

H13 Alloy Wrist Pins

  • Diameter: 23mm

  • Wall Thickness: 0.225”

  • Stage 2 Coating: DLC (Diamond-Like Carbon) coating reduces friction and wear, enhancing lifespan under high-stress, high-temp conditions

Total Seal Performance Piston Rings

  • Thicker and stronger than OEM for improved combustion sealing, oil control, and resistance to extreme cylinder pressures

Optimized Ring Groove Geometry

  • Redesigned grooves improve heat management and reduce ring flutter

  • Ensures better sealing and reliability at high RPM and temps

Valve Pocket Compatibility

  • Custom valve pockets accommodate Kelford Stage 1, 2, and 3 camshafts

  • Allows increased valve lift and timing without clearance issues

  • Engineered for aggressive cam profiles and high-performance valvetrain setups

Stage 2-Specific Enhancements

  • Hard Anodized Crown and Skirt: Increases surface hardness and thermal resistance

  • DLC Wrist Pins: Reduces friction and wear on rods under extreme conditions

  • Ideal for high-power, high-boost, and track-focused builds

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 Pistons?

JDY’s Stage 2 Pistons are designed for professional-grade performance and maximum engine reliability. Whether you're competing on track or building a 9-second street car, these pistons give you the strength, precision, and performance you need to push your S58 3.0T to its full potential.