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  • Engine Performance CNC 4340 Billet Racing M30B35 Crankshafts for BMW M30 M42 M42B18 S42 S42B20 M42B18 Crankshaft 95MM 98mm Stro
  • Engine Performance CNC 4340 Billet Racing M30B35 Crankshafts for BMW M30 M42 M42B18 S42 S42B20 M42B18 Crankshaft 95MM 98mm Stro
  • Engine Performance CNC 4340 Billet Racing M30B35 Crankshafts for BMW M30 M42 M42B18 S42 S42B20 M42B18 Crankshaft 95MM 98mm Stro
Engine Performance CNC 4340 Billet Racing M30B35 Crankshafts for BMW M30 M42 M42B18 S42 S42B20 M42B18 Crankshaft 95MM 98mm Stro

Engine Performance CNC 4340 Billet Racing M30B35 Crankshafts for BMW M30 M42 M42B18 S42 S42B20 M42B18 Crankshaft 95MM 98mm Stro

$1500.00-$1800.00/ Piece|1 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 1 pieces）
Customized packaging（Min.Order: 1 pieces）
Graphic customization（Min.Order: 1 pieces）
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Engine Performance CNC 4340 Billet Racing M30B35 Crankshafts for BMW M30 M42 M42B18 S42 S42B20 M42B18 Crankshaft 95MM 98mm Stro

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Power Conversion & Balance: Converts reciprocating piston motion into rotational power in diesel engines, featuring precisely engineered journals and counterweights to minimize vibration and optimize performance.
  • High-Durability Design: Constructed from 4340 chromoly steel, ensuring exceptional strength and resistance to fatigue for heavy-duty applications.

Key features

  • 1. Advanced Material Technology

    • With 4340 billet steel construction, achieve superior strength and durability compared to cast alternatives*. The high-grade alloy steel ensures resistance to deformation and wear under extreme engine conditions.

  • 2. Performance-Boosting Stroker Options

    • With 95mm/98mm stroker configurations, boost engine displacement for enhanced torque and horsepower output*. Ideal for maximizing power in high-performance BMW M30/M42 engines.

  • 3. Precision-Balanced Design

    • With strategically placed counterweights and CNC-machined journals, reduce vibration and improve engine longevity under high-stress scenarios*. Optimized for smooth operation in racing or heavy-duty diesel applications.

  • 4. Certified Safety & Quality

    • With CE certification, ensure compliance with rigorous automotive safety and durability standards*. Trusted for both aftermarket upgrades and commercial engine builds.

  • 5. Customizable High-Performance Engineering

    • With adaptable journal and counterweight configurations, tailor the crankshaft to specific engine requirements for optimized power delivery and reliability*. Designed for precise fitment in BMW M30/M42 platforms.

Product details

Engine Performance CNC 4340 Billet Racing M30B35 Crankshafts for BMW M30 M42 M42B18 S42 S42B20 M42B18 Crankshaft 95MM 98mm Stro

The Engine Performance CNC 4340 Billet Racing M30B35 Crankshaft is engineered for high-performance diesel engines in BMW M30, M42, and S42 series vehicles. Crafted from premium 4340 billet steel, this component ensures exceptional strength, durability, and precision, meeting CE safety standards. Customizable designs accommodate specific engine requirements, offering optimized power transfer and reduced vibration.

Technical specifications

FeatureSpecificationBenefit
Material4340 Billet SteelHigh strength-to-weight ratio for extreme durability
CertificationCE CertifiedEnsures compliance with EU safety standards
Engine CompatibilityBMW M30, M42, S42 (Diesel)Precision fit for specified engine models
DesignCNC Machined with Balanced CounterweightsMinimizes vibration and improves engine longevity
Journal FinishPrecision Polished (Ra ≤ 0.8 μm)Reduces friction and wear for smooth operation
Stroke Options95mm, 98mmAdjustable stroke lengths for performance tuning

Customization guide

Adjustable parameters include journal diameter, counterweight placement, and stroke length to meet specific engine requirements. For example:

  • Modify counterweights for reduced vibration in high-torque applications.
  • Customize stroke length to optimize power output for racing or heavy-duty use.

Get inspired

Enhance your engine’s performance with a crankshaft designed for precision and resilience. Whether you’re upgrading a diesel engine for racing or heavy machinery, this component delivers unmatched reliability and adaptability.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Tensile Strength900 MPa+15% (1035 MPa)*+30% (1170 MPa)*
WeightStandard10% lighter20% lighter
Balance Precision±0.1mm±0.05mm±0.02mm
Surface FinishPrecision PolishedMirror FinishUltra-Low Friction Coating

Supplier's note

  1. Technical Breakthroughs:

    • 4340 Billet Steel: Offers 20% higher fatigue resistance than conventional steel, enabling endurance in high-stress diesel engines.
    • Precision Balancing: ±0.02mm balance in the Pro model reduces vibration by 40%, extending engine lifespan.
    • CE Certification: Ensures compliance with EU safety standards, simplifying global deployment.

  2. Version Selection Guide:

    • Base Model: Ideal for standard diesel engines requiring cost-effective upgrades.
    • Advanced Model: Suitable for performance enthusiasts needing lighter weight and smoother operation.
    • Pro Model: Designed for extreme applications (e.g., racing, heavy-duty trucks) where durability and precision are critical.

With the Pro model’s 1170 MPa tensile strength, you can handle peak torque loads without deformation. Pair its ultra-low friction coating with optimized counterweights to achieve seamless power transfer and minimal wear.

Frequently asked questions

  • Which crankshaft model suits BMW M30/M42 diesel engines with specific stroke requirements?

  • How do I maintain the frothing nozzle of a racing crankshaft for longevity?

  • Why is 4340 steel preferred over other materials for racing crankshafts?

  • Can this crankshaft be customized for enhanced performance in heavy-duty diesel engines?

  • Is the material of this crankshaft CE-certified for safety and compliance?

  • How does the counterweight design reduce vibration in diesel engines?

  • What’s the difference between 95mm and 98mm stroke options for BMW M30 engines?

  • Does this crankshaft support aftermarket modifications for turbocharged setups?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material & FinishHigh-performance diesel enginesSteel Grade: 4340 forged steel (Base) ▲ Aerospace-grade 4340 billet (Advanced)▲ Advanced: 20% higher tensile strength (1,050 MPa vs 880 MPa)Base: Slightly heavier; Advanced: 30% cost premium (ISO 6892-1 tensile test)
Balancing PrecisionRacing/Competitive applicationsVibration Level: 0.15 mm runout (Base) ▲ 0.08 mm (Advanced)▲ Advanced: 47% reduction in harmonic resonance (SAE J1217 standard)Requires specialized balancing equipment for installation (±0.02 mm tolerance)
Journal DesignHeavy-duty diesel trucksJournal Hardness: 58 HRC (Base) ▲ 62 HRC (Advanced)▲ Advanced: 3x longer bearing life under load (ASTM E18 indentation test)Increased machining complexity for repairs (hardened layers require CNC rework)
Stroke LengthEngine displacement upgradesStroke Capacity: 95mm (Base) ▲ 98mm (Advanced)▲ Advanced: +3% torque output (SAE J1995 power rating)Compatibility limited to modified engine blocks (requires custom pistons)
Counterweight GeometryHigh-RPM racing enginesMass Distribution: 1.2 kg/cm³ (Base) ▲ 1.45 kg/cm³ (Advanced)▲ Advanced: 25% improved rotational stability (ISO 10817 dynamic testing)Adds 8% rotational inertia (may require transmission recalibration)
Surface TreatmentCorrosive environments (marine/diesel)Corrosion Resistance: 500 hours neutral salt spray (Base) ▲ 1,000 hours (Advanced)▲ Advanced: 2x durability in harsh fluids (ASTM B117 standard)Advanced coating adds 15% to production time/cost

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