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  • Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft
  • Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft
  • Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft
  • Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft
  • Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft
  • Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft
Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft

Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft

$1300.00-$1400.00/ Piece|2 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 3 pieces）
Superfinishing（Min.Order: 3 pieces）
Custom Design（Min.Order: 3 pieces）
View product details

Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Stroker Performance: 77mm stroke design increases engine displacement, delivering enhanced power and torque output for high-performance applications.
  • Material Excellence: Crafted from aerospace-grade 4340 chromoly steel alloy, ensuring unmatched durability under extreme loads and high RPMs.
  • Precision Compatibility: Engineered for Nissan Skyline RB25/RB26/RB26DET engines, offering exact fitment and optimized performance for these platforms.

Key features

  • 1. Material Technology

    • With 4340 billet steel and nitriding surface treatment, you can achieve superior strength and wear resistance compared to traditional forged steel crankshafts*.

  • 2. Interactive Design

    • The modular design allows customizable stroke and bore adjustments, offering greater flexibility than non-modular crankshafts*.

  • 3. Performance Parameters

    • The 77mm stroke increases displacement by up to 15% compared to standard cranks, boosting horsepower output for high-performance engines*.

  • 4. Scenario Solutions

    • Engineered for high-RPM racing applications, it maintains stability at extreme power levels where standard cranks may fail*.

  • 5. Certification Standards

    • Constructed to meet or exceed SAE J429 performance standards for automotive components*.

Product details

Adracing Engine Performance 77mm Stroker 4340 Billet Crankshafts for Nissan Skyline RB25 RB26 RB26DET Crankshaft Crank Shaft

The Adracing Engine Performance 77mm Stroker 4340 Billet Crankshaft is engineered for high-performance Nissan Skyline RB25/RB26/RB26DET engines. Crafted from aerospace-grade 4340 billet steel, this modular crankshaft delivers unmatched strength, precision balancing, and customization flexibility to maximize power output and durability in extreme racing conditions.

Technical specifications

FeatureSpecificationBenefit
Material4340 Billet SteelHigh strength and fatigue resistance for extreme loads.
Stroke Length77mm StrokerIncreases displacement for greater torque and horsepower.
Surface TreatmentNitrided FinishEnhanced wear resistance and corrosion protection.
BalancingDynamic BalancingReduces vibration, enabling stable high-RPM operation.
CompatibilityNissan Skyline RB25/RB26/RB26DETDirect-fit upgrade for optimal engine integration.
WeightLightweight DesignMinimizes rotational inertia for faster acceleration.

Customization guide

Adjust stroke/bore dimensions or material thickness to meet specific engine requirements. With modular design flexibility, users can optimize crankshaft geometry for custom tuning or hybrid engine builds.

Get inspired

Elevate your Nissan Skyline’s performance with a crankshaft engineered to handle extreme power. Whether you’re chasing lap records or street dominance, the 77mm stroker design and aerospace-grade materials ensure reliability even under relentless stress.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Stroke Length77mm Stroker77mm Stroker77mm Stroker
Material Strength200ksi Tensile220ksi Tensile (+10%)240ksi Tensile (+20%)*
BalancingStatic BalancingDynamic BalancingDual-Plane Balancing
RPM Tolerance8,000 RPM9,000 RPM (+12.5%)10,000 RPM (+25%)
Weight12.5kg12.0kg (-4%)11.5kg (-7.2%)

Supplier's note

  1. Technical Breakthroughs:

    • 4340 Billet Steel: Triple the fatigue life of conventional cast cranks, ensuring reliability in high-horsepower applications.
    • Dual-Plane Balancing (Pro): Reduces harmonic vibrations by 40%, enabling stable operation at 10,000 RPM.
    • Nitrided Surface: 20% harder than standard carburized finishes, resisting scoring in high-temperature environments.

  2. Version Selection Guide:

    • Base Model: Ideal for street enthusiasts seeking a cost-effective stroker upgrade with standard durability.
    • Advanced Model: Perfect for track-day warriors requiring dynamic balancing and 9,000 RPM capability.
    • Pro Model: Designed for professional racers needing extreme RPM tolerance and minimal weight. Its dual-plane balancing, paired with 240ksi steel, enables seamless power delivery in supercharged/dual-clutch setups.

Comparative advantage over industry benchmarks: 25% higher RPM tolerance than competitors’ forged crankshafts.

Frequently asked questions

  • Which Adracing crankshaft model is best for a Nissan Skyline RB26DET stroker build?

  • Why is 4340 steel better than forged steel for Nissan RB engine crankshafts?

  • Can the Adracing 77mm RB25 crankshaft be customized for specific engine specs?

  • Is the Adracing RB26DET crankshaft heat-treated for high RPM use?

  • How do I maintain the Adracing RB26 crankshaft’s surface finish?

  • What makes the Adracing 4340 billet crankshaft suitable for RB25 racing engines?

  • Does the Adracing RB26DET stroker crankshaft fit all Nissan Skyline models?

  • Why choose a billet over forged crankshaft for a Nissan RB26DET engine build?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Forged CrankshaftDaily drivers, light-duty performanceForged from 1045 steel (ASTM A394)Cost-effective, durable for moderate loadsHeavier, less customizable, limited RPM capacity (up to 6500 RPM)
Billet CrankshaftRacing, high-RPM engines4340 chrome-moly steel (SAE J429 Grade 8) ▲▲ – Machined from solid billet (ISO 23138)Customizable, lightweight, handles extreme RPM (>8000 RPM)Higher cost, requires precision machining
Nodular Iron CrankshaftEconomy vehicles, low-stress applicationsDuctile iron (ASTM A536 Grade 65-45-12)Affordable, corrosion-resistantLower strength, unsuitable for high performance
Modular CrankshaftCustom engine builds, rebuildsModular journal sections (ISO 23138) ▲ – Allows section replacementEasy to repair, adaptable to different engine configurationsComplex assembly, may have balancing issues
Custom Ground CrankshaftTuned engines needing precise specsPrecision ground finish (Ra 0.8 μm per ISO 1302) ▲ – Custom stroke/bore optionsPerfect fit for specific engine requirements, reduced frictionTime-consuming to produce, costly for small batches
Lightweight AluminumLightweight applications (e.g., motorcycles)6061-T6 aluminum (ASTM B209) ▲ – 30% lighter than steelSignificant weight reduction, good for low-torque setupsProne to cracking under high load, limited RPM capacity

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