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  • Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod
  • Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod
  • Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod
  • Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod
  • Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod
  • Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod
Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod

Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod

$20.00-$60.00/ Piece|20 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 20 pieces）
Customized packaging（Min.Order: 1000 pieces）
Graphic customization（Min.Order: 20 pieces）
View product details

Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Force Transmission & Motion Conversion: Designed to transfer piston force to the crankshaft, converting linear motion into rotational energy for high-performance BMW engines.
  • High-Strength Material: Forged from 4340 steel alloy, ensuring exceptional durability and resistance to extreme stress and temperatures in racing or high-output environments.

Key features

  • 1. Forged 4340 Steel Construction

    • With forged 43440 steel and a polished surface finish, reduce wear and enhance durability under extreme engine conditions*. This high-strength alloy outperforms standard forged steel rods, ensuring reliability in high-temperature and high-stress environments.

  • 2. H-Beam Structural Design

    • With an H-beam structural design, optimize strength-to-weight ratio for high-performance applications compared to traditional designs*. This configuration maximizes rigidity while minimizing rotational mass, ideal for racing engines.

  • 3. High-Load Capacity Performance

    • With engineered high-load capacity, sustain extreme RPMs without deformation, outperforming standard connecting rods*. The robust construction handles aggressive driving scenarios, such as track racing, with precision.

  • 4. Racing-Engineered Scenario Solutions

    • Designed specifically for racing environments, ensure reliability during high-stress scenarios like track driving. The component’s performance is tailored to BMW 325/M52B25 engines, delivering consistent power output under demanding conditions.

  • 5. OEM Compliance Certification

    • Manufactured to OEM specifications, ensuring seamless compatibility and longevity in BMW engines. The "BRAVES" brand guarantees adherence to automotive industry standards for precision and durability.

Product details

Forged 4340 Steel Racing M50 Connecting Rod for Bmw 325 325i M52b25 Conrod

The Forged 4340 Steel Racing M50 Connecting Rod is engineered for high-performance BMW 325/325i M52b25 engines. Built with an H-beam design and premium forged steel, it delivers unmatched durability and efficiency under extreme engine loads.

Technical specifications

FeatureSpecificationBenefit
MaterialForged 4340 Chrome-Moly SteelHigh strength-to-weight ratio; withstands thermal stress
DesignH-Beam ProfileOptimized rigidity and reduced flex under load
Surface FinishPolishedReduced friction; enhanced longevity
ApplicationBMW 325/325i M52b25 EnginesDirect OEM fitment for racing/modified engines

Customization guide

Adjustable parameters include material thickness and surface treatment to meet specific engine requirements (e.g., increased load capacity or thermal resistance).

Get inspired

With its lightweight yet robust H-beam design and forged 4340 steel, this connecting rod is ideal for high-revving engines. Whether you’re building a track-ready BMW or upgrading for street performance, it ensures reliable power transfer and extended component life.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Strength85,000 PSI+15% (97,750 PSI)+30% (110,500 PSI)*
Weight1.2 kg20% lighter30% lighter
Heat Resistance500°C550°C600°C

Supplier's note

  1. Technical Breakthroughs:

    • Material: Forged 4340 steel offers 20% higher fatigue resistance than traditional 4130 steel.
    • Design: The H-beam profile reduces flex by 18% compared to I-beam designs.
    • Surface Finish: Polished surfaces cut friction by 25%, enhancing engine efficiency.

  2. Version Selection Guidance:

    • Base Model: Suitable for street-driven BMWs with stock or mild modifications.
    • Advanced Model: Ideal for track-day enthusiasts needing extra strength and reduced weight.
    • Pro Model: Designed for professional racing, where extreme heat resistance (600°C) and 110,500 PSI strength are critical. With its lightweight build, it enables higher RPM thresholds and faster acceleration.

*Pro Model certifications exceed SAE J2224 standards by 35%.

Frequently asked questions

  • Which model of connecting rod is best suited for BMW 325 or 325i M52b25 engines?

  • How do I maintain the polished surface of the M50 connecting rod?

  • What are the advantages of 4340 steel over forged aluminum in connecting rods?

  • Can the BRAVES M50 connecting rod be customized with logos or engravings?

  • Is the M50 connecting rod compliant with automotive safety standards?

  • Which connecting rod suits high-revving BMW engines like the M52b25?

  • Are BMW M52b25 connecting rods compatible with stock engine blocks?

  • How does the M50 connecting rod compare to standard BMW OEM rods?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionHigh-Performance Racing EnginesIndustry: 4130 Steel (ASTM A322) ▲ Base: 4340 Chromoly Steel (ASTM A322) ▲▲ Advanced: 4340 with Nitriding (ASTM A322, HRC 48-52)▲▲ 30% higher tensile strength (220 ksi vs industry 160 ksi) (SAE J1292 compliant)Increased cost and weight compared to base-tier materials
Design TypeHigh-Stress Engine EnvironmentsIndustry: I-beam (Wall Thickness: 4.5mm) ▲ Base: H-beam (5.0mm) ▲▲ Advanced: H-beam + Rib Reinforcement (5.5mm)▲▲ 40% improved fatigue resistance (ISO 284-2016 compliance)Complex manufacturing increases production time/cost
Surface TreatmentHigh RPM Applications (≥9000 RPM)Industry: Black Oxide (Surface Finish Ra 1.6μm) ▲ Base: Polished (Ra 0.8μm) ▲▲ Advanced: DLC Coating (Ra 0.4μm)▲▲ 30% reduced friction vs uncoated (reduces wear by 50%)DLC coating requires specialized post-processing
CustomizationOEM/Aftermarket BMW Performance BuildsIndustry: Generic Fit (Tolerance ±0.01mm) ▲ Base: BMW Model-Specific (±0.005mm) ▲▲ Advanced: Braes Certified (±0.001mm)▲▲ Precision fit for BMW M52B25 engines (ISO 2768-m tolerance class)Limited to specific BMW engine platforms
Performance CapabilityMotorsport Racing (e.g., Track Events)Industry: 8000 RPM ▲ Base: 9500 RPM ▲▲ Advanced: 10,500 RPM (per SAE J1995)▲▲ Enables extreme RPM ranges for racing (tested at 12:1 compression ratio)Requires high-quality lubrication systems
DurabilityExtreme Load Conditions (e.g., Drag Racing)Industry: 500-hour endurance ▲ Base: 800-hour ▲▲ Advanced: 1200-hour (per SAE J2224)▲▲ 2.4x longer service life at 10,000 RPM continuous operationHeavier than base-tier rods (15% weight increase)

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