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  • RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012
  • RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012
  • RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012
  • RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012
  • RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012
  • RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012
RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012

RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012

  • 1 - 4 Pieces
    $150
  • >= 5 Pieces
    $110

Customization:

Customized packaging（Min.Order: 100 pieces）
View product details

RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Aerodynamic Performance Enhancement: The RS4 B8 Rear Diffuser is designed to improve airflow efficiency and reduce drag, optimizing the Audi A4's (2008-2012 models) handling and stability through a sleek, aerodynamic profile.
  • Style & Customization: Features a glossy black finish, integrated fog lights, and aggressive exhaust tips made of stainless steel, enhancing both the vehicle's aesthetic appeal and acoustic performance.

Key features

  • 1. Corrosion-Resistant Stainless Steel Exhaust Tips

    • With corrosion-resistant stainless steel exhaust tips, ensure durability in harsh driving conditions. ~30% more resistant to rust than standard steel components*, enhancing longevity even in extreme environments.

  • 2. Integrated Fog Lights for Enhanced Visibility

    • With integrated fog lights, improve low-visibility driving safety by providing 25% brighter illumination than standard bumpers*. Perfect for adverse weather scenarios like fog or heavy rain.

  • 3. Aerodynamic Design for Performance Gains

    • With an aerodynamic rear diffuser design, reduce drag by up to 15% and boost high-speed stability*. Outperforms standard bumpers in optimizing airflow for improved handling and fuel efficiency.

  • 4. Precision-Engineered for Audi RS4 Compatibility

    • Designed exclusively for Audi RS4 (2008-2012), seamlessly integrate with the vehicle’s aesthetics and performance. Ideal for enthusiasts seeking a sporty upgrade without compromising functionality or fitment.

  • 5. Automotive-Grade Material Durability

    • Constructed with automotive-grade ABS plastic and stainless steel, meeting rigorous durability standards for long-term use*. Resists deformation and corrosion, ensuring reliability under demanding driving conditions.

Product details

RS4 B8 Rear Diffuser for Audi A4 Normal Rear Bumper Diffuser 2008 2010 2012

The RS4 B8 Rear Diffuser Kit is a precision-engineered customization solution for Audi A4 (RS4 B8) models from 2008–2012. Designed to enhance both performance and aesthetics, this kit includes a rear diffuser, exhaust components, and clamps, crafted from high-grade materials for durability and aerodynamic efficiency.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialABS Plastic (diffuser), Stainless Steel (exhaust tips/clamps)Ensures corrosion resistance and lightweight strength for automotive use
DesignGlossy black finish, integrated fog lights, aerodynamic shapeEnhances RS4's sporty appearance and improves airflow at high speeds
CompatibilityAudi A4 RS4 B8 (2008–2012)Direct-fit upgrade for OEM rear bumper systems
Exhaust SystemDual stainless steel exhaust tipsOptimizes sound quality and exhaust efficiency
Clamp SystemStainless steel clamps with adjustable fitSecures exhaust components for vibration-free performance

Customization guide

Adjustable clamp sizes and customizable exhaust tip finishes (e.g., brushed stainless steel or matte black) can be tailored to meet specific aesthetic or functional needs, such as reducing backpressure for performance tuning.

Get inspired

Elevate your Audi RS4’s presence with a diffuser that combines aggressive styling and functional aerodynamics. The sleek design reduces drag while the stainless steel components ensure longevity, even in harsh driving conditions.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Material GradeABS PlasticABS + Stainless SteelPremium Stainless Steel
Aerodynamic EfficiencyStandard OEM airflow+15% improved downforce+30% reduced drag*
Sound QualityOEM exhaust toneTuned resonanceSport exhaust note (+20dB deeper)
Weight8.5 kg9.2 kg10.1 kg (reinforced)

Supplier's note

  1. Technical Breakthroughs:

    • Aerodynamic Efficiency: The Pro Model’s +30% reduced drag improves high-speed stability and fuel efficiency.
    • Material Durability: Stainless steel clamps and exhaust tips in the Advanced/Pro models resist corrosion 50% longer than base plastic components.
    • Sound Engineering: The Pro’s deepened exhaust note (20dB) meets motorsport-grade acoustic standards for enhanced performance feedback.

  2. Version Selection Guide:

    • Base Model: Ideal for owners prioritizing cost-effective aesthetic upgrades without compromising OEM functionality.
    • Advanced Model: Targets drivers seeking a balance of style and performance, with corrosion-resistant materials for daily driving.
    • Pro Model: Designed for enthusiasts requiring maximum aerodynamic gains and aggressive sound, paired with reinforced materials for track use.

With the Pro Model’s reinforced stainless steel construction, you can achieve track-ready durability while maintaining a sleek, aggressive profile. The Advanced Model’s adjustable clamps allow seamless integration with aftermarket exhaust systems, ensuring a perfect fit.

Frequently asked questions

  • Which Audi models is the RS4 B8 Rear Diffuser compatible with?

  • How does the ABS plastic material benefit the RS4 B8 Rear Diffuser?

  • Does the RS4 B8 Rear Diffuser improve aerodynamics?

  • Can I install the RS4 B8 Rear Diffuser myself?

  • What components come with the Audi A4 RS4 B8 Rear Diffuser kit?

  • How does the RS4 B8 Rear Diffuser compare to carbon fiber alternatives?

  • Does the diffuser include integrated fog lights like the Audi RS4’s original design?

  • Is the RS4 B8 Rear Diffuser weather-resistant?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
OEM Plastic BumpersDaily driving, stock vehiclesStandard plastic (ISO 6372), 2.5kg (base model)Cost-effective, OEM compatibilityHeavy, limited customization
Aftermarket ABS BumpersLight customization, commutingReinforced ABS (ISO 6372 +), 2.0kg (▲19% lighter)Lightweight, affordableLess durable than carbon fiber
Carbon Fiber BumpersTrack racing, high-end tuningCarbon fiber (ASTM D790), 1.4kg (▲▲32% lighter)Ultra-light, high strengthExpensive, brittle
Mild Steel ExhaustsEveryday useMild steel (ASTM A36), 45 dBA noise (louder than base)Durable, budget-friendlyHeavy, noisier
Stainless Steel ExhaustsSporty driving304 stainless steel (ASTM A240), 43 dBA (▲quieter)Corrosion-resistant, quieterModerate cost
Glass-Polymer ExhaustsHigh-performance vehiclesGlass-reinforced polymer (ISO 1043), 40 dBA (▲▲quietest)Lightest, best sound qualityHigh cost, requires careful handling

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