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HKS LEGAMAX Premium HONDA CIVIC HATCHBACK FK7 (HKS31021-AH004)

HKS31021-AH004

$ 1,700.00
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HKS LEGAMAX Premium HONDA CIVIC HATCHBACK FK7

LEGAMAX Premium Civic Hatchback Exhaust System by HKS Legamax Premium mufflers offer the performance benefits of a sports muffler with the class and elegance of a premium muffler.

Every tail pipe design is customised per application to ensure that muffler has impact and becomes a focal point in the appearance of the vehicle, yet blends with the overall design of the car.

Legamax Premium mufflers are constructed of SUS304 grade stainless steel to give a high lustre finish which is durable.

Features

  • Full straight structure with no restriction achieves a 50% reduction in the exhaust pressure compared to the stock exhaust system
  • Without uncomfortable exhaust resonance, the sporty exhaust sound and comfortable interior space are created
  • High quality and JASMA approved. It clears the strict JASMA standard
  • High quality SUS304 for further durability
  • Proven "Advantex* glass wool" (Continuous fibeer glass wool)

Applications

  • 2017-2021 Honda Civic Hatchback 1.5T

What's Included

  • LEGAMAX Premium Cat Back Exhaust Kit

Product Details

  • Manufacturer part number: 31021-AH004
  • One Year Manufacturer Warranty

LEGAMAX Premium Cat Back Exhaust Kit

HKS provides a one-year warranty to the original purchaser of HKS products against defects in materials and workmanship. Please contact your seller with the original Purchase Order, photos, video, and reason for your claim. The seller will work with the Authorized Distributor directly to file a claim. Purchasing the product through an unauthorized seller may void your warranty.

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HKS

HKS is a renowned Japanese performance parts manufacturer, specializing in high-quality turbochargers, exhaust systems, suspension components, and engine management products. Known for their precision engineering and innovative designs, HKS products are trusted by car enthusiasts and professionals alike to enhance vehicle performance, reliability, and tuning potential. With a focus on motorsport and street applications, HKS continues to lead the industry in providing cutting-edge solutions for high-performance vehicles.

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Popular FAQs

Please read our FAQs page to find out more.

Why Should I Buy HKS Products from JD Customs USA?

Why Should I Buy HKS Products from JD Customs USA?

JD Customs USA is a trusted source for authentic HKS performance parts, offering enthusiasts a reliable way to purchase legendary Japanese-engineered upgrades with confidence. When you buy HKS products from JD Customs USA, you’re choosing a retailer that understands performance tuning, vehicle-specific fitment, and the heritage behind one of the most respected brands in motorsports.

HKS is globally recognized for its exhaust systems, turbo kits, intake components, suspension, electronics, and engine upgrades, developed through decades of racing and real-world testing. JD Customs USA ensures these parts are matched correctly to your platform and intended use.

Are HKS Products from JD Customs USA Genuine?

Yes. All HKS products sold by JD Customs USA are 100 percent authentic and sourced through authorized distribution channels. This guarantees genuine HKS manufacturing standards, materials, and performance characteristics.

Purchasing HKS parts from JD Customs USA protects you from counterfeit components, outdated revisions, or incorrectly labeled products that can compromise performance or fitment.

Can JD Customs USA Help with HKS Fitment and Product Selection?

Absolutely. HKS offers a wide range of components that are often part of complete performance systems, not just standalone parts. JD Customs USA helps customers confirm:

  • Correct chassis and model year compatibility
  • Turbocharged vs naturally aspirated applications
  • Supporting modifications required for safe operation
  • Street-focused vs track-focused HKS solutions

This guidance ensures your HKS upgrades deliver the performance, sound, and reliability they were designed for.

Why Buy HKS from JD Customs USA Instead of a Large Marketplace?

JD Customs USA is built around enthusiast platforms and performance-driven builds, not generic catalog listings. Many issues arise when customers select HKS parts without understanding how they integrate with the rest of the vehicle.

By purchasing from JD Customs USA, you benefit from:

  • Accurate product descriptions with real-world context
  • Knowledge of Japanese performance standards and applications
  • Honest expectations around installation and tuning
  • Support from a retailer experienced with HKS-equipped vehicles

What Makes JD Customs USA the Right Choice for HKS Products?

JD Customs USA supports brands that represent engineering excellence, motorsport heritage, and proven performance, all core values of HKS. From street cars to professional race builds, HKS parts are designed to deliver consistent results when installed correctly.

When you buy HKS products from JD Customs USA, you receive:

  • Genuine HKS performance components
  • Platform-specific recommendations
  • Support for street, track, and high-performance builds
  • Confidence that your HKS upgrade is properly matched

Choosing JD Customs USA ensures your HKS performance upgrades deliver authentic sound, power, and reliability backed by knowledgeable support.