GReddy 2017+ Honda Civic Sport 5DR/Type-R DD-R Non-Resonated Exhaust

Dual Muffler Performance for the 2017 through 2021 Honda Civic Sport Hatch and Type-R

The GReddy 10158602 DD-R Non-Resonated Cat-Back Exhaust is engineered for the 2017 through 2021 Honda Civic Sport 5-Door Hatchback (FK7) and Civic Type-R (FK8) with the L15 or K20C turbocharged engine. The GReddy DD-R 10158602 runs a 3-inch main pipe from the factory overpipe connection, splitting through GReddy's precision DD-R Y-pipe into dual 2.5-inch inlets feeding the signature twin compact DD-R mufflers.

The removable 101mm 4-inch tips with the GPP logo allow future customization with optional tip finishers and muffler silencers sold separately. The non-resonated design produces an aggressive exhaust note suited to the high-strung turbocharged Civic platform. Full 304 stainless steel construction with TIG welding and GReddy's Limited Lifetime Warranty. Note: the GReddy 10158602 non-resonated version can be loud, particularly on the Type-R. For a more refined daily-driven sound, GReddy also makes the resonated version (10158603) specifically tuned for the Type-R.

Key Features

• 3 inch High-Flow Cat-Back: 76mm main piping from the factory overpipe connection for maximum flow from the L15 and K20C turbocharged engines.
• Precision DD-R Y-Pipe: GReddy's proprietary dual-exit Y-pipe splits to 63.5mm dual inlets for even flow distribution to both mufflers.
• Dual Compact DD-R Mufflers: High-flow straight-through muffler design delivers aggressive sound with minimal backpressure.
• Removable 101mm Tips: 4-inch GPP-engraved tips are removable for future tip upgrades or silencer installation without muffler replacement.
• Non-Resonated Design: More aggressive sound character compared to the resonated version. Suited for track-oriented or enthusiast-focused builds.
• Full 304 Stainless Steel: TIG welded stainless construction throughout for durability and corrosion resistance.
• Limited Lifetime Warranty: Backed by GReddy's Limited Lifetime Warranty on materials and workmanship.

What's Included

• GReddy 10158602 DD-R Non-Resonated cat-back exhaust system (3 pieces)
• 76mm front pipe section
• Dual 76mm to dual 63.5mm precision DD-R Y-pipe
• Dual DD-R mufflers with removable 101mm tips
• 3.0 inch oval gaskets (2 included)
• Mounting hardware

Specifications

This Part Fits

Note: The 10158602 non-resonated version may produce a louder exhaust note on the Type-R (FK8) than on the Sport Hatch (FK7). For a more refined daily-driven sound on the Type-R, GReddy offers the resonated version (10158603). Both versions share the same DD-R muffler platform and tip design.

Frequently Asked Questions

Q: Will the GReddy 10158602 fit both the Civic Sport Hatch and the Civic Type-R?
A: Yes. The 10158602 is designed to fit both the FK7 Civic Sport 5-Door Hatchback and the FK8 Civic Type-R. The system uses a slight taper at the first flange to connect to the factory overpipe on both applications.

Q: What is the difference between the GReddy 10158602 and 10158603?
A: The 10158602 is the non-resonated version and produces a more aggressive sound. The 10158603 is the resonated version, specifically tuned for the Type-R, and offers a more refined daily-driven tone. Both use the same DD-R muffler and tip platform.

Q: How loud is the GReddy 10158602 non-resonated exhaust?
A: GReddy describes this as an aggressive exhaust note suited to the Sport Hatch platform. On the Type-R, GReddy specifically notes it may be loud. If noise level is a primary concern, the resonated 10158603 is the recommended choice for the Type-R.

Q: Can I replace the tips on the GReddy 10158602 later?
A: Yes. The 101mm tips are removable, which is one of the core features of the DD-R system. GReddy offers optional tip styles and muffler silencers that are sold separately and compatible with this system.

Q: Does the GReddy 10158602 replace the factory catalytic converter?
A: No. The 10158602 is a cat-back system that connects after the factory catalytic converter and overpipe. The factory cat and front pipe are retained.

Q: Will I need a tune after installing the GReddy 10158602?
A: A tune is not required for this cat-back system on the stock-turbo Civic. However, if you are running an upgraded downpipe or other intake or boost modifications, a professional calibration is always recommended.

Q: Does the GReddy 10158602 connect to the factory overpipe directly?
A: Yes. The 10158602 features a slight taper at the first flange that mates to the factory overpipe flange. No adapter or additional piping is needed for a stock-overpipe installation.

Q: What warranty covers the GReddy 10158602?
A: GReddy covers this exhaust system with a Limited Lifetime Warranty against defects in materials and workmanship. Under the Magnuson-Moss Warranty Act, installing a cat-back exhaust system cannot void your vehicle's factory powertrain warranty unless a dealer can prove the exhaust directly caused the specific failure being claimed.

Installation Notes

• 3-piece cat-back system connects after factory overpipe. Factory catalytic converter and front pipe are retained.
• Slight taper at first flange mates to factory overpipe connection without adapter. Replace factory gasket with included 3.0 inch oval gasket for a leak-free seal.
• Two 3.0 inch oval gaskets included. Use at both mating flanges.
• Install loosely in full system sequence before tightening any hangers or clamps to ensure proper tip alignment relative to bumper cutouts.
• Allow system to cool completely from any test fitting before final torque of fasteners.
• Professional installation recommended for optimal alignment of dual tips relative to the Type-R or Sport Hatch rear bumper.

California Prop 65 Warning: This product can expose you to chemicals including nickel and chromium compounds known to the State of California to cause cancer and reproductive harm. For more information, visit www.p65warnings.ca.gov.