HKS 31019-AH106 Hi-Power SPEC-L II Cat-Back Exhaust for 2017-2021 Honda Civic

Vehicle Fitment

• 2017-2021 Honda Civic Type R (FK8), K20C 2.0L turbo I4

Features

• HKS Hi-Power SPEC-L II cat-back exhaust system engineered for performance
• Straight-through muffler design for improved exhaust flow efficiency
• Dual 94 mm titanium tip outlets for aggressive styling and sound
• System is approx. 34 % lighter than stock for reduced rear weight
• Enhanced exhaust tone with moderate performance-oriented sound
• Durable SUS304 stainless steel construction
• Direct bolt-on installation matching OEM exhaust mounts
• Minimal drone at cruise speeds with an engaging note under acceleration

Specifications

• Part Number: 31019-AH106
• Series: Hi-Power SPEC-L II cat-back exhaust
• Main Pipe Diameter: ~65 mm → dual ~50.8 mm
• Tip Diameter: ~94 mm each
• Material: SUS304 stainless steel with titanium tip covers
• Estimated Sound Level: ~89 dB vs stock ~82 dB
• Weight: ~11.6 kg (~34 % lighter than OEM)
• Fitment Years: 2017-2021 Honda Civic Type R (FK8)

Included Components

• 1x Hi-Power SPEC-L II cat-back exhaust assembly
• Installation hardware (gaskets, clamps, mounting components)

Product Description

The HKS 31019-AH106 Hi-Power SPEC-L II Cat-Back Exhaust System is a high-quality performance exhaust built specifically for the 2017-2021 Honda Civic Type R (FK8) with the K20C 2.0 L turbocharged engine. Designed to replace the stock exhaust system with a lightweight, straight-through design, it improves exhaust flow efficiency and helps enhance throttle responsiveness and overall engine performance while delivering a sportier sound character. The dual 94 mm titanium tips provide bold visual appeal at the rear of the vehicle.

Constructed from SUS304 stainless steel with titanium-covered tips, this exhaust is significantly lighter than the factory system, reducing rear weight and contributing to a more balanced feel. The Hi-Power SPEC-L II system is engineered to provide an engaging exhaust tone that stays comfortable during daily driving yet becomes more pronounced under spirited acceleration. Direct bolt-on installation uses OEM mounting points, making it a strong choice for enthusiasts seeking both performance gains and refined sound on their FK8 Civic Type R.