HKS Hi-Power SPEC-L II Cat-Back Exhaust System - Honda Civic FK7 L15C (2017-2021)
The HKS Hi-Power SPEC-L II Cat-Back Exhaust System is designed for the Honda Civic FK7 equipped with the turbocharged L15C engine. It combines advanced lightweight construction with improved exhaust flow and a sporty, well-balanced exhaust note. Engineered to deliver a more engaging driving experience, the system maintains excellent comfort for everyday commuting and long-distance driving.
The straight-through muffler design reduces back pressure by up to 40% compared to the factory exhaust system, improving exhaust flow and allowing the engine to breathe more efficiently. This results in improved throttle response, more efficient cylinder scavenging, and a broader, more usable powerband.
The Hi-Power SPEC-L II is manufactured from thin-wall stainless steel to minimize weight without compromising durability. Weighing just 12.3 kg, it is approximately 30% lighter than the factory exhaust system, which weighs 17.5 kg. The reduced weight contributes to improved vehicle dynamics and a more responsive driving experience.
The exhaust note has been carefully tuned to produce a deep, sporty bass tone during acceleration while minimizing unwanted cabin drone during normal driving. The system has been redesigned to match the rear bumper shape of the 2020 Civic Hatchback while remaining fully compatible with 2017–2019 models. It features a 94 mm exhaust tip and 60.5–50.8 mm exhaust piping, and is designed as a direct replacement for the factory exhaust system with OEM-style fitment.
Features
- Fits the Honda Civic FK7 L15C (2017–2021).
- Complete Hi-Power SPEC-L II cat-back exhaust system.
- Lightweight stainless steel construction.
- Weighs 12.3 kg – approximately 30% lighter than the factory exhaust system.
- Straight-through muffler design with up to 40% lower back pressure than stock.
- Improved exhaust flow.
- Improved throttle response, more efficient cylinder scavenging, and a broader, more usable powerband.
- Deep, sporty exhaust note with reduced cabin drone.
- 94 mm exhaust tip.
- 60.5–50.8 mm exhaust piping.
- Redesigned for the 2020 Civic Hatchback and compatible with 2017–2019 models.
- Direct replacement with OEM-style fitment.
