HKS Hi-Power SPEC-L2 Exhaust for 16-21 Honda Civic Hatch

HKS Hi-Power SPEC-L2 Exhaust for 16-21 Honda Civic Hatch

The HKS Hi-Power SPEC L2 Exhaust System is a cat back style exhaust for the tenth generation Honda Civic Hatchback FK7 with the L15B/C engine. Within the exhaust system, this assembly replaces the factory rear muffler and tailpipe section to change muffler construction, outlet configuration, and downstream piping dimensions while retaining the factory catalytic converter and upstream emissions hardware.

On the FK7, the factory rear muffler is designed primarily for low noise and broad fitment across trims. The SPEC L2 addresses packaging and mass targets by using a lighter muffler design and a dual outlet layout with defined tip sizing. This part is intended for installers who want a known fit cat back rear section built around documented tube diameters and documented exterior sound measurements.

Key Features

• Application: Honda Civic Hatchback FK7 only, L15B/C engine, model years 2016 through 2021
• System position: Rear section cat back style exhaust, replaces the rear muffler and tail section
• Construction material: SUS304 stainless steel main construction
• Main pipe diameter: 60.5 millimeter inlet stepping to dual 50.8 millimeter outlets
• Tip diameter: Dual 94 millimeter outlets
• Sound level, stationary proximity measurement: 93 decibel HKS value, 83 decibel stock value
• Weight: 4.4 kilogram HKS value, 5.9 kilogram stock value

Selection and tradeoffs: Choose this part when the goal is a defined dual outlet layout and documented tube sizing, with a verified reduction in rear section weight versus stock. The published stationary sound level indicates a higher exhaust sound level than the factory system, which is a practical consideration for noise sensitivity and local enforcement. This product is specified for FK7 Hatchback fitment; it is not listed as a universal Civic fit and should be treated as chassis specific.

Installation scope and considerations: This is a bolt on rear section replacement that interfaces at the factory exhaust joint. Standard exhaust service steps apply, including inspection of sealing surfaces and correct gasket use where specified by the kit. No alignment changes are created by the exhaust itself, but installers should verify clearance to rear suspension components and rear bumper openings after installation due to the dual outlet tip configuration.