By incorporating our unique SP (Street Performance) ideas into the design, the Supreme SP cat-back exhaust improves performance, sound quality, and appearance for the turbocharged 10th generation Honda Civic Si Coupe.

With the free flowing, compact oval SP mufflers, the system not only incorporates huge 76mm (3") pipework, but it also smooths out and streamlines the heavier factory muffler configuration. This enables the engine to be more efficient, resulting in increased performance without drone or noise. The sound level of the Supreme SP has been carefully calibrated so that no extra resonators are required; this also helps lighten the system.

To complement the Civic Si's dynamic rear diffuser, the polished stainless-steel center-exit exhaust features attractive dual, double-wall, slant cut GReddy tips. GReddy Supreme is the same way.

Application:

• Honda Civic Si Coupe (2017-2021)

Features:

• 304 stainless steel, fully hand-welded.
• Piping with a diameter of 76mm (3")
• Dual SP Mufflers with a Free Flowing, Compact Design.
• Without the drone, performance and sound are improved.
• No additional resonators are required due to careful tuning.
• Stylish Dual, Double-Wall, Slant-Cut Tips complete the look.