Upgrading restrictive factory exhaust with a tuned straight-through GReddy Exhaust System will increase horsepower & torque, add a deep sporty exhaust note, give style & flare to the look of your car, all while increasing fuel efficiency.

Retaining the classic GReddy street performance styling and perfect fitment, this exhaust system is expertly designed to complement the body-lines and style of each specific vehicle application. + Reduced Shipping Fees on Supreme SP Exhaust Systems!

Upgrading restrictive factory exhaust with a tuned GReddy & GPP Exhaust System will increase horsepower & torque, add a deep sporty exhaust note, give style & flare to the look of your car, all while increasing fuel efficiency.

Upgrading restrictive factory exhaust with a tuned straight-through GReddy and GPP Exhaust System will increase horsepower & torque, add a deep sporty exhaust note, give style & flare to the look of your car, all while increasing fuel efficiency.

The unique dual muffler Supreme SP for the 10th generation Honda (FC3) Civic Si coupe features high-flow with a refined exhaust note. Under wide-open-throttle, spirited driving, the system offers the classic GReddy deep exhaust growl.

This is the official North American GReddy Online Catalog / Official ShopGreddy.com Online Store for GReddy Performance Products, Inc. All GReddy items ship directly from our Irvine California warehouse. ShopGreddy is also the largest …

Experience the evolution of exhaust technology with GReddy's EVOlution GT exhaust line. This newest generation features improved and refined design, including high flow straight-through internals for optimal performance.

Upgrading restrictive factory exhaust with a tuned straight-through GReddy and GPP Exhaust System will increase horsepower & torque, add a deep sporty exhaust note, give style & flare to the look of your car, all while increasing fuel efficiency.

Experience top-notch performance and a striking aesthetic with the GReddy Revolution RS Exhaust Systems - designed and built by industry experts for an expertly-crafted, application-specific product.

DD-R Concept : Designed with a modern interpretation of the iconic GReddy DD “Dynamic Dual” exhaust, the GPP DD-R Exhaust Systems provide a distinct style and race-inspired sound for modern tuner cars.