Fabspeed Sport Cat Downpipe for C8 Chevrolet Corvette ZR-1

Fabspeed equips the C8 ZR-1 with two 200-cell EMITEC HJS tri-metallic racing catalytic converters, each rated to 1200 hp and engineered to flow 90-92% of a straight pipe to slash backpressure and maximize exhaust flow, turbo spool, signature twin-turbo whistle, and throttle response. These HJS Emitec catalysts are EPA compliant, European homologated, and TÜV approved. Crafted from aerospace-grade T304L stainless steel and precision built using fiber-optic laser cutting with back-purged TIG welds, the system sheds 20 lb while delivering a deeper, more aggressive tone. The result is guaranteed quicker transient response, a ferocious growl, and dyno-proven gains across the rev range. For maximum power and sound, pair these sport cats with Fabspeed’s Megaphone Catback to further reduce backpressure, sharpen throttle response, and amplify the exhaust note.

Features

• +91hp and 141ft/lbs
• Lightweight design saves 20lbs
• Improved sound and turbo spool response
• Insulated with ceramic fiber and 625 stainless steel
• German 200 cell EMITEC HJS tri-metallic catalyst
• Direct bolt-on replacement; no cutting or welding required
• Constructed from CNC mandrel-bent T304L stainless steel
• Optimized for maximum performance with no check engine light, guaranteed
• All Fabspeed performance products are backed by the Fabspeed lifetime warranty

Applications

• Corvette ZR-1: C8 (2025-present)
  [LT7 – 5.5L V8 twin-turbo]

Notes

• All Fabspeed products are expected to ship within one week of order, though timelines are often much quicker

About Fabspeed

Fabspeed Motorsport is situated in Fort Washington, Pennsylvania, within the United States of America. Their extensive 26,000 sqft. facility serves as a hub for various car clubs, including Porsche Club of America, Ferrari, McLaren, Lamborghini, and more. The company is renowned for its comprehensive approach to product development. They handle the entire process, from design and engineering to dyno testing, street trials, and racing assessments, ensuring the quality and performance of every item. Fabspeed also collaborates closely with race engine builders and tuners hailing from Italy, Germany, and the United States, resulting in the creation of the Ultimate Performance parts. To cater to their passionate global audience, Fabspeed meticulously crafts systems using aerospace-grade austenitic stainless steel, titanium, and carbon fiber materials, setting a standard for excellence in the industry.