C8 Corvette E-Ray NPP Valved Cat-Back Exhaust with Quad Stainless Tips (2024-2026)
Want your E-Ray to sound like the V8 is doing the work? The AutoSpeed Performance Series Cat-Back Exhaust, ASP-EXH-CBK-GM-0001-PS, is a valved cat-back for the 2024-2026 C8 Corvette E-Ray with the 6.2L LT2 engine. It runs on your factory valves, so your quiet and loud modes stay exactly where they are.
With the valves open the note comes in deeper and louder than the factory NPP system gives on its own, and four polished stainless tips sit 4.5 inches across in the rear fascia. A cat-back only touches what is behind the catalytic converters, so the front axle, battery and eAWD system are nowhere near it.
Product Details
- Product: AutoSpeed Performance Series valved cat-back exhaust
- Tip Finish: Polished stainless, slanted dual wall, embossed AutoSpeed logos
- Tips: Four, 4.5 inch outer diameter, slanted dual wall
- Material: 304 stainless steel throughout, machined brushed finish
- Tubing: 3 inch diameter, 0.065 inch wall, mandrel bent
- Crossover: Cast 304 stainless X-pipe
- Mufflers: 3 inch straight through, three chambers with the valves closed
- Sound Valves: Billet 304 stainless housings with airfoil butterflies
- Hangers: Billet stainless, TIG welded to the system
- Clamps: Stainless Accuseal band clamps, T-bolt clamps at the tips
Benefits
- Your drive mode still runs the exhaust. Quiet in Tour, open in Track, nothing to switch.
- 22 more horsepower and 10 more lb-ft at the wheels, measured by AutoSpeed against a factory Z51 exhaust on 93 octane.
- 9.5 pounds lighter than the 77 pound factory cat-back it replaces.
- Nothing is cut, drilled or welded. Your factory exhaust bolts right back on.
What to Expect
- A deeper C8 exhaust note the moment the valves open, and the same silent pull away on the front motor.
- Bright quad tips filling the rear fascia, finished to match the factory stainless.
- The V8 finally sounding like the thing moving the car, not the quiet half of a hybrid.
- A highway volume you can enjoy, the valves closed and the exhaust running through three chambers before the tips.
Important Exhaust Notes
- Your car supplies the valve actuators. The kit ships valve bodies without motors and reuses your factory AFM and NPP actuators. An E-Ray without factory NPP cannot use this system.
- No tune is required.
- A valve relearn is required. Your AFM and NPP valves are relearned with an OBD scan tool, per GM Document ID #5406413. Skipping it can cause a check engine light and damage the valves. Any Chevrolet dealer can do it.
- Professional installation recommended. About three hours on a lift, with the rear wheels, wheel liners, air deflectors and rear bumper fascia off.
- The install guide gives a torque figure for every joint, 44 lb-in through 60 lb-ft, including 75 lb-in on each actuator bracket. Have a torque wrench ready for those figures.
- Re-torque the tip clamps after the first heat cycle.
CORVETTE COMPATIBILITY
- Generation: C8 Corvette
- Model: E-Ray
- Model Years: 2024-2026
- Engine: 6.2L LT2 V8 with front electric motor
- Body Styles: Coupe and HTC Convertible
- Required Equipment: Factory NPP dual-mode exhaust
Use Overview
Use this AutoSpeed cat-back when you want a deeper note, bright quad tips and your NPP modes untouched. Built for a street driven 2024-2026 C8 Corvette E-Ray with the factory NPP exhaust.
Why Buy from Custom Corvette Accessories
If you want your 2024-2026 C8 Corvette E-Ray louder without giving up the NPP modes, the AutoSpeed ASP-EXH-CBK-GM-0001-PS is the polished tip version, built for the 6.2L LT2 with factory NPP. Custom Corvette Accessories sells Corvette parts and nothing else, so if you are not certain your E-Ray has NPP, ask us before you order.
✅ In-stock items ship in 1–2 business days via Standard Ground.
✅ Free shipping items are available in the Continental US only.
✅ Custom quotes available for 2-Day, Next Day, or Saturday delivery.
✅ Custom or backordered items ship as soon as available.
