The next-generation Corvette ZR1 may not be out yet in two years time but it looks like Chevrolet may have to modify its exhaust when it finally hits the production line.

Our spies were able to take new photos of the all-American sportscar with unconventional exhaust pipes. Apparently, the ZR1 went over the allowed 100 decibel (dB) limit and was considered too noisy for testing. This resulted in Chevrolet adding more pipes to the Corvette ZR1 in order for it to be less noisy around the Nurburgring.

Spied: Noisy Corvette ZR1 prototype gets modified exhaust

While they may look odd, the side-facing rear pipes is actually a well-known trick that are used by track day goers when the car they're using are over the sound limit. This could mean that the new Corvette ZR1 could have some trouble in countries with strict regulations when it comes to loud car exhausts.

The rear side-facing exhaust on the new Corvette ZR1 prototype

There is no word yet as to what type of engine Chevrolet stuck in the new Corvette ZR1 but it's safe to assume that it might be a highly-tuned V8. The new ZR1 may produce well over 700 PS (previous-gen cranked out 638 PS) and could benefit from either a supercharger or twin-turbo system.

Up close with the 2019 Corvette ZR1 prototype

The 2019 Corvette ZR1 could make its world debut by the end of 2018.