See All 19 Photos Because of catalytic converter sizing and the general fit, the X-shape crossover section is 2.5 inches in diameter, while the exhaust pipes step up to a 3-inch tubing.

The Power of 2.5- vs. 3-Inch Exhaust You're sitting around with your typical street/strip V-8 and wondering, should I get 2.5-inch-diameter exhaust pipes and mufflers, or should I go 3-inch?

Since Lester makes a serious 560 hp, a 3-inch system seemed an ideal choice ... to his shop and spent a day massaging the pipes. An exhaust system may not be very romantic, but when installed ...

After idling for a second, the driver gives us a few revs, with the new pipes providing a nice ... the new Chevy Silverado ZR2 cat-back exhaust includes 3-inch and 2.5-inch piping, providing ...

Aftermarket performance exhaust specialist MBRP is launching a new line of 3-inch cat-back exhaust upgrades for the 2023 Chevy Colorado and 2023 GMC Canyon. MBRP claims that the new exhaust ...