Has your Harley M8 outgrown its exhaust? Discover 8 signs your engine upgrades may require a better-matched performance exhaust system.

CJ has been watching Cal’s motorcycle for two weeks. When she finally gets close enough to inspect the exhaust, she notices something the others missed: the welds aren’t simply holding it together. They’re exactly where somebody wanted them.

Follow grassroots racing novice Chase French through his first full Bagger Racing League season as he races an M8 Softail and Road Glide while chasing a BRL championship.

A stranger rolls into a Midwest Harley racing night and quietly beats Jimmy’s M8. Nobody knows who he is—or why his bike is so fast.

Race Mufflers Keep You on the Track not the Paddock. Track noise limits can end your race before it starts. See how Burns' Single & Two Stage race mufflers balance sound reduction, exhaust flow and performance to help keep your vehicle on track.

Discover 10 essential tools every serious Harley performance builder should own for measuring, diagnosing, fabricating, tuning and verifying performance.

Learn how to install a Burns Stainless NhB exhaust on a Harley-Davidson M8 Bagger, including alignment, O2 sensors and final inspection.

Avoid 10 common Harley M8 exhaust mistakes and learn how tubing, collectors, dyno data and riding style shape real-world performance.

Learn why merge collector outlets are often smaller than expected, how RPM affects collector Venturi size, and how to find the correct outlet for your engine. A properly sized collector outlet—often called the collector Venturi—can improve exhaust velocity and pressure-wave behavior. Making the outlet larger does not automatically increase power. In fact, an oversized collector outlet can hurt performance in parts of the RPM range.