Few upgrades feel as good as a new exhaust. The bark changes, the bike feels angrier, and there is real power on the table. But exhausts also move the power band, which is why this 201m drag bike game guide exists: to keep your shifting honest after you bolt one on.
What an exhaust actually does
A freer-flowing exhaust lets the engine breathe, adding power mostly at the top of the rev range. That sounds perfect for racing until you realize your whole shift timing was built around the old power curve. More top-end also means the engine note at your old shift point now arrives earlier in the pull.
Re-learning your shift points
After any exhaust change, go straight to free ride and do ten launches listening only. Find where the new note flattens at the top of the revs: that is your new shift point. Do not race until it is automatic. The shifting masterclass has the full by-ear method.
Matching exhaust to build
Pair exhaust choice with the rest of the build from the parts guide. A top-end pipe on a torque-tuned engine fights the build; a mid-range pipe on a rev-happy engine leaves power on the table. Match the pipe to where your engine already makes its power.