Exhaust & CarburetionNot too many years ago, one of the quickest ways to increase the performance of your motorcycle was to pull off the heavy and restrictive stock exhaust system and replace it with a lighter, higher-flowing aftermarket one. Well, there's no free lunch, and the after-market units were significantly louder than stock--negating, through the ill will of the general public, some of their impressive perfor-mance gains.
Two things have happened in recent years, though. First, the OE systems have become significantly lighter and capable of flowing almost as much volume as aftermarket systems. Because of the improvement in stock systems, you can no longer count on instan-taneous double-digit percentage of power increase after mounting an aftermarket exhaust. Similarly, replacement exhaust manufacturers have become more socially conscious in their approach to making less noise with their systems while still offering improvements in power delivery.•
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