2010 Exhaust Pipe Buyer's Guide
By DR Staff
There are many reasons a dirt rider would be shopping for a new exhaust pipe. Some are searching for more power; in our opinion smarter riders are looking for more effective power. Those a little higher up the intelligence scale are looking to make their machines legal for where they ride. The truly enlightened seek sound reduction. We hate to look too closely at the impulses that lead most of us to simply appreciate a new exhaust because it looks cool, but even the most anti-bling among us is susceptible. Although we sincerely hope they are becoming extinct, there are those who still think louder is better and desirable. Regardless, pipes are a common and important buying decision.This is more than your normal listing of products.
We asked each manufacturer to supply a pipe that was representative of its lineup. We could have asked for every pipe made for one or two bikes, but what if you don't own that bike? In our experience each company has general uniformity in its design and testing, and therefore performance trends are similar across multiple bikes. So, if you get a pipe from a company for a Kawasaki KX250F and a pipe for a Honda CRF450R from the same company, both pipes will usually have a similar effect on power. We asked the companies to pick the bike it wanted to have tested. The categories were four-stroke MX, four-stroke off-road, two-stroke MX, two-stroke off-road and playbike. In cases where there are pipes that are distinctly different in performance, we allowed each type to be submitted. That meant that full-line companies like FMF and Pro Circuit had more products tested. We tested every pipe at multiple locations. Each unit was carefully weighed on a certified postal scale. Finally, at the conclusion of our comprehensive exhaust system test, we had sound expert Chris Real from DPS Technical/Chem-Help sound test each and every combination. In this test we opted not to cater to the group of riders who want a louder pipe. We set sound parameters for the popular SAE 20-inch test used universally in enforcement as well as the new FIM full-throttle test measured from two meters.