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Reviews (2)

Jun 27, 2018
Better than stock clutch.

Jul 03, 2019
The Bomb DRZ
1 of 1 found this helpful Installed the power bomb header on my 2008 DRZ 400s in place of the stock header which slipped into a Pro Circuit exhaust. The diameter of the slip on pipe for the Pro Circuit exhaust had to be expanded. I took it to a local muffler shop that expanded it for $10. The new header and exhaust fit together snuggly. Upon starting up the motorcycle, I noticed a lower, throatier sound which was pretty cool. Took it out for a test run and felt there was better throttle response and acceleration from the low end. I really dig the sound. i think it should produce a little more torque for hill climbing.
NOTE: The stock carburetor had already been jetted (not sure of the specs) and I had already cut the 3 x 3 opening in the top of the air box under the seat. I believe the Power Bomb header further supplemented the gains in power achieved from these 2 other mods.