I have had them for about four months. They are loud when clean; holy vibrations bat man loud. But when they get just a bit of mud, they quit. I honestly think it is the mud build up in the foot peg channel that keeps it down. It hasn't rained here in over a month or so, so no mud, but if it works I may just fill it with silicone.
All that being said, I didn't notice too much mud build up, and I liked the fact that I had "other" locations to put my feet while riding, and that no sticks come up. Others have made comments about potential mud build up.
They are not easy to put on, do not tighten anything until you get all the bolts in and they haves no instructions. But overall, I like them.
2008 Honda TRX 700 - 13T, Uni-Filter, FMF Programmer, PRM Side Bars, Desert Bumper and Skid Plate, CCP Steering Stabilizer, Elka Shocks on all four corners, Kyle8ton Anti-Sway Bar
2008 KTM 990 ADV
2008 KTM 450 EXC-R
2008 KTM 85XC (Son's Bike)
2010 Polaris 200 (Daughters Bike)
2009 Honda Recon 250
2007 John Deere Gator
2007 Honda TRX 500 4x4
2003 Polaris Sportsman 6x6
2002 Sherco 250