I just replaced the stock seat foam on my street legal '03 WR450 with the Guts Racing "soft" seat foam. It feels like your sitting on a pillow compared to the stock seat. I rarely sit when riding off-road, but for the pavement it's nice. FYI - When re-installing the seat cover do yourself a favor and get an air powered 20 gauge wide stapler. It makes life much, much easier. I bought a cheap one from Harbor Freight for $19.99 and it worked great plus it shoots standard staple gun T-50 staples.