I have installed Max 1 slip-ons from B&E Performance on my 08' Ultra. I love these pipes. The sound level and tone is exactly what I was looking for. The stock sound at 80db was good but I wanted a little louder. I first ordered the Max 2 slip-ons but at 95db was way too loud for me. But the Max 1's at 88db was perfect. They are as loud as my buddies Reinharts. I'd reccomend these pipes to anyone who wants a louder sound without going over the top at a great price.