I just installed my Rox 3 1/2" handle bar risers,and I'm very impressed.They come in 2",3 1/2",and 5" sizes.If you have a IMS 5.6 gallon tank and use MX style bars the 3 1/2" risers are a must so your bars don't hit the tank.They install easily in about 20 mins.Check them out at : www.roxspeedfx.com
If any one needs these PM me and I know a guy that sells these cheaper then what Rox does on ther web site.