The Diesel Site Wicked Wheel 2 WWLB7 for your 2001-2004 GM 6.6L Duramax LB7 offers superior surge protection and performance! Each Wicked Wheel 2 from Diesel Site has been tested in multiple wheel configurations of blade numbers, dimensional changes and pitch adjustments before coming up with the absolute best results for each application. The unique design of the Wicked Wheel 2 will provide you with increased performance, boost, reduced EGT's and faster spool-up over the original cast wheel.