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[ame=http://www.youtube.com/watch?v=wlMuVXH57IE&feature=plcp]Payload Increase for your Raptor with the 4" Fox Bump Stops - YouTube[/ame]

RPG (Raptor Performance Group)

offers the 4.0 bump that will increase the SVT Raptors Payload.

Try contacting them for more info.

Good Luck.

P.S. Get the Raptor...haha