On Sale! Only 325.00!  

Special edition black brackets and silver idler Belt wrap kit and idler pulley, with Gates performance belt. 

Ultimate Performance supercharger belt wrap kit. Designed to stop the slipping of the belt under boost pressure to maintain maximum boost under full throttle and brace the weak factory double idler pulley that fail under load on this engine. This is must have easy bolt on, performance gain and preventative maintenance kit.  Comes with new high quality Gates belt, all hardware and additional Black main brackets and black Billet pulley. 

Other pictures shown of silver BWK are for fitment pictures.  

Also fits all G55 (G wagon) with m113k engines 2005-2011! Eliminates belt slip on stock or modified supercharger pulley`s. Braces OEM double idler bolt that is known to flex and fail.

Belt with this kit is sized for oem specs or 83mm supercharger pulley to stock 90mm. If you have other mods to your pulleys, let us know so we can size the correct belt. 

Specs:

• Prevents loss of boost under full throttle , thus increasing power equally across the power band. 
• Easier and consistent tuning Increases belt wrap on both crank and supercharger pulleys 
• Kit comes with instructions, all hardware, 1 idler pulley and brackets
• reduces slip and improves boost from 1-2.5 PSI
• ultra high quality and on the market longer than any other kit
• on the market for 10 years now!
• Increases tune ability
• Please provide crank  and SC pulley size to get correct belt size if other than standard listed below.
• All kits come with Gates black belts and are shipped to fit 83mm to stock size supercharger pulley and stock crank pulley. If you need custom size, let us know and we may be able to accommodate those sizes.    
• Easy install