E55, CLS55, SL55, S55, AMG M113k Belt Wrap Kit Cooling We have upgraded pulleys available

We have upgraded pulleys available from some of the best and proven brands on the market

are known to fail from the high heat and dirty conditions under the hood

Flash tune within the comfort of your own garage via the OBDII diagnostic port of your vehicle using My Genius handheld programmer

Firmer shifts

Replace your idlers with UPD`s performance idler set today

E55, CLS55, SL55, S55, AMG M113k Belt Wrap Kit Cooling We have upgraded pulleys availableUPD 55K Belt Wrap Kit Designed to stop the slipping of the belt under boost pressure and braces the double idler kit for added strength. 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 idlers, that are known to fail. Specs: Prevents loss of boost under full throttle , thus increasing power equally across the