JDM combines the 2.60 upper pulley kit and the Auxiliary idler pulley kit together for a significant price discount. The 2.60 upper pulley will add approximately 4 more pounds of boost to the factory supercharger. This will increase the power out put approximately 40 RWHP. A custom tune is suggested with the use of this pulley. In place of a shorter belt JDM uses an auxiliary idler pulley to increase belt tension. This pulley has 3 different setting positions to take up the correct amount of belt slack depending on the size of your supercharger pulley. Installation time takes less than 2 hours.
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