2.5 inch tensioner pulley JRSC supercharger B and D m10x1.5 Version 5 and 6 are

Version 5 and 6 are Perfect for dual exhaust cars a matching pair flat cut tips

Only tighten against the jam nut (not included)

* 11mm thick Stainless steel flange (we are the only company using stainless steel flange on the market today most companies choose mild steel flange to cut down cost) we think this is a must-have especially in an area where humidity is high and rust can start in a few short months with mild steel flange

*Black anodize coating

All K20 K24 vehicles and classic car with k20 k24 swap

2.5 inch tensioner pulley JRSC supercharger B and D m10x1.5 Version 5 and 6 are1320 performance 2. 5" pulley used on the lower B Series JRSC Alternator bracket and will work on both of the D series pulley found on the Jackson Racing supercharger kit. our 2. 5 stainless steel tensioner pulley with dual Genuine OEM quality NSK Japan high speed bearings we raised the edge of the pulley to prevent the belt from "walking" off the tensioner. This listing is for the pulley only nothing else. complete B series lower alternator bracket