Adjustable Cam Pullies. Trick 4 Valve. 748, 851, 916, St, S4 S4R
Lightweight kit includes:
2 pulleys for shaft: diameter 53 with 18 teeth
4 adjustable pulleys for the camshafts: 53 with 18 teeth complete with hub lightweight made in Ergal.
The pulleys are made from Ergal 7075 T6 and have a hardoxidation of 50 microns.. Fits 748, 916, 851, 888, 996, s4, s4R, st4 st4s. Lets you dial in the cam timing for optimum grunt. Lighter than those steel boat anchors the factory install. Smart.
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