CUSCO 6A1 733 A Aluminum pully for SUBARU WRX STI (VAB) ymm_21 Skylark 1975-1979

Skylark 1975-1979

000psi Thread Size 3/8-16 Fastener Style: Bolt

This system is designed to fit vehicles with and without NPP

The device includes an integrated on/off switch and interchangeable faceplates for adaptable appearance and functionality

The Polyphonic Harmonizer behind the muffler can be replaced with muffler 60679 to achieve the quieter S-Type sound level

CUSCO 6A1 733 A Aluminum pully for SUBARU WRX STI (VAB) ymm_21 Skylark 1975-1979CUSCO Blue Light Weight Aluminum. Weight reduction resulting less stress on an engine and better acceleration Features: Crank pulley : 790 g (1. 74 lbs) vs 2. 3kg (5. 07 lbs) Stock pulley Alternator pulley : 76 g (0. 16 lbs) vs 300 g (0. 66 lbs) Stock pulley Installation time about 2 hours