STILLEN 400337 Standard Performance Lightweight Crank Pulley - 03-06 350Z / G35 Sedan / 03-07 G35 Coupe / 03-07.5 FX35 / 03-06 M35 Standard Sized Lightweight Crank Pulley; Billet Aluminum CNC Machined at STILLEN OEM Pulley Weight: 6.23 lbs.; STILLEN Pulley Weight: 1.70 lbs. Suitable For Use with STILLEN Supercharger (Single Throttle Body Engines Only)