Benefit from faster revving (and subsequent turbo spooling) due to reduced inertial losses caused by the overweight OEM pulley. This pulley is NOT underdrive and will therefore not underdrive the alternator (which causes charging problems).
This billet aluminum crank pulley is the lightest availabe at just 1.3lbs (590g).
This pulley fits all Mk4 Golf, Jetta, GLI, New Beetle 1.8T and 2.0 engines, as well as all Audi TT MK1 1.8T 180hp and 225hp variants. It is also compatible with ABA engines with the 16v head swap, G60 Limited 16v, and 1.8T setups using ABA brackets.