Feature: BHP & Torque gains across entire RPM range Forged CAD designed & CNC'd from 6061 Aluminum Billet Balanced and heated treated to T6. Hard anodized in Titanium colour It is smaller in diameter and 50% lighter than the OEM pulleys they replaced, hence maximize the reduction in weight on the crank. This reduction in weight reduces the moment of inertia allowing your engine to respond faster to throttle inputs and perform better at all RPMs. On a standard 2.0TS 16V engine, we have managed to consistently gain more than 8bhp and 10Nm. Material: T6 Aluminum Billet. Increase 10% - 25% Horse Power. Fuel Saving: 10% - 20%. Weight Compare to Original Crank Pulley: 60% - 90% Lighter. Performance and Reliability Guaranteed. Brand New Sealed In Box.