Performance gains through reduction of rotational mass in the engine is a tried and true concept. Even small changes contribute to overall performance gains.
The T1R CNC machined from premium Forged T7075 Aluminum billet, and maintains the stock diameter while losing about 30% of the stock weight. At just 30%, the engine response and acceleration will greatly improved.
T1R Aluminum pulley has been fully balanced while maintaining stock diameter so it does not affect reliability and does not contribute to increased wear, vibration or noise.