Dampened Crank Pulley is a great option for those looking to replace the stock piece. The stock pulley seperates at the rubber and can cause great damage to surrounding accessories and the body of the vehicle when it comes apart. This failure is common with high horsepower and high mileage Supra's. The Titan pulley is SFI approved and legal to go 10.99 and quicker. The pulley is great for street and racing use. We use these on all the street and race Supra's that are built and this is the choice of many champions usign the 2jz in the last 3 years. A must have for anybody who wants to save $ from a costly seperation of the stock pulley.