C.A.T SFI certified import & compact engine elastic damper pulley kits are manufactured from 1020 low carbon steel alloy. The sulfated elastic rubber is pressed in between inner and outer rings. Damper pulley kits are random tested under 15 tons press without separation and deterioration. The undersized pulley gives more horsepower. The damper is tested to 12,500 RPM for explosion proof and in compliance with SFI 18.1 specification. Surface is coated with plastic paint for smooth ans rust resistance.