The best just got better! Proven by Pro Stock Champion Warren Johnson, the new lightweight Fluidampr is available to all drag racers with Chevy powerplants. Lighter without sacrificing damper performance. So, you can be rest assured that your engine is protected against destructive harmonic vibration. Quicker ETs. Faster top end mph. Less rotating mass. Stamped timing marks from 0° to 50°, 90°, 180° and 270°. Aluminum hous-ing, laser welded. Hard anodized. Only 6 pounds.