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With 1,000-horsepower capability, the Ram single-iron-disc clutch is a great choice. These are custom-built units with base static pressures beginning at 150 pounds for higher rpm small-blocks, and up to 1,800 pounds for larger cubic inch, lower rpm engines. Counterweighted levers are used for clutchless transmission applications, while standard levers are for full-shifting vehicles. The 5135-compound, sintered-iron disc allows the clutch to work, or ‘slip’ as needed in order to get the vehicle to launch smoothly, without overpowering the tires. Based on the 11-inch, long-style clutch cover, the unit uses a nodular iron pressure ring and significantly lower static pressure than would be used with conventional discs.