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ZPAK™ is the patented, single-sided clutch system that outperforms OE in torque and heat capacity without coning. For new OEM platforms, the ZPAK design can reduce the overall size of the clutch pack for a smaller, lighter assembly with greater thermal capacity. On existing designs, the single-sided plate can increase torque capacity and reduce core temperatures for a significant reduction in hot spotting and greater clutch life. ZPAK also takes the heat without coning. When used with the revolutionary GPZ friction material developed by Raybestos, the ZPAK system outperforms OE by as much as 30%. (*Mfg. Under U.S. Pat. 6,484,853 B1). Notable applications include Chrysler 68RFE, GM 6L80/6L90, and GM 4L60E.
Enhanced performance rebuilds.
Use the “find parts” search located at the top of the page to find exactly what you need for your next rebuild.
Use the “find parts” search located at the top of the page to find exactly what you need for your next rebuild.
Raybestos Powertrain Sales & Product Development Support Engineer, Irvin Gers explains how Torqkits are designed to increase the capacity of a clutch pack, and how ZPaks not only increase capacity but also are designed to create cooler temperatures during apply and reduce hot spotting of the steel clutch plates within automatic transmissions.
"The GM 4L60E 3/4 clutch ZPak is the ultimate creation and is an engineering marvel! I want to thank you for your relentless pursuit of perfection in the powertrain industry. My grandfather and my dad used your powertrain products when automatic transmissions were new technologies. Keep up the great work, and we'll keep those trannys changing gears with your great products."
- Rodney O.
