FTI 9.5in 4L80E/4L85E Billet Lock-Up Street Racer Series - LS - 4000 Hard Hit Stall

The FTI Performance SRL Series billet lockup torque converter is a high-performance component designed for demanding street and racing applications. Featuring a CNC-machined billet front cover and billet lockup piston, it significantly reduces premature clutch wear and enhances durability. The converter incorporates custom stator designs and multiple blade angle pumps, allowing stalls from 2,800 to 4,400 rpm to match specific driving needs. Its construction includes furnace-brazed and heli-welded fins, a severe-duty sprague, and an anti-ballooning flanged impeller hub, making it virtually indestructible and capable of handling severe-duty conditions with reliability.

This torque converter is compatible with 4L80E and 4L85E transmissions, specifically designed for 9.5-inch applications. It is suitable for vehicles equipped with LS engines and intended for street, strip, or race use where high stall and lock-up performance are desired. Custom-built to match your exact driving style and needs, it offers a direct bolt-on upgrade for compatible transmissions. Installation typically involves replacing the stock converter, and it is ideal for performance enthusiasts seeking increased torque capacity, improved acceleration, and enhanced durability in demanding driving environments.