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The FTI Performance 9.5in Street Racer SRL billet lock-up torque converter for 4L80E/4L85E transmissions is an LT 4000 hard-hit stall unit intended for extreme stall requirements while preserving lock-up for road use. SRL features a CNC-machined billet front cover and a billet lock-up piston to limit premature clutch wear. Combined with custom stator and pump designs, furnace‑brazed and heli‑welded fins, severe‑duty sprague and an anti‑ballooning flanged impeller hub, it’s built for rugged reliability.
FTI 9.5in 4L80E/4L85E Billet Lock-Up Street Racer Series - LT - 4000 Hard Hit Stall
