Tilton adjustable hydraulic throw-out bearing for GM TKX, TKO 500/600, Legend Transmissions. Features Billet aluminum body and piston precision machined at Tilton Stainless steel threaded sleeve offers nearly 1.25" of adjust-ability High temperature mono seal design features a quad tensioner to ensure proper seal tension and the highest reliability Constant contact design self adjusts for clutch wear and maintains the same pedal feel throughout the clutch's life Newly designed swivel fittings have been thoroughly tested to insure against leakage High-quality flat face bearing with 1.71" - 3.03" contact diameter fits most 8.5" - 11" bent-finge and lever-type clutches Includes Hydraulic release bearing, stainless steel adjustment sleeve, steel bolt on guide tube, steel braided supply and bleed lines, anti-rotation bolt and high-strength transmission bearing retainer bolt. Applications GM Tremec TKX, TKO 500/600, Legend transmissions 8.5" - 11.0" bent-finger and lever-type clutch (most) Recommend using 3/4" bore master cylinder with 1.4 " stroke.