a.k.a. Tundra Racing


$2,500.00 $2,298.00
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    This disc brake conversion kit uses much of the O.E. Lexus IS-F Rear Disc components and is a direct bolt on replacement for the stock drum brake system. 
    It is available with drilled or slotted rotors. Enhances performance and looks great! Retains proper ABS function

    Exclusive product developed by SOS Performance using Stoptech calipers, rotors, pads & s.s. line kit. 2 week lead time on this kit.

    X Runner ST41 Rear Disc Brake Conversion Kit includes:
    Pair of Stoptech ST-41 4 Piston Calipers
  • Pair of 345mm Smooth, Drilled or Slotted vented discs 
  • Set of Stoptech 308 series pads.
  • Pair of Stoptech stainless steel braided brake lines (DOT compliant)
  • All hardware included.
  • Pair of CNC Laser cut mounting brackets w/ black powdercoat
  • Set of Lexus parking brake internal components
  • Parking brake cables
  • Installation Manual
  • Our master cylinder upgrade is suggested but not required.
  • 1 week leadtime on this kit
  • Note: This kit includes parking brake option. However the OEM drum parking brake is superior to the the rear disc conversion parking brake for 2 reasons. 1) the oem parking brake shoes are larger & have approximately 50% more friction surface. Also the OEM drum diameter is larger in diameter as compared to the drum inside the rotor. 

TR.345.4.XR Replacement Parts