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Friction Ring

Part No.


298mm LU (250C, 350C, 200-4R, 4L60 & E), 4L60-E (300mm), 4R100, 5R110W, 6-Stud

  • Friction Ring


Bonding Pressure Calculator

Enter the details of your bonder's ram/piston and the friction ring you are bonding into the calculator here to find the piston pressure required to create the desired pressure at the ring.

Bonding Pressure Diagram

Friction Ring

Part No. B66250HTL

  • Outer Dia.: 11.125"
  • Inner Dia.: 10.000"
  • Thickness: 0.066"
  • Material: HTL
  • Friction Ring

High Thermal Engaging (HTE) has the thermal capacity of Kevlar®, with improved consistency and shudder resistance for today's demanding applications.

  • Dark gray
  • .045" or .066" Thickness
  • Replacement for Tan or Kevlar material.

High Thermal Lockup (HTL) has high thermal and exceptional torque capacity required for the most demanding torque-holding applications.

  • Khaki
  • .066" Thickness

Extreme Torque Lockup (XTL) provides 30% more torque holding capacity than HTL and is only for extreme duty lockup applications.

  • Dark gray/green
  • .050" Thickness
  • Only available in a few sizes for severe applications

High Thermal Slipping (HTS) is designed for slipping applications which require high thermal capacity, and is the benchmark for consistency, durability and shudder resistance.

  • Gray/green
  • .045" or .066" Thickness
  • Replacement for spun-wound, woven or other carbon based materials.
Learn more about BorgWarner Friction Rings