Both make excellent friction plates. Borg-Warner is the OE supplier for most GM, Ford, and Allison applications. Raybestos has stronger HD and racing offerings. Most rebuild kits use one or the other.
OE supplier for 4L60E, 4L80E, 6L80, 6R80, 5R110, and Allison 1000 from the factory. Made with proprietary friction compound that matches OEM clutch apply curves. Best for: stock rebuilds where customer wants OE feel.
Aftermarket specialty. Offers GPZ Performance, Stage-1, and Pro Series tiers. Higher coefficient of friction, better heat tolerance, used in performance and tow applications. Best for: tow rigs, performance vehicles, lifted trucks, taxi/police duty.
Borg-Warner OE: rated to 350°F sustained.
Raybestos GPZ: rated to 425°F sustained.
For trucks that tow above 8,000 lbs or off-road heavy use, the Raybestos GPZ upgrade prevents friction-plate glaze under heat.
Borg-Warner OE: $25-40 per pack. Raybestos GPZ: $45-70 per pack. The Raybestos premium is worth it on any truck that hauls or any vehicle that runs hot during normal use.
Direct-from-the-pro pricing. Free shipping over $75. Same-day handling Monday-Friday.
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