The Yukon Grizzly Locker is the ultimate in mechanical locking differentials for street, off-road, and drag racing. Grizzly Lockers provide 100 percent power to both tires, while still allowing for disengagement while negotiating turns.
Details:

• Fits 2.5 ton Rockwell with 16 spline axles
• Installs into standard open carrier
• Patented internal design reduces common locker failures
• 8620 internals for added strength
• 8620 Alloy Carrier
• Assembled in the USA
• 1 Year Warranty Against Manufacturer Defects
• Sold As Each

Technical Notes:

• This unit does Not use the factory thrust washers
• Failure to remove the factory thrust washers will cause the unit to act improperly and can cause damage to the unit