Lock & Load With Yukon Traction Devices – Dura Grip LSD, Zip Locker, Grizzly Locker
Yukon has tried-and-proven traction devices designed to handle all types of tough terrain. Choose from the Yukon Dura Grip limited slip differential, Yukon Zip Locker, or the Yukon Grizzly Locker. In order to make a more informed choice, here are some factors to consider when looking at traction adders.
Differences Between LSDs & Lockers
In their static state, limited slip differentials are pre-loaded and provide traction to both wheels. When the LSD is further loaded under acceleration, in a fast corner, or when wheel slippage occurs off-road, the clutch packs limit wheelspin across the drive axle by permitting the axle shafts to spin at different speeds while continuously trying to balance the application of torque between the two axles. This results in transferring more power to the wheel with the best traction.
Lockers produce 100% lock-up where all the power is directed to both tires when the unit is engaged. Lockers are tougher than limited slips. Limited slip differentials do not generate 100% lock-up and do not require activation from the driver. Their engagement is mechanical, reacting to driving conditions such as load and wheel slippage.
Yukon Dura Grip LSD
The Yukon Dura Grip is a great choice for transforming an open differential into a highly capable unit that can provide two-wheel grip when needed. Engineered for long life and completely rebuildable, Dura Grips feature a high-strength nodular case, forged 4320 chromoly spider gears, and composite clutches.
In clutch-type LSDs like the Dura Grip, the spring array applies pressure to the side gears, which puts
pressure on the clutch packs in the outer part of the carrier. Both axles receive equal pressure and
traction. When a tire starts slipping, the clutch packs engage with different resistance to maintain
synchronization between the tires, transferring more torque to the tire with the best grip.
Rebuilding a Dura Grip involves replacing the clutches in the unit. Clutches can be replaced to restore original performance, or non-stock clutches and springs can be used to fine-tune performance for specific driving or racing styles.
Differences Between Yukon Zip & Grizzly Lockers
The primary difference between these two lockers is actuation. The Yukon Zip Locker is air actuated, while the Grizzly is a mechanical locker.
An advantage of an air-actuated locker like the Zip Locker is the ability to choose when to engage the unit, along with superior on-road performance. A drawback is the need to purchase and plumb an air system to operate the locker.
Mechanical lockers like the Grizzly are always active, providing 100% lock-up at all times, including on
the road. On-throttle conditions induce locking, while off-throttle situations partially unlock the unit.
During turns, the unit may produce a loud clicking sound as the gears ratchet, which may be undesirable
for vehicles that spend significant time on the street.
The bottom line is that Yukon is a one-stop traction destination, offering products for all levels of performance, from daily drivers and weekend warriors to dedicated rock crawlers and drag racers that demand maximum traction.
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