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USD 1066.89
Part #: RRYGLF10.25-35

Yukon YGLF10.25-35 Grizzly Locker for Ford 10.25" (35-Spline Axles)

For 35-Spline Ford 10.25" & 10.5"
Part #: RRYGLF10.25-35
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The Yukon YGLF10.25-35 Grizzly Locker for the Ford 10.25" & 10.5" Differential is the ultimate mechanical locker approved by NASCAR and chosen by Ultra4 Off-Road racing as the locker of choice. This automatic, speed sensing locker is built to devour the most challenging desert racing, trail rides and hill climbs you can run. Built with stronger materials including stronger internals and cases, with patented design features increasing strength and durability. Yukon Grizzly Lockers lead the industry with new applications every year while winning in off-road, desert, and drag racing performance. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns.

  • Fits Ford 10.25" & 10.5" (With 35 Spline Axles)
  • 8620 Internals For Added Strength 
  • Patented Internal Design Reduces Common Locker Failures 
  • Assembled In The USA 
Compatible Differentials
Ford 10.25"
Ford 10.5", '07 & older
Ford 10.5", '08-'10
Ford 10.5", '11 & up.

Compatible Make / Model
Ford E-250 3/4 Ton (1985 - 2015)
Ford E-350 1 Ton (1985 - 2015)
Ford E-450 (2000 - 2015)
Ford E-550 (2002 - 2003)
Ford Excursion (2000 - 2005)
Ford F-150 1/2 Ton (2000 - 2013)
Ford F-250 3/4 Ton (1985 - 1999)
Ford F-250 Super Duty 3/4 Ton (1997 - 2015)
Ford F-350 1 Ton (1985 - 1997)
Ford F-350 Super Duty 1 Ton (1997 - 2015)

Application Note:
Compatible Makes & Model Chart is for reference only. 
You must physically confirm the specific differential type in your vehicle for proper fitment as factory options may vary. 


  • MFG. Number YGLF10.25-35
  • Manufacturer Name Yukon Gear & Axle
  • Shipping Weight 36.32 lb.
  • Shipping Length 11 in.
  • Shipping Width 10 in.
  • Shipping Height 11 in.
  • Fuel Type Diesel / Gas
  • Axle Type Ford 10.25"
  • UPC 883584280262
  • Warranty Yes
  • Warranty Info 1 Year
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Internal L3.00R2.00


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Questions and Answers

Would like to know if this would fit my 1999 F-550 with a 10.50" rear?
View Staff Answer 
As long as it is a confirmed 10.50" rear, then it should work for you.
It says the yukon will disengage while negotiating turns.. What if i have ice or snow around a turn?
View Staff Answer 
Automatic lockers like the yukon grizzly locker are great for providing extra traction. Unfortunately, this is a double-edged sword as far as slippery road conditions go. Inexperienced drives may find it difficult to negotiate wintery conditions with an automatic locker. In order for the locker to disengage around turns, both tires need to have traction. Once there is a difference in tire speeds, the locker will disengage allowing the axle to perform as an "open" unit. In a low-traction turning scenario, the locker is going to do its job of keeping both tires turning at the same speed but there will not be enough of a speed differential to cause the locker to disengage. In a rear differential application, this would cause the rear end to feel loose and "wander". In a front differential application, this would cause understeer. The vehicle will perform much differently in wintery conditions so drivers will need to make adjustments to their driving habits when using an automatic locker.
Do i also need to buy gears have a 08 f350
View Staff Answer 

The YUKON YGLF10.25-35 GRIZZLY LOCKER will NOT include a ring & pinion set. They are sold separately.

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