Everything about the Yukon Grizzly Locker is hardcore, its casing and gears, its advanced gear tooth design, and its impact on traction and performance. The Yukon Grizzly Locker is a mechanical positive-locking differential that’s engineered for rock crawling, serious trail running, off-road racing, and drag racing. The unit provides 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly Locker is a patented design that features innovations that make it tougher than the competition. Its inner clutch teeth have a larger radius at the base, which offers up to 350% greater strength versus back-cut designs. The Grizzly Locker’s larger teeth also resist breakage caused by shock-loading or catastrophic axle failure. It’s a serious piece of mechanical engineering for serious driving conditions.

Vehicle Fitment

Years	Make	Model	Trim
2004–2013	Chevrolet	Express 3500	Base
2004–2013	Chevrolet	Express 3500	LS
2006–2013	Chevrolet	Express 3500	LT
2001–2004	Chevrolet	Silverado 2500	Base
2001–2004	Chevrolet	Silverado 2500	LS
2001–2004	Chevrolet	Silverado 2500	LT
2004	Chevrolet	Silverado 2500	WT
2001–2005	Chevrolet	Silverado 2500 HD	Base
2015–2018	Chevrolet	Silverado 2500 HD	High Country
2001–2006	Chevrolet	Silverado 2500 HD	LS
2001–2018	Chevrolet	Silverado 2500 HD	LT
2007–2018	Chevrolet	Silverado 2500 HD	LTZ
2003–2018	Chevrolet	Silverado 2500 HD	WT
2007	Chevrolet	Silverado 2500 HD Classic	LS
2007	Chevrolet	Silverado 2500 HD Classic	LT
2007	Chevrolet	Silverado 2500 HD Classic	WT
2001–2005	Chevrolet	Silverado 3500	Base
2001–2006	Chevrolet	Silverado 3500	LS
2001–2006	Chevrolet	Silverado 3500	LT
2004, 2006	Chevrolet	Silverado 3500	WT
2007	Chevrolet	Silverado 3500 Classic	LS
2007	Chevrolet	Silverado 3500 Classic	LT
2007	Chevrolet	Silverado 3500 Classic	WT
2015–2018	Chevrolet	Silverado 3500 HD	High Country
2007–2018	Chevrolet	Silverado 3500 HD	LT
2007–2018	Chevrolet	Silverado 3500 HD	LTZ
2007–2018	Chevrolet	Silverado 3500 HD	WT
2003, 2005–2010	Dodge	RAM 2500	Laramie
2006–2010	Dodge	RAM 2500	Power Wagon
2003–2010	Dodge	RAM 2500	SLT
2006–2007	Dodge	RAM 2500	Sport
2003–2010	Dodge	RAM 2500	ST
2008–2010	Dodge	RAM 2500	SXT
2010	Dodge	RAM 2500	TRX
2006–2007	Dodge	RAM 2500	Trx4
2003	Dodge	RAM 2500 VAN	Base
2003–2010	Dodge	RAM 3500	Laramie
2003–2010	Dodge	RAM 3500	SLT
2006–2007	Dodge	RAM 3500	Sport
2003–2010	Dodge	RAM 3500	ST
2008–2010	Dodge	RAM 3500	SXT
2007	Dodge	RAM 3500	Trx4
2001–2008	GMC	Savana 3500	Base
2006–2008	GMC	Savana 3500	LS
2006–2009	GMC	Savana 3500	LT
2003–2005	GMC	Savana 3500	SLE
2001–2002	GMC	Savana 3500	SLT
2002–2004	GMC	Sierra 2500	Base
2001–2002	GMC	Sierra 2500	SL
2001–2004	GMC	Sierra 2500	SLE
2001–2004	GMC	Sierra 2500	SLT
2003–2004	GMC	Sierra 2500	WT
2002–2005, 2015–2018	GMC	Sierra 2500 HD	Base
2011–2018	GMC	Sierra 2500 HD	Denali
2001–2002, 2006	GMC	Sierra 2500 HD	SL
2001–2018	GMC	Sierra 2500 HD	SLE
2001–2018	GMC	Sierra 2500 HD	SLT
2003–2014	GMC	Sierra 2500 HD	WT
2007	GMC	Sierra 2500 HD Classic	SL
2007	GMC	Sierra 2500 HD Classic	SLE
2007	GMC	Sierra 2500 HD Classic	SLT
2007	GMC	Sierra 2500 HD Classic	WT
2002–2005	GMC	Sierra 3500	Base
2001–2002, 2006	GMC	Sierra 3500	SL
2001–2006	GMC	Sierra 3500	SLE
2001–2006	GMC	Sierra 3500	SLT
2004–2006	GMC	Sierra 3500	WT
2007	GMC	Sierra 3500 Classic	SL
2007	GMC	Sierra 3500 Classic	SLE
2007	GMC	Sierra 3500 Classic	SLT
2007	GMC	Sierra 3500 Classic	WT
2015–2018	GMC	Sierra 3500 HD	Base
2011–2018	GMC	Sierra 3500 HD	Denali
2007–2018	GMC	Sierra 3500 HD	SLE
2007–2018	GMC	Sierra 3500 HD	SLT
2007–2014	GMC	Sierra 3500 HD	WT
2013–2018	RAM	2500	BIG Horn
2011–2018	RAM	2500	Laramie
2014–2015	RAM	2500	Laramie Limited
2011–2018	RAM	2500	Laramie Longhorn
2016–2018	RAM	2500	Limited
2013–2015	RAM	2500	Lone Star
2012–2016	RAM	2500	Outdoorsman
2011–2018	RAM	2500	Power Wagon
2011–2018	RAM	2500	SLT
2011–2013	RAM	2500	ST
2013–2018	RAM	2500	Tradesman
2013–2018	RAM	3500	BIG Horn
2011–2018	RAM	3500	Laramie
2014–2015	RAM	3500	Laramie Limited
2011–2018	RAM	3500	Laramie Longhorn
2016–2018	RAM	3500	Limited
2013–2015, 2017	RAM	3500	Lone Star
2011–2018	RAM	3500	SLT
2011–2013	RAM	3500	ST
2013–2018	RAM	3500	Tradesman