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A 4x4 and traction go hand-in-hand; however, standard (open) differentials allow each wheel to turn independently to eliminate binding in turns. Off-road, this becomes a problem as engine power takes the path of least resistance—to the wheel with little or no traction. Limited slip differentials offer some improvement, but too often the slipping is not "limited" enough to maintain forward progress. Automatic locking differentials also have disadvantages; noisy when disengaging, they can also upset on-highway driving characteristics. Created to provide traction on demand, without sacrificing highway driving performance, ARB Air Locker differentials employ a 12 V ARB air compressor (sold separately) to pneumatically operate a solid and durable locking mechanism inside the differential. When activated, the Air Locker prevents the differential gears from rotating and the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates just like a conventional open differential. ARB Air Lockers are available in over 100 configurations for a wide range of vehicles and can be installed in both front and rear axles. Installation should be performed by a qualified differential technician, although no special tools or skills are required, apart from those necessary for fitting a standard differential. ARB also offers three compressor models suitable for Air Locker operation, two of which can be used to inflate tires and operate other equipment. Additional features of ARB Air Lockers include: * Vastly improved traction means less reliance on momentum, reducing the likelihood of vehicle damage * Easy, convenient operation without leaving the comfort and safety of the driver's seat * Ultra durable and extremely strong; only the highest quality materials used in construction * Patented gear technology and 2-piece design ensures optimal locking strength * Forged gears provide superior strength and durability * Incredibly simple, yet effective, design employs minimal moving parts for maximum reliability * Thoroughly tested and proven * Most sold as kits with differential, activation switch, solenoid valve, air line, and bulkhead fittings * Front and rear Air Lockers available for most makes and models * For 4WD and 2WD applications * Easy maintenance; no special additives required * Also offered in ARB Traction Packs that include two Air Lockers, a compressor, and accessories for tire inflation
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$1,299.95
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$1,399.95
$1,104.96
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$1,189.96
On Sale
For Jeep lovers who wish to upgrade their axles, Spicer Drivetrain Products Ultimate Dana 44 crate axle assemblies will give you increased durability and strength, on and off the trail. You can be assured of quality and performance when you rely on an industry leader like Spicer Drivetrain. Features: * Axle tubing 5/16 in. thick * Nickel chromoly steel axle shafts * Steel brackets 1/4 in. thick * 1350 axle shaft U-joints * Nodular iron differential cover
( 1 )
$5,169.99
$4,704.69
On Sale
If it weren't for axles, the wheels on your vehicle wouldn't be moving anywhere. When those all-important parts twist, break, or have other difficulties, simply replace them with Crown Automotive direct-fit axle shaft assemblies. These assemblies are available for numerous axle types, such as CV-style, C-clip, front inner and outer, and bolt-in. While some replacement axles use hardened 4340 chromoly shafts, most are designed and steel-built to OEM specs for reliability and fitment. Each axle is engineered for its particular location and differential. Crown direct-fit assemblies cover many models of vehicles.
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$56.99
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$585.99
$51.29
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$527.39
On Sale
OE axles usually do a good job of getting stock vehicles down the road, but larger tires, a heavy foot, and some wicked terrain are a recipe for disaster. RT Off-Road Performance Axle kits improve torsional and tensile strength 30 percent by using heat-treated 4340 alloy steel. All RT Off-Road Performance Axle kits are sold in pairs and feature rolled splines for greater overall strength; they come with hardware, bearings, and seals. Kits that replace original equipment tapered axles with flanged one-piece axles are also available.
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$352.99
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$559.99
$317.69
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$503.99
On Sale
Spartan lockers are affordable, reliable traction. These USA Standard Gear Spartan lockers are mechanical lockers that fit into a standard differential carrier, replacing the open spider gears. They do not use thrust washers and have a revolutionary spring and pin design to make installation a snap! Spartan lockers feature high-nickel 9310 chromoly drivers and couplers for added strength. Give your vehicle great traction and save some cash. Drop in Spartan lockers for improved traction. They're available for a variety of makes and models spanning more than a half-century.
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$255.00
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$852.99
$229.50
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$725.04
On Sale
Yukon Gear & Axle C-clips keep a secure hold on your axle. These little steel C-clips are mighty important, so they're precision-crafted to stay in the groove and prevent your shaft from sliding out. The replacement clips are available for fitment on more than a dozen axle models. Trust Yukon C-clips for differential maintenance.
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$11.89
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$26.99
$10.11
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$22.94
On Sale
Built to exceed your expectations, Auburn Gear provides a variety of Grip-N-Loc differentials to match most makes and models. They build upon exclusive technologies previously found in their limited slip line—but with more robust construction and materials to satisfy the extreme demands of serious drivers. If you push the limits of performance and traction, perhaps through competition, or simply through extreme weather driving, Auburn Gear Grip-N-Loc differentials offer the best options to fit your application! More product features include: * Upgrades your vehicle for the safe transfer of increased power/torque across the axle * Case material is up to 50 percent stronger than OE cases * Advanced cone clutch technology provides a 25 percent increase in bias ratio/increased traction * Hardened-steel gear materials for confidence in extreme conditions * 2-year warranty
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$514.99
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$794.99
$463.49
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$715.49
On Sale
Yukon Gear & Axle ring and pinion gear and installation kit combos are complete packages that include front, rear, or front and rear ring and pinion sets, along with the most complete master overhaul kits on the market—giving you everything needed to re-gear the front and/or rear differentials in one package. Conceived to handle some of the harshest conditions, these combos utilize the latest design and manufacturing technologies to afford you quiet running gear that's strong and easy to set up. The included Yukon master rebuild kits undergo extensive research to ensure a perfect fit and hassle-free install with the very best components. Order the combo designed to fit your application.
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$524.99
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$1,333.99
$472.49
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$1,133.89
On Sale
Yukon Gear & Axle master overhaul kits are what you need for a successful differential rebuilding. All of the high-quality parts that you need are provided to do your job right. Yukon master kits go through extensive research to ensure a perfect fit and hassle-free install utilizing the best components, including Timken bearings and races! Choose from their huge selection of kits to meet your replacement application. Yukon Gear & Axle master overhaul kits may include: * Pinion bearings * Carrier bearings * Pinion seal * Crush sleeve or preload shims * Pinion depth shims * Carrier shims (varies by application) * Gear marking compound and brush * Pinion nut * Baffles and slingers (varies by application) * Gasket and/or silicone * Ring gear bolts (for application) * 20-page instruction manual
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$184.00
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$694.99
$165.60
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$590.74
On Sale
Yukon Gear & Axle differential carrier cases offer the strength and quality you demand for your ride. Available for many axles and ratios, these cases are constructed from first-rate materials to strict standards, ensuring durable, reliable performance.
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$115.99
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$605.99
$104.39
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$515.09
On Sale
Differentials are the unsung heroes of vehicle performance. Some are open, while others have Trac-Loks, and a few are lockers. Crown Automotive differential carrier rebuild kits are designed and built to keep them working properly. Built to OEM specs for excellent fit and reliable performance. They provide the necessary parts to update each differential and keep power going where it belongs. Differentials put their all into transferring power from the transmission to the axles. When they decide to take a break, put them back to work with Crown Automotive differential carrier rebuild kits.
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$118.99
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$324.99
$107.09
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$292.49
On Sale
Yukon Gear & Axle ring and pinion sets are strong but quiet performers. Designed to handle some of the harshest conditions, these sets utilize the latest design and manufacturing technologies to afford you a smooth running gear that's durable and easy to set up. Yukon ring and pinions are available in hundreds of size, ratio, and axle model options. Whether you're on the street, off-road, or at the track, you'll experience unrivaled power and gear performance. Order the model recommended for your application.
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$286.99
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$892.99
$246.49
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$759.04
On Sale
Maintain the ability to move forward with Crown Automotive differential clutch kits. These kits will renew the operation of your limited-slip differential. Clutch discs and plates can wear from constant use. When one of your rear wheels can't get traction, you'll be glad you replaced your worn-out clutch packs with Crown differential clutch kits.
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$61.99
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$294.99
$55.79
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$265.49
On Sale
Oversize tires and stock manual locking hubs go together as well as water and oil. If you've heard the loud "POP," signaling blown hubs, or wish to be proactive, replace them with Crown Automotive manual locking hubs. These hubs provide greater strength than the stock units to help you crest steep hills, roll through rocks, and slide through mud. Crown Automotive manual locking hubs will have you rocking and rolling.
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$129.99
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$148.99
$116.99
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$134.09
On Sale
Yukon Gear & Axle offers a full line of differential covers to suit your front or rear applications. These replacement covers protect your gears, keep lubricating fluid where it's needed—and on some styles, they offer added cooling and/or strength. Their large selection affords you options of materials, sizes, and finishes to get exactly what you need. Order the model recommended for your axle, differential case design, and engine specifications.
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$40.99
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$410.99
$34.84
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$349.34
On Sale
USA Standard Gear ring and pinion sets are high-quality and precision-machined replacements. They're offered for a wide variety of common and hard-to-find applications, differential case designs, and ratios. The right choice adds confidence to your install; select the USA Standard ring and pinion set recommended for your vehicle.
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$233.99
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$595.99
$198.89
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$506.59
On Sale
Artec Industries JL/JT APEX front axle armor kits include everything you need to make your factory housing the strongest it can be—including APEX front axle truss, front LCA skids, and inner C-gussets. Order the armor recommended for your Jeep application. Product details: * Patent pending APEX truss peaked top design provides more rigidity than a flat top truss design * Truss is CNC precision laser-cut in-house from 1/8 in. mild steel for a lightweight yet strong solution—only 6 lbs. * Truss is CNC precision-bent in-house for a great fitment; literally drop the truss in place on the axle and it's ready to weld—no puzzle piece assembling * Designed using 3-D models directly from Dana Corp and Jeep for an amazing fit and clearances with surrounding components * 70 percent less welding needed than previous truss designs means less warping, faster turnaround, and lower costs * All long seams are bent so you don't need to spend time welding them together * APEX design continues under the OEM coil buckets for complete end-to-end axle reinforcement—an industry first * Dimpled holes provide weight reduction, rigidity, and strength * Contours both the cast steel differential and FAD (front axle disconnect) and can be welded with normal MIG welder and moderate pre-heating and post-heating * Provides worry-free wheeling of up to 40 in. tires on stock JL axles * Bridges the front axle disconnect (FAD/CAD), shown to be one of the weakest sections of the front axle * Low-profile design doesn't go over differential and allows usage in vehicles with only slight lift * Front LCA skids and optional JL Shield are made from 1/4 in. steel * Inner C-gussets are made from 3/16 in. steel
Not Yet Reviewed
$274.99
$206.24
On Sale
Crown Automotive carries a full line of automotive on and off-road ring and pinion gears which are designed to meet original equipment specifications. Whether you're gearing your car for street, strip, or trail, choosing the proper gears will provide more torque to the wheels. Order the size and ratio for precise fitment with your particular axle setup.
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$260.99
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$1,175.99
$234.89
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$1,058.39
On Sale
RT Off-Road mechanical axle engagement systems replace the vacuum actuator with a cable operated actuator that puts the driver in control of the engagement from inside the cab. The axle engagement is much more reliable since it is directly controlled with the cable. Kits are available for Jeeps with a lift kit up to 3 in., and for lifted applications 3 in. or higher.
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$133.99
$120.59
On Sale
Crown Automotive stocks differential case kits that will keep your vehicle moving. They feature rugged steel construction and are available in a selection of assemblies with gear sets, or with shims, gaskets, and ring gear bolts—and many other choices in-between. Replace or build your needed power to keep those wheels turning with help from Crown differential case kits.
Not Yet Reviewed
$170.99
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$1,130.99
$153.89
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$1,017.89
On Sale
Auburn Gear Select-A-Loc differentials maximize your vehicle's traction with on-the-go system engage. These electronically controlled traction-enhancing differentials are selectable lockers offering the traction control of a limited-slip differential and a full-locking differential--all in one! When locker switch is off, the clutch pack activates the limited-slip mode. As torque increases, the separating forces within the differential gears increase, causing the clutch pack to be compressed, in turn providing bias torque to the highest traction wheel. When the locker switch is turned on, electronic current is sent to the electromagnetic coil which locks the axles together. Auburn Gear Select-A-Loc lockers feature a unique cone-clutch design with gearing made from aircraft-quality 9310 heat-treated billet steel for tough-as-nails strength. The lockers operate quietly without any shift fork or pins to line up to change the locker mode. With a limited-slip mode for on/off-road excitement and a true locker mode for the quarter-mile or nasty off-road terrain, Auburn Gear Select-A-Loc differentials deliver superior traction capabilities on the street, at the track, or off-road.
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$1,129.99
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$1,802.99
$1,016.99
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$1,622.69
On Sale
Crown Automotive offers a wide selection of axle bearings to meet your application needs. They have bearings for the front and rear that will keep your axles spinning without resistance. Whether you need just a bearing or a complete bearing and seal kit, Crown Automotive has the quality choices to get your project revolving.
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$57.99
$52.19
On Sale
Yukon Gear and Axle offers an extensive line of general replacement and high performance axles for passenger car, truck and SUV applications. Yukon Gear & Axle 4340 chromoly axles provide up to 50 percent more strength than stock axles … critical for extreme performance applications with large tires, high torque and high horsepower. These 4340 axles are manufactured using the latest technologies and the highest quality materials for long life in off-road, street and track use. Yukon Gear & Axle 4340 chromoly axles are offered in complete kits or individually.
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$156.99
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$1,695.99
$133.44
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$1,441.59
On Sale
USA Standard Gear master overhaul kits have everything you need to properly rebuild the differential in your vehicle. They let you finish your ring and pinion gear installation or axle rebuild with confidence. These install kits offer a lower price alternative when costs must be kept down. Most USA Standard Gear master overhaul kits include: * Pinion bearings and races * Pinion shims * Carrier bearings and races * Carrier shims * Crush sleeve (if applicable) * Slingers (where used) * Pinion seal and nut * Ring gear bolts * Cover gasket or gasket maker (RTV) * Marking compound with brush * Thread locker
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$163.99
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$515.99
$139.39
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$438.59
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