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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
Silver Sport EasyFit transmission kits are designed to be the perfect start to your TREMEC TKX installation. The kits are tailored with a vehicle-specific shifter position and components to make your installation easy and less costly. Features and specs: * STX Shifter--short throw shifter (depending on kit) * Transmission mount, reverse light harness, pilot bushing, and required hardware * 5-speed pattern shifter ball or 5-speed shift pattern console plate (depending on kit) * EDP coated, steel crossmember (depending on kit) * Gear ratios--2.87, 1.89, 1.28, 1.00, 0.68, 2.56R * 600 lb.-ft. torque rating * 26-spline count input shaft * Quality-tested with a 12-month factory warranty
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$4,295.00
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$4,395.00
Currie crate axles deliver unrivaled strength, along with trail-tested, field-proven design. Their Currie 44 axles are complete pre-configured packages, for both front and rear applications, with direct bolt-in simplicity designed for heavy off-road use with up to 37 in. tall tires. They feature reinforced nodular iron center sections, heavy-duty 3 in. axle tubes, and heavy forged knuckles (front only), that prepare your rig for adventure. And their use retains the stock axle width, as well as the factory 5 x 5 in. wheel lug pattern, so you can keep those great new wheels you already purchased. Upgrade strength, reliability, and functionality without busting your budget; replace your stock axles with Currie 44 crate axles.
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$5,850.00
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$6,100.00
Need traction? Zip! You've got it with Yukon Gear & Axle Zip lockers! With on-demand traction, these lockers offer an air-operated design that allows you to switch from an open differential to 100 percent lockup when you need it. Theses Yukon Zip lockers are the ultimate in driver selectability for the right traction, on-road and off. Built from forged cases with 4320 chromoly internals for added strength, they work with a variety of air-delivery systems and are assembled in the USA. Do you need gripping power--now? You have the control with Yukon Gear & Axle Zip lockers.
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$1,539.99
Trail-Gear assembled third members are off-road strong! These units are built with all-new housings and internal parts and are delivered ready for you to drop into your axle. TG assembled third members feature top-quality ring and pinion gears, lockers, solid pinion spacers for long gear life, and they include triple-drilled flanges to cover common driveshaft patterns. The V6 units feature larger OEM-style V6 gear sets with longer pinion gear. Choose your locker style, case style, and gear ratio for off-road performance from Trail-Gear's selection of assembled third members.
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$2,461.85
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$2,644.43
Trail-Gear assembled Super Finish third members are made from tool-grade 8620 steel and heat-treated for maximum strength and wear resistance. They include all new parts and are ready to drop into your axle with top-quality Super Finish 29-spline ring and pinion gears, and your choice of locker. The ring and pinion gears are treated with the REM Isotropic Super Finishing (ISF) process, which removes the microscopic peaks in the material and creates a surface on the ring and pinion gears with a roughness of less than 10 µin Ra. This means that there is less friction between the gears, reducing wear by 95 percent, and allowing the gears and bearings to run cooler and last longer. Select the ideal kit for your application. Additional features and benefits: * Fully built Super Finish 3rd members--all new parts--no used housings or internal components * 29-spline pinion spline is 7 percent larger in diameter than the 27-spline for increased strength * Available in 4.88 and 5.29 ratios for 4-cylinder, V6, and high-pinion applications * Gear teeth are cut using Gleason CNC hobbing machines and cutters * No break-in period * Non-directional surface that increases lubricant retention on the gear surface, reducing lubrication requirements * Dust shield pre-installed onto flange * High-pinion sets also include a high-pinion oil slinger * V6 units feature larger OEM-style V6 gear sets with a longer pinion gear * Trail-Safe pinon seal and nut included * Flange is quadruple drilled with popular Pickup/4Runner and Tacoma patterns: -- 66mm x 66mm x 11mm (Tacoma) -- 60mm x 60mm x 10mm (Pickup/4Runner and TG heavy-duty driveline) -- 60mm x 68.3mm x 10mm -- 61.5mm x 70mm x 10mm Notes: * Requires ring and pinion setup kit to complete the installation into your existing differential housing * For Toyota 8 in. solid axles only. Will not fit 7.5 in. IFS front axles.
Not Yet Reviewed
$2,577.77
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$2,987.69
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
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$5,229.99
Currie crate axles deliver unrivaled strength, along with trail-tested, field-proven design. Their Currie 60 axles are complete pre-configured packages, for both front and rear applications, with direct bolt-in simplicity designed for severe off-road use, V8 horsepower, and up to 37 in. tall tires. They feature the Currie exclusive high pinion nodular iron radius bottom center section for improved obstacle slide over, heavy-duty 3 in. tubes, and the industry's strongest standard axle--full 35-spline inner/outer front and 40-spline semi-floating rear axles--making the Currie 60 axles the clear choice for serious off-road users. They increase axle width to 68.75 in. between wheel mounting surfaces for improved clearance with large tires. The front axle features 5 x 5 1/2 in. wheel lug pattern, while the rear is dual-drilled with both 5 x 5 in. (to match stock front axles) and 5 x 5 1/2 in. Upgrade strength, reliability, and functionality; replace your stock axles with Currie 60 crate axles.
Not Yet Reviewed
$6,050.00
TeraFlex CRD60 HD semi-float axle assemblies are perfect for replacing bent, broken, or damaged axles in Jeep vehicles including Rubicon models. They can also be used as a direct bolt-on upgrade for Jeep owners looking to beef up the stock axle's weak areas. These rear axle assemblies feature TeraFlex's exclusive Constant Radius Design (CRD) that provides high ground clearance and is unaffected by pinion angle adjustments. They are compatible with all Super 60 gear ratios for extreme-duty applications requiring additional ring and pinion strength, and the heavy-duty axle housings feature smooth profile surfaces, axle tubes, all necessary mount brackets, control arm bushings, and more! A variety of kits are available to cover several Jeep applications. A complete Tera CRD60 HD rear axle assembly with semi-float includes an ARB air locker, a choice of pre-installed Spicer Super 60 ring and pinion gears, as well as Spicer Super 60 bearings, semi-float rear axle shafts, and sensors. Kits are also offered without ring and pinion gears, locker, and carrier. Choose a kit created for your Jeep model. Features: * Factory-style semi-float axle design * 3.25 in. O.D. x 0.375 in. wall DOM axle tube for superior strength verses weight * Fixed spindle mount hub assembly * Tera CRD60 specific high-pinion rear axle housing design * Includes Spicer 1350 Series pinion yoke * Heavy-duty bearing caps increase rigidity and reduce ring and pinion distortion * Built-in "skimmer" cuts ring gear oil halo and forces it into the pinion bearings * Outer pinion bearing pocket features a renewable oil reservoir that sends cool oil to the pinion bearing * Oversized outer pinion bearing handles increased torque and high-load conditions * High-capacity housing holds maximum amount of oil * Pre-installed inner axle seals * Ductile cast iron housing with increased rib gussets * Heavy-duty ductile iron differential cover with increased cover mounting area * Integrated lower control arm skid plates * High-flow oil passages * Reinforced rear track bar mount with multiple mounting locations * UV protected triple-stage powder coat for corrosion resistance * 1/4 in. thick CNC laser-cut axle brackets for extreme strength * Pre-installed upper control arm bushings * Proper pinion angle for lifted applications * Pre-tapped hole on spring perch for bump stop extensions * Retains all ESP, ABS, and speedometer sensor capability
Not Yet Reviewed
$4,271.99
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$6,465.99
Spicer Drivetrain Ultimate Dana 60 crate axle assemblies upgrade your axles for even better performance over rocks, across sand, and through mud. They incorporate many innovations to deliver optimal performance for your Jeep right from the start. Stronger axle shafts, higher torque loads, and rock-solid seals for peak protection, give you the Dana advantage to tackle the extreme punishment of off-roading. Spicer Dana 60 advantages: * Spicer 35 spline SAE-4340 nickel chromoly steel axle shafts * High-strength, heavy-gauge brackets * Available with either an Eaton ELocker or ARB AirLocker * Heavy-duty 8 x 6.5 in. wheel bolt pattern * Nodular iron diff cover with protective ribbing * Spicer 1350 strap-style/half-round end yoke * Upgraded heavy-duty brakes with plug-and-play ABS system Front axle assemblies: * Massive Spicer SPL-70 U-joints—exclusive to Dana * Warn 35-spline hub locks * Spicer 10 in. ring and pinion gear inside * Axle tubes: 3.5 in. tube diameter/.370 in. wall thickness Rear axle assemblies: * Spicer 9.75 in. ring and pinion gear inside * Axle tubes: 3.5 in. tube diameter/.390 in. wall thickness
Not Yet Reviewed
$8,799.99
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$9,979.99
TeraFlex Tera30 HD front axle housings are heavy-duty with axle tubes, bracketry, and forged inner knuckles, as well as pre-installed inner seals and upper control arm bushings. They are available with or without an ARB air locker, pre-installed ring and pinion gears, and TeraFlex HD ball joints. With the bare HD axle housings, simply transfer your existing internal and outer components to the new housing! Select a kit designed for your Jeep. TeraFlex Tera30 HD front axle: * 3.25 in. O.D. x 0.25 in. wall axle tube increases torsional strength to resist bending * Asymmetric housing design for extra-long tube side strength * Pre-installed inner axle seals * HD forged inner knuckles with greater upper and lower section strength * Ductile cast iron housing with increased rib gussets * HD ductile iron differential cover * Smooth radius bottom design to glide over rocks and obstacles * Integrated lower control arm skid plates * High-flow oil passages and bottom oil drain hole for simple fluid changes * UV protected triple-stage powdercoat for corrosion resistance * 1/4 in. thick CNC laser-cut axle brackets for extreme strength * Integrated factory location upper control arm mount * Pre-installed upper control arm bushings * Proper pinion angle for lifted applications * Pre-tapped or drilled hole on spring perch for bump stop extensions * Retains all factory ESP, ABS, and speedometer sensor capability
Not Yet Reviewed
$2,883.99
TeraFlex Tera44 HD axle housings include front inner axle shafts and TeraFlex HD ball joints, with or without an ARB air locker and a choice of pre-installed ring and pinion gears. They are the perfect replacements for some Jeeps and the ideal upgrade for others. Transfer your existing outer components (stub shafts, unit bearings, knuckle assembly, brakes, sensors) to the new housing to beef up your Jeep with TearFlex Tera44 HD front axle assemblies. Features: * 3.25 in. x 0.5 in. axle tube * UV-protected triple-stage powdercoat for corrosion resistance * 1/4 in. thick CNC laser-cut axle brackets for extreme strength * HD forged inner knuckles * 5 x 5 in. wheel bolt pattern * Eliminates center axle disconnect * 1-Year/Unlimited Mileage Warranty
Not Yet Reviewed
$3,599.99
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$5,429.99
More beef? You bet! Artec Industries adds even more muscle to your super-tough Dana 80 rear axle with their super-tough trusses. Precision CNC-cut and bent, these form-fitting trusses are built with 3/8 in. thick mild steel truss tops and 1/4 in. mild steel ram mounts and gussets to deliver maximum strength. You fly through the air, you land, the ground pushes up, and your truck pushes down---something has to give ... well, it won't be your Dana 80 axles reinforced with trusses from Artec Industries!
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$419.99
On Sale
TCI StreetFighter transmissions are durable enough to withstand the rigors of even the toughest street machines. Equipped with a manual/automatic valve body, most units allow you to manually shift the vehicle into each gear change or, by placing it in the drive position, remain fully automatic. In either mode, you get a race track shift that bangs through the gears and shaves time off of your ETs. When you use the manual gear selection feature, the StreetFighters upshift and downshift right when you move the lever, with no lag or governor override. When you select the normal drive position, they retain positive automatic shifts for the ease of driving you look for in an automatic transmission.
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$3,124.95
$2,191.95
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$3,489.95
On Sale
TCI Super StreetFighter transmissions bridge the gap between the StreetFighters and full Competition series transmissions. Like the StreetFighter units, these are equipped with 100 percent tested, manual/automatic valve bodies. That means that most units allow you to manually shift the vehicle into each gear change or, by placing it in the drive position, remain fully automatic. In either mode, you get a racetrack shift that bangs through the gears and shaves time off your ETs. When you use the manual gear selection feature, the Super StreetFighters upshift and downshift right when you move the lever, with no lag or governor override. When you select the normal drive position, the transmissions retain positive automatic shifts, for the ease of driving you look for in an automatic transmission.
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$2,250.95
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$3,478.95
$1,950.95
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$2,978.95
Yukon Gear & Axle ring and pinion and differential combos save time and money by including everything you need in one simple part number. Pro Kits feature a premium Yukon ring and pinion gear set, Yukon Master install kit with high-quality Timken bearings, and required small parts to get vehicles back on the road quickly. The gear and install kits include axle bearings and seals. Many of these combo kits include Dura Grip differentials, depending on application. Order the Yukon Gear & Axle ring and pinion gear and differential combo designed to fit your application.
( 4 )
$1,551.99
On Sale
TCI Competition transmissions are designed to take the abuse of drag-racing competition. They're available with full-manual and trans-brake setups and retain no automatic shift features. They feature special heat-treated races and sprags, high-performance clutches and bands, and improved lubrication. TCI blueprints and modifies these transmissions for maximum performance, then dyno tests and pressure tests them. So you can concentrate on winning the race!
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$3,113.95
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$3,830.95
$2,613.95
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$3,330.95
Yukon Gear & Axle muscle car limited slip and re-gear kits dramatically improve traction and durability by adding a Yukon LSD and an upgraded ring and pinion set to your differential. They also provide an opportunity to generate next-level acceleration by moving to a more aggressive gear ratio. Each kit will include posi-traction unit, ring and pinion gear set, and all required bearings and installation hardware. Select the kit designed for your muscle car.
Not Yet Reviewed
$1,489.99
Direct-fit Currie 9 in. rear-end axle housing assemblies have OE mounting points designed specifically for your application. This means that you won't have to spend hours cutting and welding in order to install them. These assemblies are available with disc or drum brakes, axles, bearings, and seals--everything you need to upgrade your rear-end, courtesy of Currie Enterprises.
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$1,550.00
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$1,750.00
McLeod Street Twin clutch kits are designed to be high performance replacements for your OEM clutch. They include everything you need--a new disc, pressure plate, and your choice of a billet steel or billet aluminum flywheel. McLeod Street Twin clutch kits are pre-balanced to fit specific applications and include the correct alignment tool for installation.
( 4 )
$1,399.00
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$1,599.00
American Powertrain ProFit Tremec TKX manual transmissions and installation kits put the power to the pavement with unmatched durability and versatility. Tremec has normally sourced their aftermarket transmissions from the OE side, such as the Magnum T-56 and the T-5, but this new design is made from the ground up as a strictly aftermarket transmission. Designed to fit classic muscle cars and customs, the TKX has a tighter, more streamlined case, and features 600 lbs.-ft. of torque capacity and are capable of engines speeds of 8,000 rpm with shifts at 7,500 rpm. The compact design provides clearance in most transmission tunnels without floor modifications, while case strength has increased from previous models with the new 3-piece aluminum housing and gaskets at all flanges simplifies installation and eliminates fluid leaks. Additional features include: * Designed with your specific vehicle application in mind * Available with multiple gear ratio configurations for compatibility for multiple applications with three shifter locations * Multi-cone synchronizers and synchronizer rings are made of sintered bronze and carbon for superior shifts * All gears are supported by caged needle bearings to reduce end play * Gears and shafts are made from ASTM 4615 grade steel and provide increased torque carrying capacity * TKX manual transmissions have 31-spline output shafts for added strength, built-in reverse light switches, and cruise control safety switches * The TKX also has separate GM and Ford case patterns and input configurations—with integrated GM and Ford transmission mount patterns * Installation kits include a driveshaft slip yoke made from cryogenically hardened steel, a polyurethane transmission mount, a steel roller pilot bearing, and a reverse light wiring harness
( 1 )
$4,395.00
RAM Force 10.5 dual disc clutch kits have a strap-driven floater plate and are precision-balanced for quiet operation. The sprung hub top disc absorbs shock and reduces driveline noise. Force clutches are available with your choice of a 300 Series friction disc or a 900 Series disc. The 300 Series organic disc models are capable of handling 500 to 800 hp; while the 900 Series metallic models can handle between 600 and 1,200 hp. These kits use a marcel spring—a thin, wavy device that helps to eliminate the go-or-no-go tendency that similar dual disc clutches have. RAM Force 10.5 dual disc clutch kits include a billet aluminum, SFI-certified flywheel with a steel insert that has sufficient mass to draw heat away from the clutch without distortion. Some kits are available with a steel flywheel. Order the model recommended for your vehicle and engine application.
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$1,425.00
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$1,685.00
Currie 9 in. crate rear end assemblies offer a direct-fit, bolt-in solution for most common car, truck, and Jeep platforms. They feature larger spline axles, heavy-duty components, and internals from leading manufacturers. These axle assemblies are built to exacting standards matching factory specifications for suspension mounting points, pinion location, overall axle width, and wheel bolt pattern for hassle-free installation. Prior to shipping, skilled craftsman meticulously assemble essential parts to deliver years of trouble-free operation for your vehicle. They offer a broad range of gear ratios, performance differentials, or even a spool—if that's your thing. You'll be ready in no time for cruising, racing, off-roading, or just daily driving with Currie 9 in. crate rear end assemblies. Order the kit designed to fit your specific model.
( 4 )
$4,000.00
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$5,300.00
TCI Circlematic automatic transmissions are great for oval track use. However, despite the sound of their name, they also can be used for performance marine applications. All transmissions feature high performance clutches, a steel clutch hub, and a modified planetary gear set that will work with the latest rear suspensions. Many specialty combinations are available.
Not Yet Reviewed
$2,250.95
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