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The Jeep NP231 is one of the most popular transfer cases, but it creates an extremely short rear driveshaft. These fixed yoke kits from Advance Adapters add 3 to 4 in. to the rear driveline length on a YJ, and up to 6 in. on a TJ. This results in a better driveshaft angle, eliminated driveline vibrations, and a transfer case that's ideal for trail use.
( 62 )
$258.76
TransGo automatic transmission reprogramming kits are designed with performance in mind. Most, but not all models contain additional features like Gear Command that allows you to hold manual low to any speed, and shift back to low at any speed. They are great for strip cars or 4x4 rock crawlers needing to select low and not have it upshift. Most TransGo automatic transmission reprogramming kits can be tuned for HD (Heavy Duty) use by following the recommendations in the kits.
( 39 )
$295.71
On Sale
Centerforce II clutch kits provide up to a 60 percent increase in holding capacity over stock systems. Their clutch-and-disc sets are recommended for mildly modified vehicles used for street and strip type applications. These units are also very capable for 4WD and off-road use, heavy-duty towing, and commercial applications.
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$461.95
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$556.95
$415.76
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$501.26
Clutches are subjected to continuous wear and tear. LuK clutch kits are made with premium quality components, engineered and manufactured to be problem-free. These kits are functionally tested to meet OEM performance specifications and provide an innovative and quality engineered clutch kit. As an original equipment supplier, LuK develops the performance specifications for individual vehicle applications.
( 381 )
$255.99
On Sale
B&M automatic transmission deep pans provide additional fluid capacity and cooling ability. No modifications to the dipstick are needed. They include a drain plug for clean and easy fluid changes, and are available in chrome or cast aluminum. Filter extensions are included for those applications that require the filter to be moved closer to the bottom of the pan.
( 372 )
$479.95
Clearance
VEGE has honed its remanufactured torque converter operation to optimize a steady outflow of a variety of products by using and adopting standard operating procedures to supply automotive, high-performance, heavy-duty, and industrial converters. VEGE torque converters incorporate the necessary upgrades to reduce failures. Areas that are known to fail such as pump and turbine blades are reset and re-enforced. The stators are completely disassembled and reloaded with new rollers and springs. Turbine hubs that have a high failure rate are replaced with billet steel hubs. Needle bearings are replaced with new ones and in most cases upgraded to heavy duty standards. VEGE torque converters are super balanced twice! Using state of the art Hines balancers all VEGE torque converters are checked for balance during the set up and tack and after final weld. This makes for a better dynamic running torque converter.
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$258.99
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$278.99
On Sale
Centerforce billet steel flywheels are available for popular import and domestic vehicles, including trucks. They're CAD/CAM-designed and CNC-machined from billet steel for precise, no-hassle, bolt-in installations. No modifications are required in combination with either Centerforce clutches or other clutch assemblies built to OEM specs. These rugged flywheels are SFI-approved, so you know that you can count on them--on the street and on the track.
( 61 )
$419.95
$377.96
On Sale
Are you getting ready for a manual transmission rebuild? Start with one of these comprehensive service kits from Crown Automotive. They supply the bearings, seals, gaskets, rings, and small parts (contents will depend on the application chosen) needed to successfully overhaul your transmission. Preventative maintenance is worth the time spent—and helps to provide reliable long-term performance. Choose the quality of Crown Automotive manual transmission master overhaul kits to get the most from your work.
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$406.99
$366.29
On Sale
ACT heavy-duty clutch kits offer a clamp load increase of 20 to 50 percent over OEM, significantly increasing torque capacity. The pedal feel with these clutches varies from stock to a moderate increase. Available for street and race applications, many are SFI-certified to ensure safety.
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$498.00
$430.50
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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$282.99
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$340.99
$254.69
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$306.89
Manufacturer Rebate
Powertrax Lock-Right and performance lockers' straight-line performance is equal to a solid spool axle, yet they automatically unlock to allow for full differentiation in turns. They also reduce the excessive noise, tire wear, and drivetrain damage associated with other lockers. Powertrax lockers replace the spider gears in your differential carrier without affecting your ring and pinion settings. The whole job can be done in your driveway with common hand tools in a couple of hours. A carrier is not included.
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$318.99
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$517.99
What kind of hidden performance does your vehicle possess that's ready to be unleashed? Spicer Drivetrain Products differential carriers supply the power for you to find out! You can increase your off-road traction, maintain streetability, and get ready to rock and roll in your truck or Jeep with the selection of carriers offered by this legendary manufacturer. Spicer goes above and beyond so your rig can do the same! Order the model and options recommended for your vehicle.
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$391.99
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$532.99
Eaton Electronic ELocker stator and armature service kits include a stator, bearing race, thrust bearing and retaining ring. They work with your Eaton differential to produce smooth, quiet performance and great traction under loads. Order the replacement kit recommended for your vehicle and axle application.
( 3 )
$257.26
Motive Gear Ten Factory replacement axle shafts are available for direct fitment on nearly two dozen axle models and hundreds of vehicle applications. Built from quality materials and heat-treated for strength and durability, Ten Factory axle shafts are offered individually to swap out a broken or worn original—as well as in more complete kits, with multiple shafts, wheel studs, bearings, and seals (depending on your selection). The components feature strong forgings and alloys for quality axle shafts you can rely on. Choose the parts needed for your specific make and model.
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$295.49
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$359.99
On Sale
From the time your vehicle starts moving until it stops, the parts in the transfer case are in action and under stress. When time, use, and stresses overcome these parts, replace them with Crown Automotive transfer case components. These components are OE-quality and designed to directly replace the originals. Transfer cases are constantly on the go, and when put into 4WD, they are downright abused. Rebuild or refresh your vehicle's case as needed with Crown Automotive transfer case components.
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$413.99
$372.59
On Sale
Spicer Drivetrain Products front axle shafts feature an increased U-joint size that provides 25 percent higher yield strength than original U-joints. They offer unparalleled strength and longer life—the outer stub is re-engineered for added strength; improved snap ring retention reduces shock load failures; and material has been removed from the body and added to the yoke ears (to equalize deflection through the yoke and reduce bearing cap spinning). The axles are made from durable steel, with a micro-alloy improving their strength and a statistically controlled heat treatment ensuring proper hardness. Order the replacement model designed for your vehicle application.
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$254.99
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$478.99
These Standard Motor automatic transmission control solenoids are designed to replace faulty factory units to keep your transmission shifting smoothly. They meet or exceed OEM specifications and are available for a variety of applications.
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$270.99
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$468.99
On Sale
Centerforce dual friction clutches generate up to a 90 percent increase in holding capacity over stock systems. These clutch-and-disc sets are designed for engines producing high horsepower and big torque outputs. Perfect for 4WD vehicles, all Centerforce clutch systems provide smooth engagement and light pedal pressure without compromising high performance.
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$461.95
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$587.95
$415.76
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$529.16
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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$302.99
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$611.99
$257.54
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$520.19
On Sale
Centerforce I clutch kits are designed to be high-quality, entry-level performance clutches for those in need of a superior stock replacement. Using the patented Centerforce centrifugal weights (where applicable) and premium friction materials, these Stage 1 clutch systems are perfect for applications with stock engines or mild power increases from minor bolt-on modifications.
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$419.95
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$493.95
$377.96
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$444.56
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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$281.99
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$345.99
$253.79
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$311.39
Pacific Performance Engineering heavy-duty transmission pans do more than hold oil--they cool and protect! They have thick cast construction from high-grade aluminum alloy. Thanks to internal and/or external cooling fins and robust side ribs, PPE transmission pans are much stronger and they allow fluid to run much cooler. Lastly, they feature an insanely strong Neodymium magnet-equipped stainless steel drain plug that attracts and holds harmful metal particles floating in your oil. Really, your pan just holds the oil? It's time for a change--upgrade to cooler Pacific Performance Engineering heavy-duty transmission pans.
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$269.99
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$314.99
Motive Gear is the leading manufacturer of driveline products for just about any vehicle, whether it is a stock daily driver or a full-competition 4x4 or race car. They are proud to offer an unmatched selection of quality components engineered and manufactured for the vehicle and for the way it is driven. Motive Gear ring and pinion sets are engineered to meet or exceed OEM specifications at a price that won't break your budget. Their broad selection of ring and pinion ratios is available for just about every vehicle made from the 1940s through the present. All Motive Gear products meet strict quality standards through advanced manufacturing techniques and are backed by their strong warranty. Their in-house quality control lab utilizes state-of-the-art equipment to continuously check Motive Gear products for strength, tolerance, and hardness. Only after meeting stringent quality standards are Motive Gear products packaged and ready for delivery.
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$280.99
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$407.99
Designed for spirited and daily driving, the South Bend Clutch Stage 1 clutch kits make for a great OEM replacement when your factory clutch gives out. The pressure plate included in this clutch kit has an increased clamp load that promotes longer life, and the disc is dual dampened for smooth engagement and increased transmission life. The disc has also been designed with premium friction materials, which will ensure for rapid heat dissipation and will help to increase the life of the clutch. Select the Stage 1 HD clutch kit designed for OE replacement or your performance application.
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$374.49
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$436.84
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