Availability
Sierra Marine offers kits to help you rebuild your gear box. Each kit contains the gears you need to get your boat back on the water. Order the model recommended for your watercraft engine application.
Not Yet Reviewed
$650.99
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$663.99
Sierra Marine forward gear sets replace old worn gears with renewed performance. Offering an OE fit and function, they include forward and pinion gears. Service your boat with Sierra forward gear sets.
Not Yet Reviewed
$687.99
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$867.99
Trail-Gear unit hubs are not just another aftermarket 1-ton unit hub that's been machined down and modified from an 8-lug to a 6-lug application. No, Trail-Gear designed these units for a specific application, so the hubs will bolt right onto Dana 60 or 9 in. housings that are set up for unit hubs. They're made to accommodate a 30- or a 35-spline axle shaft and use a 1/2 in.-20 threaded wheel stud with a 6 x 5.5 in. wheel bolt pattern. These are the same unit hubs that you will see on most competition buggies. They are ultra-strong and easy to replace. Simply unbolt the old one and bolt on the new replacement hub. This is a much simpler and stronger unit then the stock spindles being replaced. All unit hubs include integrated roll pin to prevent the spindle nut from coming loose.
( 1 )
$549.99
Clearance
Evolution Driveline transfer cases are remanufactured to meet or exceed OEM specifications to provide superior quality with perfect fit and function. Each transfer case passes a comprehensive battery of tests in Evolution Driveline's test center before being packaged and shipped. To enable you to buy with confidence, their computerized test center recreates actual driving conditions to analyze the performance of each transfer case. Evolution Driveline is the first manufacturer to offer hybrid problem-solving transfer cases that marry aftermarket solutions to OE-quality remanufactured products. Additional features: * Problem-solving applications include Jeep transfer cases with slip yoke eliminator kits and GM cases with oil pump wear-savers installed * Backlash, mesh load, leak, and rotational torque quality-control testing is performed on every unit * OEM cores are processed as individual units throughout the teardown and assembly process * Cores are cleaned using UMC ReTech's hydro-blast cleaning and rinse process * All case halves are wet sanded to ensure perfect mating surfaces * Loctite gasket eliminator and primer is used to seal all aluminum mating surfaces * Remanufactured in a ISO9001:2008 USA facility * 12 month/12,000 mile limited warranty
( 1 )
$934.99
$699.50
These TCI paddle shifters are designed to work with any automatic 4 or 5-speed transmissions controlled by the revolutionary TCI transmission control unit. These shifters feature distinctive show-car styling and shifting performance that's perfect for track days or highway cruising. TCI paddle shifters communicate to the transmission control units through a wireless CAN signal with no worries about signal interference or disruption. The steering wheel mounted units operate by slim, 1/2 in. thick paddle shifters that instantly instruct the transmission as to your gear of choice without hesitation. These shifters fit all 5 and 6-bolt aftermarket steering wheels and come complete with server spacers of varying widths, allowing you to adjust the steering wheel location for your personal preference. Power for the TCI paddle shifter systems comes from the horn button relay rather than from batteries that must be replaced frequently. Additional features include: * Fit all 5 and 6-bolt aftermarket steering wheels and provide consistent, repeatable shifting for g-machines and touring cars * Work with any automatic 4 or 5-speed transmission controlled by the revolutionary TCI transmission control unit * Utilize CAN signal for gear selection without interference or hesitation; includes easy-to-read digital gear display powered by car horn connections * Easy-to-install, slim line, 1/2 in. thick paddles with stylish black anodized finish
( 2 )
$789.95
Quarter Master V-Drive clutches offer the best performance, durability, and value. Available with or without a button flywheel, these replacements feature an 8-leg open-cover design for strength and effective heat dissipation—perfect for Sportsman Circle Track, road course, and off-road racing. Quarter Master packs each clutch with premium internal friction material for reliable high-torque capacity, while the light weight of the clutch provides superior performance. Plus, the frictions and floaters are rebuildable. Dozens of models are available for countless year/make and engine applications. Get cleaner, cooler operation in the harshest race conditions with Quarter Master V-Drive clutches.
( 2 )
$628.12
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$797.55
Summit Bucks
Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. These replacement units are available for dozens of axle applications.
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$623.99
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$831.99
On Sale
The Holley Sniper Transmission Controller (STC) is designed for common GM and Ford electronic 4-speed automatic transmissions. Three part numbers cover a complete range of applications—all Sniper EFI systems, Sniper 2 EFI-specific (M8 CAN connection), or a full standalone unit. The Sniper specific applications connect to your Sniper EFI system via CAN bus and are programmed through the existing Sniper 3.5 in. touch screen. No programming is available with PC computer software; however, the transmission functions can be data-logged and reviewed with Sniper PC software. The Standalone version includes a dedicated 3.5 in. touch screen and is primarily intended for carbureted engine combinations. GM and Ford 4-speed electronic overdrive transmissions are simple in operation. They have four speeds, with the top gear being an overdrive; and all have a lockup torque converter that eliminates any slippage when the lockup is applied. With a stock torque converter, the lockup should only be applied under light throttle conditions or excessive wear will occur. Upshifts, downshifts, and torque converter lockup are based on vehicle speed and throttle position (or optionally the MAP sensor) and are adjustable with the 3.5 in. touch screen. P/N 551-100: Replacement controller unit only P/N 551-101: Controller unit and power harness only P/N 551-102: Standalone kit for carbureted applications (includes power harness and hand-held programmer) P/N 551-103: Controller unit and power harness for use with Sniper 2 EFI systems Holley Sniper Transmission Controller features: * Adds electronic transmission control functionality to a Sniper 2 * Controls conventional electronic 4-speed transmission applications. GM 4L60/70/80E and Ford AODE and 4R70W - transmission specific harnesses sold separately: -- 558-405 – GM 4L60/70/80E -- 558-455 – 2009+ GM 4L60E -- 558-470 – 1998+ Ford 4R70W/4R75W -- 558-471 – 1992-1997 Ford AODE/4R70W * Tuning is performed through the 3.5 in. touch screen LCD (included with the Standalone version). Future compatibility will include 5 in. display and Bluetooth module * Tune upshifts, downshifts and WOT shift points * Full programmability of torque converter lockup * Full tuning of transmission line pressure (shift firmness) * Controls and layouts interface mirror Dominator and Terminator X MAX ECUs (except no paddle shift) * A MAP sensor is needed if using MAP for line pressure, which is usually only done with forced induction applications
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$599.95
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$728.95
$538.95
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$655.95
On Sale
These B&M Stealth Pro Ratchet shifters' contemporary style and myriad features speak volumes to their functionality. They are the leading choice for 3 and 4-speed transmissions. Easy to operate and install, they come supplied with a 5 ft. super-duty race cable. The B&M Stealth Pro Ratchet shifters also feature: * Lightweight, stealthy black anodized aluminum cover and grip * Single hand-operated reverse lockout feature meets NHRA and IHRA requirements * Stick always returns to center position after shift * Easiest unit to double shift with an air, CO2, or electric shift mechanism * Short throw ratchet action reduces shift time * Supplied with a lightweight brushed aluminum cover * Precision ratchet action works with either standard or reverse pattern valve bodies * Includes neutral safety switch, backup light switch, gear position indicator, and both forward and reverse pattern indicator decals
( 40 )
$599.95
$538.95
On Sale
B&M Racing introduces the Precision SportShifter for 2007-18 Jeep Wrangler JK models equipped with the NSG370 6-speed manual transmission. The unit features a CNC billet aluminum case with an electric blue anodized finish which houses internal components made from super tough 4140 chromoly. The shift throw has been reduced by 35 percent over the factory shifter along with the detent pressure which has been significantly increased creating a noticeably stiffer shift feel. This was done to address problems with the softness of the factory shifter detent springs which easily pop out of gear while off-roading. The shifter uses the factory shift stick and knob.
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$749.95
$673.95
On Sale
Yukon Gear & Axle Dura Grip positraction carriers offer great traction and strength, and yet are not overly aggressive for the streets. These nodular iron or steel replacements are 4-spring, Raybestos composite, clutch-style, limited-slip carriers—with internal gears machined from forged 4320 steel with stronger teeth. Assembled in the USA, the Yukon differential carriers are rebuildable, allowing for repairs or modifications without buying a new unit. They're available for fitment with nearly two dozen axle models. What are you using to transfer power? Choose smooth operation with strong lockup abilities to transfer torque—benchmarks of the Yukon Gear & Axle Dura Grip positraction carriers.
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$908.99
$511.69
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$772.64
For the spirited driver, a Barton Dodge Challenger shifter is a must-have. They're beefier, more solid units—from the throw-rod, all the way to where the shift knob or pistol grip starts. With their 44 percent throw reduction, you experience positive, notchy shifting, preventing missed gears or gear engagement. Full isolation of the handle from the shifter makes them quieter; and self-centering springs aid the yoke and linkage back into alignment with the selector rod. Barton has these shifters available in the full system with a variety of finishes/colors and knob or grip choices, as well as the shifter only for use with the OEM handle and knob.
( 126 )
$565.00
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$685.00
FTI Performance ESR Series torque converters are designed for mildly modified vehicles. They're built using Torrington bearings, race-prepped sprague hardened impeller hub, hardened turbine hub and splines, a new steel pilot, and laser-cut mounting ring. These units are available in a variety of sizes, advertised flash stall ratings, and numerous other options. Order the torque converter recommended for your transmission application.
( 64 )
$649.00
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$799.00
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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$524.95
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$692.95
Lokar electronic sport shifters allow you to take control of your automatic transmission whenever you desire. Just shift your lever from drive into sport mode and begin bumping through the gears. Lokar has maintained all of the safety features from their traditional units, and these sport-mode shifters are available for several applications in different shifter lever lengths and knob styles. Retain classic looks, while adding new technology with Lokar electronic sport shifters. Features include: * Positive lock-out in Park and Neutral * Neutral safety switch * Floor mount design, cable operated * Standard automatic with integrated "Sport Shift" mode * Works will all current Lokar knobs and adapters * Several lever lengths in straight or bend-styles available * Works with most aftermarket controllers * Cable-integrated bracket
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$795.95
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$904.95
Summit Bucks
Sonnax heavy-duty automatic transmission output shafts allow energy to be absorbed via their torsional design, reducing peak power loads to critical areas. This, in turn, prevents shaft failure common in certain GM units. These steel output shafts are precision engineered and manufactured for unbeatable performance in high-horsepower street and strip builds. They're available in various lengths, and feature many unique refinements available only from Sonnax.
( 2 )
$710.03
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$774.01
Don't leave anything on the table at your next race! Step up to a Summit Racing™ billet aluminum trans-brake valve body—and take full advantage of your race car's ability. These automatic transmission units are lighter than OEM steel versions; and their solid design is more rigid than veined factory models, improving strength. Summit™ valve bodies also omit the unnecessary fluid channels found in OE-style units, providing a more direct fluid path. This improves trans-brake performance and shift quality. Increase your transmission performance with the billet aluminum trans-brake valve body recommended for your application. Other benefits: * Achieve maximum torque converter stall * Quicker and more consistent reaction times and 60 ft. times * Prevents engine torque load from transmitting thru drivetrain prior to launch * Trans-brakes perform in much the same way as a manual clutch
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$535.99
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$544.99
Summit Bucks
Have to replace the differential carrier on your vehicle? ACDelco differential carriers are genuine OEM replacements with the fit of original equipment. Made with top-notch OEM-quality, these units are built to not only last, but keep your vehicle operating safely.
( 2 )
$580.99
Summit Bucks
Sonnax heavy-duty remanufactured valve bodies are built to overcome chronic shift and converter clutch apply complaints. It provides firmer shifts and a moderately increased pressure curve to improve performance, especially in truck and towing applications. Numerous Sonnax valve upgrades are included to restore hydraulic clearances that lead to shift complaints, clutch distress, converter complaints and codes, solenoid issues and pressure problems. Line pressure rise has been moderately increased to overcome shift complaints, delayed engagements, and to increase holding power to the clutches. To guarantee the highest level of operational performance, this remanufactured valve body is tested on state-of-the art equipment to verify that solenoid feed, clutch, converter, and line pressures match or exceed OE specifications. Choose your preferred kit packaged for your transmission. The valve body includes the following: * Oversized TCC regulator valve and sleeve, and limit valve spring for firmer TCC application * O-ringed bore plugs and abuse plugs * New accumulator control valve and sleeve with spring * Oversized AFL line up * New forward accumulator piston and seal * New pressure switch manifold * New EPC solenoid * New TCC PWM solenoid Kit contents: * Remanufactured valve body * Separator plate * Upper case gasket plate * Lower valve body gasket plate * 1-2, 3-4 accumulator springs * EPC solenoid harness adapter for 2003 to later units * Sonnax line pressure booster kit
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$563.04
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$582.46
FTI Performance MR Series torque converters are specifically designed for mud boggers needing an incredibly strong spragless unit without draining the bank. They're ideal for 400 to 1,200 hp weekend runners—and still perform well during occasional races. Features include a forged billet steel front cover, a billet spragless center, a hardened flanged impellor hub, and a steel anti-ballooning plate. Triple Torrington bearings, computer balancing, and furnace-brazed and heli-welded fins add to the list of reliable bulletproof MR Series parts. These converters provide excellent torque multiplication, better heat-dissipating oil flow, and impressive performance. Order the parameters desired and the model recommended for your transmission application.
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$799.00
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$849.00
Whether starting a new project or replacing an old part, you'll find what's needed with Spicer Drivetrain Products differential carrier cases. Spicer supplies carriers to many OE manufacturers, so the replacement units are every bit as tough as the originals. They'll accept all factory and most aftermarket internal parts, allowing for modifications. Going mild or wild … Spicer Drivetrain differential carrier cases are the place to start. Order the model recommended for your vehicle and axle application.
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$554.99
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$774.99
If you use your ride as both a daily driver and weekend racer, you'll want the strength and reliability of FTI Performance SR Series torque converters. They're engineered entirely in-house at FTI and built to handle above-average power. These units feature TIG-welded furnace-brazed fins, a heavy-duty race sprag, and a hardened steel impellor. SR Series non-lockup converters include Triple Torrington bearings and a billet front cover for extra toughness. Each completed torque converter is pressure-checked and computer-balanced to ensure quality. Order the parameters desired and the model recommended for your transmission application.
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$769.00
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$819.00
On Sale
Lakewood bellhousings are an excellent choice for street rods, street machines or oval track applications where the use of an SFI-approved bellhousing is not required. These units are made from 0.250 in. thick hydro-formed steel or lightweight cast aluminum. They're designed for use with hydraulic and mechanical fork throwout bearings--and utilize factory bolt patterns for easy installation. Order the model recommended for your transmission make and model.
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$1,349.95
$515.95
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$749.95
ACT Sport clutch kits optimize the road to high performance by meshing solid products, outstanding quality, and exceptional value. They're crafted from CNC-machined parts and computer-balanced with no loose pieces to wear out or rattle for quiet, trouble-free operation. These Sport clutch kits with street discs are based on solid engineering principles, affording a clamp load increase of 20 to 40 percent with moderate pedal feel, and many of these new, not rebuilt units are SFI-certified to ensure safety. Get the power of your engine in motion with the smooth, precise feel and longer life of the ACT Sport clutch kits.
( 8 )
$508.00
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$634.00
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