Performance Transmission & Drivetrain at Summit Racing

4x4 Posi-Lok Positive Axle Engagement Systems

Replace your slow, unreliable vacuum or electric front axle engagement system with one of these 4x4 Posi-Lok cable activated systems. The Posi-Lok systems give you direct control of your front axle right from your cab, so they will engage every time. They have a short 1 in. throw to make shifting on the fly easy, and as an added bonus, a 2WD low-range to give you the rear-wheel torque of 4-LO, and the bind-free steering action of 2-HI.

4.57 out of 5 stars ( 338 )

$174.95

On Sale

RT Off-Road Mechanical Axle Engagement Systems

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.

3.67 out of 5 stars ( 6 )

$133.99

$120.59

4x4 Posi-Lok Perm-Lok Systems

4x4 Posi-Lok Perm-Lok systems permanently engage the central axle disconnect (CAD) system and couples both front axles. Once installed, the front axles will not pull until the transfer case is engaged. They are ideally suited for fleet operators, and emergency vehicles. Plus, installation is easy and can be completed in approximately 10 minutes.

4.3 out of 5 stars ( 20 )

$94.99

4x4 Posi-Lok Front Axle Engagement Replacement Parts

4x4 Posi-Lok gives you the advanced edge of your stock front vacuum or electric front axle engagement systems. They also have you covered when it comes to replacement parts. From cables to shift forks, couplers, gaskets, etc., keep your four-wheel drive engagement systems operating smoothly with genuine 4x4 Posi-Lok replacement parts.

4.69 out of 5 stars ( 16 )

$44.99

Alloy USA Axle Lock Kits

Alloy USA axle lock kits affords 4WD when you need it. Your OE vacuum disconnect systems are prone to failure. These permanent replacements allow you to manually engage the front axle from inside the cab. A simple pull of the cable ensures that you will have 4WD for as long as the transfer case is engaged. Always have a backup plan with Alloy USA axle lock kits.

3.82 out of 5 stars ( 28 )

$174.99

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$217.99

American Powertrain Hydramax Hydraulic Clutch Release Systems

Skip the clunky old mechanical linkage and install American Powertrain Hydramax hydraulic clutch release systems. They easily install in almost any rear-drive vehicle. The patent-pending adjustable master cylinder bracket allows you to mimic any original clutch rod angle, giving you a smooth, modern clutch feel without hacking up your firewall. The systems are designed to work with original and aftermarket pedals and are available for most vintage 4-speeds, along with TREMEC T5, TKO, Richmond, T56, and Magnum 6-speed transmissions. These systems come with the nickel plated firewall mount, volume-matched master cylinder, as well as a reservoir kit, lines, fittings, model-specific pedal mounting hardware, and model specific internal or external slave cylinder.

3.79 out of 5 stars ( 82 )

$499.50

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$1,195.95

RideTech 1959-64 Chevy Air Suspension Systems

RideTech 1959-64 Chevy air suspension systems are designed specifically for the Chevy "B" Body cars. These kits provide an ultra-low show stance while maintaining excellent ride quality and handling. Choose the air suspension system recommended for your year/model. Some kits may vary depending on your application. RideTech 1959-64 Chevy air suspension system features and notes: * Upper StrongArms (powdercoated black and fully assembled with ball joints, bushing, and cross shafts; ready for installation) * Lower StrongArms (powdercoated black and fully assembled with ball joints, bushing, and cross shafts; ready for installation) * Front HQ Series Shockwaves utilize an impact forged aluminum body and monotube design to deliver excellent ride quality and handling (also allows fine-tuning of the ride quality and handling) * Front and rear MuscleBars help reduce body roll and create room for wider tires. PosiLink end links provide immediate engagement between the chassis and control arms. * Rear StrongArms provide added strength to help get the power to the pavement * Rear CoolRide and HQ Series shocks simply bolt in place of the stock springs. Important note: Control system is not included. To complete your air suspension system, a RideTech compressor system is recommended. * RideTech kit 11060298 upper arm and panhard bar utilize R-joint technology to provide smooth operation and reduce roll bind; must be used with stock spindles. Some cars have two rear upper control arms and will need an additional StrongArm. (1959-64 GM B-Body includes Impala, Bel Air, Biscayne, Brookwood, El Camino, Kingswood, Nomad, and Parkwood)

Not Yet Reviewed

$4,820.00

Powertrax Grip Pro Traction Systems

Powertrax Grip Pro traction systems are the latest design in differential technology. They combine the smooth operation of a limited-slip differential, with the strength of a fully machined, forged steel case. Using 3x2 spiral gear engineering, the Powertrax Grip Pro delivers progressive and variable traction. Based on throttle input, you are in control of how much traction is applied. These differential systems are great for use where finesse is just as important as brutal traction. On the road or track, in the rain or snow, Grip Pro is a winner! The systems come fully assembled and there are no friction plates—so you can use any gear oil you like, including full synthetic and racing lube.

4.24 out of 5 stars ( 21 )

$546.52

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$1,245.99

Powertrax No-Slip Traction Systems

These Powertrax no-slip traction systems are the latest design in traction-adding differential technology. They combine the smooth operation of a limited-slip differential with the traction performance of a locking differential. A precise synchronization mechanism eliminates the ratcheting sounds typical of other locking differentials. Special gear and spring designs reduce the backlash and, therefore, the driveline windup. Only ultra-strength material that is 67 percent stronger than titanium is used. Installation is simple because no ring and pinion setup is required. In addition, no special tools or oils are needed. Step-by-step, model-specific instructions are provided with every kit.

4.06 out of 5 stars ( 81 )

$509.99

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$806.99

Hybrid Racing K-Swap Clutch Release Systems

Hybrid Racing K-Swap clutch release system upgrades help to eliminate grinds during hard shifts and improve the feel of gear changes. Factory clutch master cylinders in newer cars are known to be rather unreliable, and because of their poor design and quality, they can lead to premature failures of critical parts throughout the drivetrain. High rpm grinds are mostly attributed to the OE master cylinder's inability to transfer fluid effectively to the slave cylinder, thus causing grinding and rasping of the gears and synchro since the clutch disc hasn't fully disengaged. Upgrading the clutch master cylinder and clutch line to Hybrid Racing K-Swap clutch release systems changes the system to an older, more direct, and efficient system. This improvement allows the driver to feel a more consistent and direct clutch pedal which also improves shifting at high rpms. These kits are intended to replace all of the clutch release components which will give you the most direct and reliable clutch pedal feel. Features and kit contents: * Genuine Honda® parts--not reproductions * OEM Nissin EM1 clutch master cylinder * Stainless steel braided clutch line * Banjo fittings with washers * OEM NISSIN slave cylinder (non-dampened)

Not Yet Reviewed

$275.49

Bowler Performance Tru-Shift Throttle Correction Systems

Are you tired of the trial and error method of adjusting your TV cable on your 700-R4 and 200-4R transmission? Bowler Performance Tru-Shift throttle correction systems will solve your problems. These are the easiest and best functioning TV cable adjusting systems available, and they are easy to install. Simply bolt on the supplied bracket and carburetor cam assembly, install the Bowler TV cable, then run the accelerator to wide open throttle. The cable will automatically adjust itself and you're done. With Bowler Performance Tru-Shift systems there is no need to remove the carburetor, adjust cams, drop the transmission pan, or install a pressure gauge to check the pressures, but best of all—there isn't any more guessing. Bowler even includes different throttle cable brackets to cover Lokar, Gennie, GM square, and early round hole styles. Each one attaches neatly to the supplied bracket. Choose the kit designed for your carburetor.

4.75 out of 5 stars ( 4 )

$312.99

Eaton Preload System Service Kits

Eaton preload system service kits are designed to correctly set up your aftermarket differential. They include necessary spacers and hardware to adjust the preload on your differential. Order the preload system service kit recommended for your axle model.

4.88 out of 5 stars ( 26 )

$107.99

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$214.99

LuK Clutch Hydraulic Clutch Release Systems

LuK Clutch hydraulic clutch release systems are pre-filled OE-quality replacements for your vehicle. These clutch master and slave cylinder assemblies feature durable construction for lasting performance and smooth shifting. Maintain hydraulic pressure to your clutch system and restore proper shifting abilities with LuK Clutch hydraulic clutch release systems. Order the model designed for fitment with your truck application.

3.77 out of 5 stars ( 30 )

$120.99

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$330.99

Powertrax Grip LS Traction Systems

Powertrax Grip LS traction systems are the latest design in differential tech upgrades. They combine the smooth operation of a limited-slip differential, with the strength of a fully machined case. These systems use carbon fiber and steel friction plate technology, delivering streetable and consistent traction. They arrive completely assembled--and because there are friction plates on machined internal gears, they are fully rebuildable. The carriers are the ideal solution for just about any light truck, sport utility, and muscle car on the road today.

4.2 out of 5 stars ( 5 )

$505.92

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$924.99

McLeod Hydraulic Throwout Bearing Line Launch Systems

McLeod hydraulic throwout bearing line launch systems are made for nearly any application to provide you with proper clutch engagement and release for many trouble free miles. These hydraulic throwout bearings are crafted from the finest hard-anodized billet aluminum, together with superior elbow swivel fittings and high-pressure stainless steel braided lines. McLeod systems eliminate the need for complex clutch linkage fabrications and will get you out on the track faster!

Not Yet Reviewed

$455.00

APR Adjustable Short Shifter Systems

APR fully adjustable short shifter systems for 6-speed manual transmissions are comprehensive upgrades to the factory gear shifter assembly, and are designed to reduce shifter movement in all directions, while simultaneously improving shift quality. The systems provide fine-tuning of front-to-back and side-to-side movements to shorten shifts; counterweight adjustments for enhanced shift quality; and upgrade the weak points of the factory setup to provide long-term worry-free use. APR short shifters are easy to install, easy to adjust—and leaves the driver spending less time shifting, and more time accelerating to the victory line! Quick fact features and benefits include: * CNC-machined, thick billet aluminum relay lever is responsible for side-to-side movement and adjustment (replaces the thin, flexible stamped metal or plastic factory pieces) * CNC-machined, thick billet shift lever is responsible for front-to-back movement and adjustment (this component houses the counterbalance weights and replaces the factory cast, spline-wear-prone piece) * Adjustment is as simple as loosening and tightening pegs or adding more weights—no disassembly required! * Slotted adjustment track on shifter allows for precise adjustment of shifter's forward and backwards travel distance * Slotted adjustment track on the relay lever allows for precise adjustment of the shifter's side-to-side travel distance * Three stackable counterweights allow drivers to change the overall feel of the system to their own preference * Stainless steel spline insert prevents the input spline from premature wear * All necessary hardware included (new friction material clips, locking nuts, and stainless steel bolts and pegs)

Not Yet Reviewed

$163.95

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$383.95

BD Diesel TorqLoc Systems

BD Diesel TorqLoc systems will allow your torque converter to work at maximum efficiency. They feature three different converter settings. The manual setting allows you to manually lock up the converter. The stock setting transfers control of the converter lockup back to your vehicle's OEM computer. The AutoLoc setting locks up the converter when the exhaust brake is activated, allowing 100 percent of the retarding forces to be transferred to the rear wheels. This setting eliminates clutch slippage under heavy torque loads, reducing transmission temperature and extending transmission life in the process.

5.0 out of 5 stars ( 1 )

$446.95

On Sale

RAM Hydraulic Throwout Bearing Travel Adjustment Systems

RAM hydraulic throwout bearing travel adjustment systems are designed for late model vehicles equipped with internal slave cylinder and bearings. Factory hydraulic systems do not allow for adjustment of the pedal position, often resulting in a high engagement point when using aftermarket clutches. The Ram system allows you to adjust your pedal position lower to the floor for better driver comfort, while allowing you to minimize the release of your clutch system for racing applications. Some vehicles experience shifting problems at higher RPM due to over centering, or over travel of the clutch fingers. By limiting this travel and setting the clutch pedal for minimum release this over travel situation can be eliminated, restoring clean shifts at high RPM.

4.75 out of 5 stars ( 12 )

$145.00

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$219.00

$130.50

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$197.10

Chevrolet Performance SuperMatic Transmission Control Systems

Chevrolet Performance SuperMatic transmission control systems make it easy to connect and cruise. These controller kits complement the ready-to-run convenience of your crate engine with plug-and-play operation. There is no additional wiring, and the leads are clearly marked to link up with the engine control harness. SuperMatic control systems are pre-programmed to provide full-function transmission operation after completing the connections. No laptop programming is required. Chevrolet revised the systems with a more compact design for a headache-free installation with your carbureted small block, big block, or ram jet engine—and they're compatible with OBDII code readers. Get in gear with the simplicity and improved shift performance offered by Chevrolet Performance SuperMatic transmission control systems.

Not Yet Reviewed

$2,155.45

American Powertrain Hydraulic Clutch Release Systems

American Powertrain hydraulic clutch release systems can help get your coupling device shifting properly to engage or disengage power from the motor to the wheels. American Powertrain systems are engineered to help you shift the right way for miles of smiles wherever you drive. Order the kit designed for fitment with your vehicle application.

2.0 out of 5 stars ( 2 )

$719.14

Clearance

Powertrax Grip Lok Traction Systems

If you are looking for the ultimate in traction, the Powertrax Grip Lok traction system can handle the torque of engines producing up to 550 hp. It combines the fully automatic locking action of the Powertrax traditional locker, with the strength of a fully machined case. Using automatic locking technology, the Powertrax Grip Lok traction system delivers automatic mechanically actuated traction. This system is the ultimate in competition for street, strip, and off-road capabilities.

5.0 out of 5 stars ( 1 )

$715.99

$394.50

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$1,255.99

RideTech 1958 Chevrolet Air Suspension Systems

RideTech 1958 Chevrolet air suspension systems are specifically designed for the 1958 Chevy B-body cars (including the Impala, Del Ray, Bel Air, Biscayne, Brookwood, and Nomad). They include everything needed to provide a lowered stance with dramatically improved handling and ride quality. These kits contain front upper and lower StrongArms, front and rear MuscleBars, plus front and rear HQ Series coilovers. Enjoy the benefits of buying a complete system that takes all of the guesswork out of your suspension upgrade. Features, items, and specs: * Must be used with 1959-64 stock spindles and disc brakes * Black powdercoated upper StrongArms feature corrected ball joint angles, and are fully assembled with ball joints, bushing, and cross shafts * Upper ball joints moved back to allow for additional caster setting (improves high speed stability and steering feel) * Black powdercoated lower StrongArms feature a double sheer lower mount for increased strength, and are fully assembled with ball joints, bushing, and cross shafts * HQ Series shocks allow fine-tuning and deliver excellent ride quality and handling with a 1,000,0001-mile warranty (rebound knob located on top of shock for underhood access) * CoolTide system using Firestone air springs * Front MuscleBar helps reduce body roll and creates room for wider front tires (includes PosiLink endlinks that provide immediate engagement between chassis and control arms) * Rear MuscleBar * Rear StrongArms provide added strength to help get the power to the pavement (includes a tubular upper wishbone specific to the 1958 model year)

Not Yet Reviewed

$4,680.00

On Sale

RAM Stock Rule Clutch Systems

RAM clutches for 'stock clutch rule' classes give you unmatched performance and durability. The 10.5 in. diameter assembly utilizes a billet aluminum pressure ring with a riveted steel heat shield that provides a durable mating surface for the clutch disc. A 3,000 lb. pressure spring provides increased static pressure over stock clutches. Used in conjunction with a RAM 6-paddle solid hub disc, this combination weighs in at just over 15 lbs. If your rules require a full facing or sprung hub disc, the RAM 300 Series organic racing disc provides the best holding power of any organic disc available and adds only about 2 lbs. to the total weight of the set. RAM offers a lightweight 17 lb. billet steel flywheel for Chevrolet that matches the above components. If you are required to use all-steel components, RAM offers a similar 10.5 in. pressure plate with a nodular iron pressure ring. This unit uses the same heavier pressure spring for increased holding power. All RAM street stock clutches are completely rebuildable.

Not Yet Reviewed

$129.00

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$855.00

$116.10

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$769.50