Availability
The feed limit low valve in listed GM transmissions limits line pressure feed to the default disable solenoid and control valves. Feed limit low pressure is also connected to the boost ball system for "A" and "B" clutch control. This feed limit low valve is subject to significant side-load force, resulting in severe wear and pressure loss to the default disable solenoid and connected control valves. Such pressure loss can put the vehicle into default mode at high speeds, resulting in momentary wheel lockup, sudden downshift to 2nd gear, harsh shifts or a P0747 code. The feed limit low valve can wear out in as little as 30,000 miles, with many vehicles requiring service by 35,000 miles. A national recall from GM includes installing updated software that monitors valve performance and wear, then triggers a check engine light and reduced propulsion message 10,000 miles before failure. Vehicles are then limited to 5th gear, commonly referred to as limp mode, until the valve body is serviced to address the failed valve. Sonnax patented this drop-in feed limit low valve kit to overcome bore wear, restoring proper valve function immediately without the need or expense of replacing the entire valve body. The valve reroutes the balance circuit through an internal passage, significantly reducing the side-load force, while upgraded materials prevent future wear. * The kit overcomes drivability issues related to the GM 10-speed wheel lockup recall * Patented valve and sleeve combination overcomes bore wear and significantly reduces future side loading of the valve * Hardcoat anodized aluminum valve and wear-resistant sleeve combat premature wear * Drop-in Zip Valve parts install quickly and easily * Kit contents: -- Valve -- Sleeve -- Spring -- Retainer -- Drill -- Rivet (Note: The OE feed limit low valve is susceptible to premature wear and therefore a critical failure point. Replacing the valve is recommended even if the transmission isn't exhibiting problems and the valve passes a vacuum test.)
Not Yet Reviewed
$26.86
Low Range Off-Road clutch kits are available for a wide variety of years, makes, and models. LROR has done their research to find some of the best parts from several clutch manufacturers. If you're looking to replace your old worn-out stock clutch and don't need anything with more grip, LROR's Stage 1 OE-replacement clutch kits are economical and meet or exceed OEM requirements. Like almost all of their clutches, most feature DST (diaphragm spring type) pressure plates--much better than many other aftermarket clutch covers. For an upgrade, look to LROR's Stage 2 dual-surface organic and ceramic clutch kits. They easily surpass factory clutches and provide much better reliability, great engagement, and heavy-duty friction without compromising OE clutch feel. The organic material on one side reduces chatter and maintains near-stock feel. The ceramic side far surpasses woven glass or organic materials. It can handle repeated hard usage because of its impressive characteristics and much higher coefficient of friction. Low Range Off-Road Stage 3 high performance, all-ceramic clutches are their extreme-duty kits. They provide up to twice the life of factory clutches with seriously improved clamping force. Their lighter design reduces the chance of catastrophic failure due to excessive rpm and from clutch spin-down where the disc continues to spin after being disengaged. Also, ceramic clutches don't fade like conventional clutches when they get hot. You get the same solid performance hot or cold. Most Low Range Off-Road clutch kits include the following: * Clutch disc * Clutch cover/pressure plate * Pilot bearing * Release bearing * Alignment tool * Grease packet * Installation Instructions
( 1 )
$288.35
—
$433.25
Summit Bucks
In some transmissions, the low/reverse sprag elements, end caps, and retainer plates are prone to wear, while the race is often unaffected, resulting in a bind-up going into 2nd gear or a 1-2 flare. Sonnax low/reverse sprag rebuild kits allow replacement of the caps, elements, and retainer plate without the expense of buying a full sprag assembly. Select the kit designed for your transmission. Contents: * Sprag clutch element without race * End caps (2) * Retainer plate * Snap ring
Not Yet Reviewed
$65.32
Summit Bucks
Sonnax low sprag race and bearing kits are ideal replacements for lost or damaged components. They feature a thrust bearing, inner race, and 1.013 in. thickness. If you're looking for parts for your one-way clutch from an industry leader in cutting edge design, a Sonnax low sprag race and bearing kit fits the bill.
( 1 )
$29.76
Maximize the strength of your Powerglide transmission with one of these TCI Powerglide low drag tailshafts. They feature stock design casting with a billet machined tailstock and have a steel full roller bearing installed to provide ultra-low rolling resistance. The tailshafts include the necessary hardware and bolt directly onto your Powerglide case.
Not Yet Reviewed
$194.95
Boost the efficiency of your transmission with some help from the folks at TCI Automotive. These Ford C-6 low-drag planetary sets replace troublesome stock thrust washers with needle bearings to reduce friction and help extend transmission life. These low-drag planetary sets include: * Forward planetary assembly * Forward clutch hub * Reverse planetary assembly * Reverse ring gear * Rear sprag inner race * Roller bearing rear park gear
( 3 )
$414.95
—
$421.95
Summit Bucks
Sonnax externally adjustable low/reverse servo kits make band maintenance quick and easy. They offer an ideal way to improve reliability and make staging more consistent and predictable. Checking L/R band adjustment after repeated use is good practice. Unfortunately, OE servos with steel covers are difficult to adjust in a vehicle, so a quick check with such a servo installed is impractical for most racers. Sonnax externally adjustable servos provides an improved design that makes checks and adjustment of the L/R servo easy. There is no cover or access plug to remove because the adjuster itself extends through the cover. A quick check is done simply by pushing on the end of the adjuster and observing the movement of the piston relative to the servo cover. Select the kit designed for your transmission. Features: * Quickly check and adjust the low/reverse band to prevent trans-brake malfunction * Unique servo cover and adjuster design makes in-vehicle band service easy * Works with or without OE 1-2 accumulator piston Included: * 6061 Anodized billet aluminum cover * Piston * Pin * Jam nut * Cover seals -- Two PTFE, one extra * Piston seal * Cover O-ring * Pin O-ring Kit for TH400 will also include: * Cover flange O-ring * Bolts (6) * Washers (6)
Not Yet Reviewed
$353.26
ATI 2.75 low gear sets are ideal for use on motor homes, towing vehicles, street cars, and big-c.i.d., high-torque motors that are rpm-limited and are using a 4.10 rear gear. ATI 2.75 low gear sets increase your gear ratio leaving the starting line, and then go back to the original rear gear in high gear. This increase is usually equal to one numerically higher gear ratio.
Not Yet Reviewed
$487.99
RevMax Low Stall Stage 5 triple-disc billet torque converters are designed for those who have heavily modified engines or for those who tow heavy weights. The showpiece of these converters is the RevMax patented torque converter stator sprag retainer (some models). This technology cannot be purchased anywhere else! Unlike most of the competition, RevMax has redesigned the lockup clutch piston to be able to accommodate a piston damper. The billet piston and damper allow the clutch to apply smoother—which in turn puts far less strain on the input shaft. RevMax Stage 5 converters have no horsepower or torque limitations. They're available for a variety of applications, including many Dodge, RAM, Chevrolet, and GMC trucks with Mopar or Allison transmissions from the 1990s and up. Additional details: * CNC-machined billet one-piece front cover * Raybestos or Alto, high performance triple disc lockup frictions * Billet lockup apply piston with performance spring damper * RevMax proprietary CNC-machined stator designs * RevMax patented sprag retainer (not on Allison models) * RevMax proprietary input shaft seal (not on Allison models) * Billet bearing cap * Dual Torrington Bearing stator design * 4140 flanged impeller hub * 4140 hardened turbine hub * Furnace brazed impeller * TIG-welded brazed turbine * Computerized robotic welding * Precision internal clearances set to increase efficiency and improve performance * Fully pressurized and leak-tested
Not Yet Reviewed
$1,349.00
—
$1,649.00
RevMax Ultra Low Stall Stage 5 triple-disc billet torque converters are designed for those who have heavily modified engines or for those that tow heavy weights. The showpiece of these converters is the RevMax patented torque converter stator sprag retainer. This technology cannot be purchased anywhere else! Unlike most of the competition, RevMax has redesigned the lockup clutch piston to be able to accommodate a piston damper. The billet piston and damper allow the clutch to apply smoother—which in turn puts far less strain on the input shaft. RevMax Stage 5 converters have no horsepower or torque limitations. They're available for a variety of applications, including many Dodge and RAM trucks with Mopar transmissions from the 1990s and up. Additional details: * CNC-machined billet one-piece front cover * Raybestos or Alto, high performance triple disc lockup frictions * Billet lockup apply piston with performance spring damper * RevMax proprietary CNC-machined stator designs * RevMax patented sprag retainer * RevMax proprietary input shaft seal * Billet bearing cap * Dual Torrington Bearing stator design * 4140 flanged impeller hub * 4140 hardened turbine hub * Furnace brazed impeller * TIG-welded brazed turbine * Computerized robotic welding * Precision internal clearances set to increase efficiency and improve performance * Fully pressurized and leak-tested * TCRS computerized high-speed balancing to less than 5 gram * Runout tolerances of less than .005
Not Yet Reviewed
$1,399.00
—
$1,649.00
RevMax has once again pioneered and re-engineered a fix to a problem that others have not been able to with their new patent pending billet, all steel "Pro-Mod" low reverse roller clutch/sprag assemblies. As a pinnacle of years of work, the design of these RevMax assemblies retains nothing from the factory dog bone sprag and utilizes no used or reclaimed parts from any other transmission. All other competitor designs are either butchered plastic 45RFE roller clutches or a factory dog bone design. These RevMax components are a 100 percent steel design—there isn't any plastic on them anywhere—and they are a drop-in replacement and requires no machining! No core is required for the RevMax part, as there is no need for your core to build from because this is a 100 percent brand new part. Utilizing a "Pro-Mod" roller clutch that is used in cars up to 3,000 hp, this design will give you the confidence of finally being able to use the truck the way you wanted to! Make no mistake, there are no other designs on the market that have this type of RevMax technology.
Not Yet Reviewed
$699.00
Assemble your low gear with these kits from Reid Racing. These kits include: * Billet dual ring servo apply piston * Billet servo cover * Servo piston rod * Servo piston rod retainer * Special servo return spring * Special lip seal for servo * Cast sealing ring for servo * Servo cover bolts * Servo apply tube * Band apply plate * Cast iron band anchor wedge * Band adjustment screw * Band adjustment lock nut * Front pump attachment bolts * Valve body attachment bolts * Pawl bracket guide bolt
( 1 )
$230.01
Once you try RevMax ultra low stall Stage 3 torque converters, it will be clear why Revmax is known to produce the best converter on the market. The showpiece of their converters is the patented torque converter stator sprag retainer which allows smoother clutch application for less strain on the input shaft. All Revmax Stage 3 converters are rated up to 350 horsepower or 700 ft-lbs. of torque. Give your ride the powertrain it deserves with an assist from the RevMax ultra low stall Stage 3 torque converter best suited for your application. More product features, items, and specifications include: * Proprietary input shaft seal * Billet bearing cap * Dual Torrington bearing stator design * 4140 flanged impeller hub * 4140 hardened turbine hub * Furnace-brazed impeller * TIG-welded brazed turbine * Computerized robotic welding * Precision internal clearances set to increase efficiency and improve performance * Fully pressurized and leak tested * TCRS machine computerized high-speed balancing to less than 5 grams * Runout tolerances of less than 0.005 in.
Not Yet Reviewed
$799.00
Whether you need a better than stock replacement torque converter or a full-blown sled pulling converter, RevMax has you covered! RevMax low-stall Stage 4 torque converters are for those with mildly modified engines that do not tow heavy weights. Made with a CNC-machined billet one-piece front cover, high performance lockup frictions, RevMax patented sprag retainer-billet bearing cap, and a dual Torrington bearing stator design, these low-stall Stage 4 converters are fantastic for most all applications. Features and benefits: * Raybestos or Alto high performance lockup frictions * 4140 flanged impeller hub * 4140 hardened turbine hub * Furnace brazed impeller * TIG-welded brazed turbine * Computerized robotic welding * Fully pressurized and leak tested * TCRS computerized high-speed balancing to less than 5 grams * Runout tolerances of less than .005 * Assembled in Charlotte, NC by highly trained technicians * 2-year unlimited mileage warranty
Not Yet Reviewed
$1,295.00
TCI offers these low gear replacement planetary sets for several of the more popular transmissions. With additional reduction in first and second gear, these sets work great in all types of applications requiring additional gear for better takeoff. In everything from heavy drag cars to off-road 4x4s to tow trucks, an RCI low gear planetary set can improve low-end power.
Not Yet Reviewed
$672.95
—
$1,020.95
Whether you need a better than stock replacement torque converter or a full-blown sled pulling converter, RevMax has you covered! RevMax ultra low stall stage 4 torque converters are for those with mildly modified engines that do not tow heavy weights. They are made with a CNC-machined billet one-piece front cover, high performance lockup frictions, RevMax patented sprag retainer-billet bearing cap, and a dual Torrington bearing stator design. The ultra-low stall Stage 4 torque converters multi-disc design is fantastic for most all applications, unless you tow more than 10,000 lbs. regularly or produce more than 550 hp. Features and benefits: * Raybestos or Alto, high performance lockup frictions * 4140 flanged impeller hub * 4140 hardened turbine hub * Furnace brazed impeller * TIG-welded brazed turbine * Computerized robotic welding * Fully pressurized and leak tested * TCRS computerized high-speed balancing to less than 5 grams * Runout tolerances of less than .005 * Assembled in Charlotte, NC by highly trained technicians * 2-year unlimited mileage warranty
Not Yet Reviewed
$1,295.00
Beat the opposing forces with low-drag transmission components from TCI. Their low-drag tailhousings will reduce power-robbing friction and boost the efficiency of your transmission. These castings have roller bearings installed. Get in motion with TCI low-drag tailhousings.
( 4 )
$193.95
—
$215.95
On Sale
QuickTime bellhousings for Circle Track, strip, and street applications are built from high-grade steel. The cone is spun, not rolled or stamped, allowing these bellhousings to be the most dimensionally stable and accurate for today's high performance vehicles offering proven performance. Choose the size and specs needed for fitment on your particular vehicle, then bridge your transmission and engine with a QuickTime bellhousing.
( 106 )
$949.95
$712.95
—
$1,599.95
Summit Bucks
If you're looking for an easy upgrade to your automatic transmission, Sonnax Servo piston kits may be the answer. The improvement in shift quality is an immediate and noticeable value. These direct replacement kits will help to eliminate a bit of a "sloppy" gear performance caused by faulty OEM servo units. With all necessary rings and seals to prevent leakage and handle higher pressure, Sonnax servo pistons can be your link to greater band apply force. Choose the kit that matches your vehicle specs, then expect faster and firmer shifts!
( 30 )
$78.01
—
$352.46
ATI Super Bands are high performance replacements for Powerglide low gear bands, which are so critical in the operation of a race transmission. These bands are completely new cores made of invest cast steel, machined totally in-house with all-new components. Providing 21 percent more clamping area than stock bands, their lining is made of heavy-duty materials to ensure high performance and longevity. They are recommended for use with all popular dual ring servos.
( 2 )
$216.99
Summit Bucks
The Sonnax adjustable rear servo pin kit 34912-01K replaces GM TH400 and '95-earlier 4L80-E servo pins. OE pins have seven different lengths to allow for adjustment of the Low/Reverse band—but are no longer available from GM. The Sonnax pin kit has an adjustment range that covers the five longest OE pins to allow for accurate setting of the Low/Reverse servo piston travel. The pin features an O-ring groove to prevent leakage of line pressure past the case pin bore. Kit contents: * Servo Pin * Screw * (4) Small washers * (1) Large washer * (2) O-Rings
( 2 )
$31.29
RevMax billet servos are a must-have component for all high performance applications! The stock servo is notorious for cocking in the bore and causing the low and reverse band to bind and not release properly. The RevMax billet servo is guaranteed never to stick and cause this issue, and also provides great sealing capabilities by adding a second sealing ring.
Not Yet Reviewed
$59.00
Summit Bucks
Maintaining your transmission can save you from costly replacement bills. Sonnax automatic transmission replacement servo pistons feature a dual-seal design and can be used with one or two PTFE or OEM-style cast seals. Accompanying replacement components are also available from Sonnax.
Not Yet Reviewed
$62.58
Summit Racing™ automatic transmission bands are engineered for performance and reliability using high quality linings and adhesives. These bands feature steel straps and are offered in a variety of friction materials like, KEVLAR®, Alto Red, and Carbonite, for several different model transmissions.
( 2 )
$99.99
—
$207.99
Modal Header
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
