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Buy one of these qualifying items and earn more savings! Similar to gift certificates, Summit Bucks rewards you earn today can be applied to Summit Racing orders in...

Buy one of these qualifying items and earn more savings! Similar to gift certificates, Summit Bucks rewards you earn today can be applied to Summit Racing orders in the future.*

*Not redeemable for cash; cannot be used to buy gift cards.

Buy one of these qualifying items and earn more savings! Similar to gift certificates, Summit Bucks rewards you earn today can be applied to Summit Racing orders in the future.*

*Not redeemable for cash; cannot be used to buy gift cards.

Part Groups

Results 1 - 24 of 39

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Lucas Semi-Synthetic Assembly Lube

Lucas semi-synthetic assembly lube is designed for mechanics and technicians to prelube bearings, cams, lifters, and valvetrain components. It contains zinc, moly, and other high-pressure additives, which offer maximum protection during engine break-in. Lucas semi-synthetic assembly lube is super-slick, easy to use, and will eliminate dry starts and prevent galling, seizing, and scuffing.

4.9 out of 5 stars ( 92 )

$5.99

$95.90

Summit Bucks

Clearance

Lucas Engine Assembly Grease

Lucas engine assembly grease provides anti-wear, extreme pressure properties, and dissolves completely in oil. This heavy-duty, corrosion-resistant racing grease offers protection during initial start-up and is designed for use on cams and lifters. It is also recommended for use on distributor caps, rocker shafts, rocker tips, push rod tips, wrist pins, and valve guides. Key benefits of Lucas racing assembly grease: * Made of Calcium Sulfonate Complex thickener * Suitable for all metals * Tested and approved by top NASCAR teams * 1 lb. tub is ideal for ease of application * Also offered in 5/8 oz. packets * Unique blue color

Not Yet Reviewed

$2.99


$2.50

Summit Bucks

Sonnax Premium Planetary Assemblies

Sonnax premium planetary assemblies are available in various configurations to meet different build requirements. The output shaft is available in the OEM length or short length, and the billet-machined drum flange in 12-tooth or 24-tooth. They are a big step up from standard case-hardened and tempered gears. Sonnax's top-quality racing gear material (SAE9310), combined with a freeze-tempering process (-150 degrees F), results in gears with improved grain structure and stability--tougher and more resistant to wear. Sonnax premium planetary sets are fully assembled and ready to install.

Not Yet Reviewed

$669.08

$1,205.99

Summit Bucks

Sonnax Extreme-Duty Clutch Hub and Intermediate Shaft Assemblies

The ideal upgrade for performance vehicles with the GM 6L80 or 6L90 transmission, Sonnax extreme-duty 4-5-6 clutch hub and intermediate shaft guarantees maximum protection against shaft breakage. The unique hub design improves oil flow and accepts Powerglide-style frictions to optimize clutch durability. In place of the 2-piece shaft/hub, Sonnax uses a much stronger, one-piece design that eliminates the OE assembly's weak, welded connection. It is custom forged from ultra-high-strength 300M billet steel, and then heat-treated and shot-peened for added durability. This combination of features guards against broken 4-5-6 hubs and the risk of rear splines shearing off.

Not Yet Reviewed

$1,015.08

$1,157.55

Summit Bucks

Sonnax Extreme Planetary Assemblies

Pay for what you need and get the quality you want--Sonnax planetary assemblies allow you to choose your level of performance. Their extreme assemblies offer the very best for the most demanding applications with advanced process sun and pinion gears. The 3-step process--cryogenic tempering, shot-peening, and super finish--develops gears with improved grain structure and stability, so they are tougher, more wear-resistant, and better performing. Extreme assemblies are available in four ratios, two flange tooth counts, and two output shaft lengths. Performance, quality, and value--Sonnax extreme planetary assemblies deliver them all. Sonnax extreme assemblies may feature: * Gear ratios: 1.80, 1.69, 1.58, 1.65 * 9310 advanced process sun and pinion gears * 12-tooth or 24-tooth billet clutch drum flange * HY-Tuf or 300M rolled spline long OE or short output shafts * High-strength, steel-backed, PTFE thrust washers * Maximum-duty ring gear

Not Yet Reviewed

$1,309.85

$3,773.38

Summit Bucks

Sonnax Heavy-Duty Automatic Transmission Clutch Hub and Shaft Assemblies

Sonnax heavy-duty automatic transmission clutch hub and shaft assemblies combine their HD automatic transmission clutch hubs and output shafts for a more convenient way to complete your project. They are a critical upgrade to protect any vehicle at any power level. Sonnax cryogenically treats the OE hub and shaft to make the base steel more stable, then shot peens the lubrication cross holes to greatly reduce crack formation and increase load capacity. The result is a highly reliable hub and shaft assembly that's an easy, direct replacement for all Chrysler 66RFE and 68RFE units. Avoid catastrophic gear train failure with Sonnax heavy-duty automatic transmission clutch hub and shaft assemblies.

Not Yet Reviewed

$552.90

Summit Bucks

Sonnax Planetary Carrier Assembly Bolts

Sonnax offers planetary carrier assembly bolts for applications such as GM Powerglide automatic transmissions. The 3/8 in.-16 x 1 in. button head fasteners are machined from steel (with a protective black finish) in accordance with factory specifications to ensure proper fitment and long-lasting performance. Sold in sets of 6.

Not Yet Reviewed

$13.65

Summit Bucks

Sonnax 10-Clutch Drum Kit Replacement Components

The 10-clutch drum kit is optimized for Powerglide performance applications—but over time, parts are subject to wear or become lost. Sonnax 10-clutch drum kit replacement components are available to get your transmission back up to speed.

Not Yet Reviewed

$12.66

Summit Bucks

Extreme Metal Products Gated Speed Shifters

Extreme Metal Products gated speed shifters replace your stock shifter with the ability to shift through gears without missing gears or looking at the indicator light on your dashboard. The metal gates create positive stops so you can see and feel what gear you are in. Installation is easy and EMP includes the necessary hardware and shift knob.

5.0 out of 5 stars ( 2 )

$183.99

Summit Bucks

Sonnax Smart-Tech Drum Modules

Sonnax Smart-Tech drum modules for racing GM TH400 transmissions improve on-track performance and consistency, leading to quicker ETs, more wins, and greater reliability. The TH400 is preferred for its overall durability and multitude of available ratios, but is known to be heavier and less efficient than the popular two-speed Powerglide. Part of the TH400 inefficiency results from the fact that the direct drum counter-rotates, spinning backwards in 1st gear, brakes to a complete stop on the 1-2 shift, then goes from 0 RPM to input RPM on the 2-3 shift. Significant energy is wasted through this cycle that robs power, upsets traction on the shifts, and contributes to broken internal parts. Compared to aluminum direct drums, the Smart-Tech drum module reduces the weight of the counter-rotating components by over 3.3 lbs.! And more significantly, because the weight of the Sonnax counter-rotating parts is closer to the centerline, there's a 68 percent reduction in energy required to stop and restart during the 1-2 and 2-3 shifts. The benefits are increased wheel horsepower, better acceleration, less shock on the shifts, and improved durability. * Complete kit (34555-01K) replaces both forward and direct drums and includes everything from intermediate sprag to the pump; a selection of Sonnax input shafts is available separately. * 100 percent new content, no used core pieces * Includes larger-diameter, 36-element sprag and sprag race that works with OE intermediate clutches * Includes six-friction forward clutch pack and seven-friction direct clutch pack Contents: * Forward Piston Housing * Forward Piston * Forward Piston Return Springs (16) * Forward Spring Retainer * Forward Snap Ring * O-Ring 1.674 in. * Lip Seals (2) * Direct Housing Assembly * Direct Piston * Direct Piston Return Springs (26) * Direct Spring Retainer * Direct Snap Ring * O-Ring 2.737 in. * Sprag Shaft * Front Sprag Retainer Plate * Heavy-Duty Sprag 36 Element * Outer Sprag Race * Rear Sprag Retainer Plate * Sprag Retainer Screws (4) 6-32 x 5/16 in. * Quad Ring Seals (2) * Anti-rotation Seal Rings (2) * Drum * Pressure Plate * Outer Snap Rings (4) * Bearing Small * Forward Clutch Hub * Bearing Large * Direct Clutch Hub * Steel Clutch Plates (4) .060 in. * Steel Clutch Plates (11) .077 in. * Friction Clutch Plates (13) .080 in. * Clutch Separators (60) .103 in.

Not Yet Reviewed

$3,052.40

Summit Bucks

Sonnax SmartShell Heavy-Duty Reaction Shell Kits

Sonnax SmartShell heavy-duty reaction shell kits prevent damage to the rear planetary assembly, as well as providing a reinforced shell. Stripped or cracked shells in GM 4L60, 4L60-E, 4L65-E and 4L70-E units are a common problem, but strengthening the shell alone does nothing to address the equally common problem of preventing thrust loads from overwhelming rear captured planetery bearings. From daily jobs to extreme builds, the Sonnax SmartShell heavy-duty reaction shell kits are the only way to prevent shell failure and protect the bearing.

4.71 out of 5 stars ( 21 )

$124.62

Summit Bucks

Sonnax Automatic Transmission Case Bushings

Sonnax automatic transmission case bushings are made to locate the carrier output shaft assembly. These bushings are a direct OE replacement. Sonnax automatic transmission case bushings are made from high-quality materials and is a required part in any high-quality rebuild.

5.0 out of 5 stars ( 14 )

$4.44

$58.94

Summit Bucks

Fel-Pro Performance Full Engine Gasket Sets

Fel-Pro Performance full engine gasket sets keep your mill sealed under the most grueling racing conditions, from oval tracks to dragstrips and off-road. These top-quality sets include all of the premium gaskets and seals you'll need to assemble or rebuild a performance engine. Order the kit recommended for your year/make and engine application. Additional details: * Meets or exceeds all OE specifications * Application-specific design to ensure a perfect fit * Engineered for the sealing repair environment * Unsurpassed quality you can trust * Validated for fit, form, and function

4.18 out of 5 stars ( 50 )

$85.99

$499.99

Summit Bucks

Sonnax Clutch Backing Plates

GM 6L80 and 6L90 transmissions often suffer failure of the 4-5-6 clutch assembly due to flexing and bowing of the backing plate (coning)—especially when your clutch-apply pressures exceed OE specifications. Sonnax clutch backing plates are designed to minimize flexing/bowing when the clutch is applied, drastically reducing the likelihood of clutch plate distortion. Their stiffer backing plate design outperforms OE and aftermarket plates.

5.0 out of 5 stars ( 8 )

$50.44

$132.87

Summit Bucks

Fel-Pro Performance R.A.C.E. Gasket Sets

Fel-Pro understands that there are many combinations of parts and port sizes in high-performance engines. So their Fel-Pro Performance R.A.C.E. (Remainder to Assemble Complete Engine) gasket sets allow you to purchase the correct specialized gaskets for your particular application separately, while still getting all the commonly used gaskets to complete your rebuild. These sets typically include gaskets and seals for the water pump, timing cover, fuel pump, thermostat housing, oil pump, and rear main seal. Order the replacements recommended for your year/make and engine application.

4.79 out of 5 stars ( 39 )

$25.99

$152.99

Summit Bucks

Sonnax Clutch Apply Piston Kits

Sonnax clutch apply piston kits drastically reduce the likelihood of clutch plate distortion. Due to OE design shortcomings, flexing and bowing of the backing plate is common in some GM transmissions, often causing them to suffer failure of the 4-5-6 clutch assembly. These kits increase the piston-to-plate apply ring surface area to strengthen and reinforce the assembly, along with a more rigid backing plate design that outperforms OE and aftermarket components. Sonnax clutch apply piston kits easily tackle these common weaknesses. Kits include: * Apply piston * Apply ring * Piston dam * Backing plate

4.75 out of 5 stars ( 4 )

$162.50

$228.71

Summit Bucks

Sonnax Input Housing Sleeve Kits

Input housing failure at the shaft and forward piston areas is common in high-torque 4L60, 4L60-E, 4L65-E, and 4L70-E transmissions. Also, the input drum assembly is known to crack and strip out splines where the input shaft is pressed into it (where the overrun piston rides). Sonnax input housing sleeve kits—forward sleeve kits and overrun sleeve kits—when used in combination with each other, greatly increase the maximum strength of the housing for additional torque capacity and can prevent these failures. Sonnax input housing overrun and forward sleeve kits are offered separately. Both sleeves feature high-strength, chromoly construction that increases housing torque capacity by protecting the shaft and either the forward piston or overrun piston areas. Each kit will include piston, reinforcement sleeve, and outer and inner piston seal.

5.0 out of 5 stars ( 2 )

$139.99

$229.75

Summit Bucks

Sonnax Smart-Tech Direct Clutch Drum and Shaft Kits

Failure of the intermediate stub shaft and direct drum are almost inevitable when transmissions are pushed to the limit. To maximize durability and improve clutch capacity in heavy-duty/performance vehicles, Sonnax offers Smart-Tech direct clutch drum and shaft kits, the first upgrade to eliminate every critical weakness. Most failures in these units occur where the direct drum and stub shaft connect. Even other aftermarket upgrades that rely on a heavy-duty shaft will sheer in this area under extreme conditions. Unlike two-piece assemblies, the all-in-one Smart-Tech easily handles the highest horsepower/torque levels. The unique one-piece clutch drum with integrated stub shaft is precision machined from high-strength steel to guarantee there are no splines to strip from the drum or weaken the shaft. The shaft itself is significantly thicker and 2 times stronger than the original. Due to its larger diameter, the integrated shaft must be used with the kit's custom, heavy-duty sun gear. Insufficient holding power is another area where many transmissions fall short, but installing thinner aftermarket steels and backing plates to increase clutch capacity isn't ideal. Those components increase clutch pack flex and heat build-up, making them the primary cause of repeat burn-up. To improve both performance and long-term reliability, the Smart-Tech's custom drum and piston hold an OE backing plate and seven OE frictions for 17 percent more clutch capacity than the six-friction stack-up. Sonnax Smart-Tech direct clutch drum and shaft kits feature: * One-piece design that eliminates weak point where drum splines strip and shafts break * Rugged shaft is 50 percent thicker and twice as strong as OE * Custom drum and piston deliver 17 percent more clutch capacity with optimum protection against burn-up * High-strength drum and shaft are precision-machined from hardened 8620 steel * Unique sun gear is precision-machined from 9310, heat-treated steel

5.0 out of 5 stars ( 1 )

$754.00

$1,537.27

Summit Bucks

Sonnax Big Input Shaft Kits

Stop worrying about input shaft failure when running the GM Powerglide in the most extreme applications. Sonnax offers the only big input shaft upgrade with custom components designed to work together for reliable performance. Whether you have an existing assembly or start from scratch in the gear ratio of your choice, it's the best way to connect huge power to Sonnax Extreme planetaries for great run after run with minimum downtime. The only way to prevent twist and breakage from massive torque is to increase the input shaft diameter, and the core of the big shaft system is big input shaft kit 353532-01K. The shaft strikes the perfect balance between strength and ease of installation with a 1 1/8 in. diameter and a unique, high-strength spline that still fits through the front sun gear. It delivers 35 percent more strength than standard 1 in. shafts, a dramatic upgrade for racers that want to take full advantage of the lightweight and efficient Powerglide automatic transmission. (Note: The Sonnax big shaft system for Powerglides requires changing to a 35-spline turbine hub.) Kit contents: * Shaft * Clutch Hub Big Shaft features: * Torsional, ringless design * Heat-treated, 300M steel with advanced processing * 35 splines (AOD-style) at converter Clutch Hub features: * 1.500 in. tall hub for use with 10-clutch setups * High-strength chromoly steel * Custom fit for the big shaft

Not Yet Reviewed

$1,480.72

Summit Bucks

Sonnax Input Drum Reinforcement Kits

GM 4L60, 4L60-E, 4L65-E. and 4L70-E input drum assemblies are known to crack where the input shaft is pressed into it (where the overrun clutch rides). Sonnax input drum reinforcement kits include a hardened steel sleeve that reinforces the input drum to prevent this failure. They also include a re-worked overrun piston inner seal, overrun piston, piston outer seal, and piston inner seal. No machining is required to use these kits.

5.0 out of 5 stars ( 2 )

$32.35

Summit Bucks

Sonnax Automatic Transmission Pans

Ford vehicles with C6 transmissions often have oil pan leaks. The original Ford C6 oil pans are made with thin-gauge steel. If the oil pan bolts are over-tightened, the flange at the bolt holes will warp and result in a poor gasket seal. Once the oil pan flange is distorted, it's difficult to repair and get a good seal. Sonnax automatic transmission pans are 25 percent thicker than OE, made of heavy gauge material and will resist warping at the bolt holes. The thicker flange will allow the bolts to be tightened enough to compress the gasket evenly and result in a good seal. Sonnax pans will withstand repeated assembly without damage.

5.0 out of 5 stars ( 4 )

$29.79

Summit Bucks

Sonnax Low/Reverse Sprag Rebuild Kits

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 Clutch Drum Small Parts Kits

Sonnax clutch drum small parts kits are designed to be used with their high-quality, direct replacement GM Powerglide OE drums. The kits contain components to assemble your Sonnax Powerglide clutch drum with the parts designed for it and avoid problems that arise with mixing and matching from various sources. Sonnax drum small parts kits are included in their high performance and heavy-duty product line. Contents include: * Spring retainer * Small wear plate * Large wear plate * Bushing PTFE * Large retaining ring * Small retaining ring * Large lip seal * Small lip seal * 24 springs

Not Yet Reviewed

$45.56

Summit Bucks

Sonnax Heavy-Duty Planetary Rebuild Kits

Sonnax heavy-duty planetary rebuild kits contain the components needed to upgrade your gearbox for longer service life and greater reliability. We know that some pieces frequently wear out, new replacement units can be costly, and the availability of quality aftermarket assembly components is limited. Sonnax offers replacement parts kits, which contain all of the heavy-duty components needed to rebuild your planetary transmission assembly. Kits include: * Pinion pins (6) * Needle rollers (185) * Thick pinion roller spacers (3) * Thin pinion roller spacers (12) * HD figure 8 thrust washers (3) * HD rear tab thrust washers (6) * HD rear sun gear thrust washer with bearing * Retainer plate * Endplay shim * Screws (3)

Not Yet Reviewed

$26.67

$156.62

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