2003 CADILLAC | Summit Racing

FAST LSXR Intake Manifolds

The engineers at FAST teamed up with the airflow specialists at RHS to develop a 3-piece, polymer intake manifold. They are constructed from a proprietary advanced polymer material that offers a host of benefits over aluminum aftermarket intakes, including lighter weight and improved strength and heat dissipating characteristics. While they feature a 102mm air inlet that is perfectly suited to the FAST Big Mouth 102mm throttle body, they can also be used with stock or aftermarket 90mm or 92mm throttle bodies. Other features include integrated nitrous bungs and perfect bolt-on fitment that allows for the use of factory accessories without modifications or clearance concerns. FAST LSXR intake manifolds' 3-piece modular design allows for easy disassembly and porting. This new design gives you the ability to remove individual runners from the manifold for modification.

4.0 out of 5 stars ( 27 )

$1,210.95

FTI Performance SRL Series Billet Lockup Torque Converters

FTI Performance SRL Series billet lockup torque converters feature a computer-designed, CNC-machined billet front cover and a billet lockup piston--making premature clutch wear a thing of the past. With custom stator designs and multiple blade angle pumps, stalls are available from 2,800-4,400 rpm. They are custom-built to your exact needs and driving style. With furnace-brazed and heli-welded fins, severe-duty sprague, and anti-ballooning flanged impeller hub, these torque converters are virtually indestructible.

4.11 out of 5 stars ( 19 )

$1,099.00

FAST LSX Intake Manifolds

These FAST LSX intake manifolds are the only 3-piece Gen III composite manifolds proven to deliver increased performance without compromising bottom-end drivability or high-rpm horsepower. They easily bolt onto GM Gen III (LS1, LS2, and LS6) engines and are designed to work with the 92mm FAST Big Mouth throttle body. The new stylish black intake manifolds deliver terrific performance right out of the box and can be ported by the customer for even more flow. As requested by previous LSX customers, the FAST LSX intake manifolds feature the added benefits of corrosion-free stainless steel assembly bolts, an improved throttle body sealing flange, and O-ring gasket and threaded insert throttle body mounts that provide increased durability.

4.14 out of 5 stars ( 7 )

$1,222.95

FAST LSXRT Intake Manifolds

FAST LSXRT intake manifolds are designed specifically for GM truck engines (4.8L, 5.3L, and 6.0L) and LS1, LS2, and LS6 race applications where hood clearance is not a concern. FAST LSXRT 102mm intake manifolds follow the path chartered by the original FAST LSX Gen III intakes by featuring a modular design that allows for easy porting and disassembly and a runner design that yields an incredible 25 peak horsepower gain over the stock intake (on a stock 6.0L engine with a Big Mouth 102mm throttle body). Similar to the LSXR 102mm intake manifold for cars, the LSXRT features the ability to remove individual runners for modification. LSXRT's are constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity. While they feature a 102mm air inlet that was designed for the FAST Big Mouth 102mm throttle body, they can also be used with stock 90mm or aftermarket 92mm throttle bodies (78mm three-bolt throttle bodies require an adapter). Other features include integrated nitrous bungs and precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues. Some GM truck models may require the FAST 92mm or 102mm throttle body.

4.0 out of 5 stars ( 10 )

$1,269.95

TCI Wireless EZ-TCU Transmission Controllers

TCI Wireless EZ-TCU module kits make it even easier to control your transmission and even remotely disable it to prevent theft. These Bluetooth-enabled controllers allow you to control shift points, firmness, and aggressiveness. Data logging and self-diagnostics make it possible to optimize tuning intuitively--without the need for software, a hand-held unit, or cabling. And they also feature anti-theft—the ability to deactivate your car. TCI Wireless EZ-TCU transmission controllers feature: * Easy transmission control from your phone or tablet; no laptop or software needed * Maximum electronic control over the shift points, shift firmness, and shift aggressiveness * Data logging and self-diagnostics for optimal tuning * Anti-theft feature for disabling vehicle through app * Compatible with 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, and TCI 4x and 6x transmissions * Available for iOS and Android

2.33 out of 5 stars ( 3 )

$1,026.95

FTI Performance SRL-3 Series Billet Triple Clutch Torque Converters

FTI Performance SRL-3 Series billet triple clutch torque converters are designed for engines with some serious power! They're engineered to be locked up under full throttle and can withstand some abuse. The billet lockup piston, triple bearings, and anti-ballooning impeller hub are designed to get the job done. These converters are available in different stall torque ratios and stall ratings to match your engine and transmission combination.

3.86 out of 5 stars ( 7 )

$1,429.00

Kooks Headers Race Long Tube Headers

Kooks Headers race long tube headers will deliver high performance to your racer. Their full-length race headers are built from T-304 stainless steel and are available in several primary tube and collector diameters to match your application needs. Optimize scavenging and increase power with top-quality Kooks race long tube headers.

4.83 out of 5 stars ( 66 )

$1,192.45

—

$1,380.06

COMP Cams Thumpr LS Master Camshaft Packages

COMP Cams Thumpr LS Master camshaft packages come as a complete valvetrain parts package that is matched for specific LS applications and desired performance. COMP Cams engineers have spent countless hours testing and creating valve train component combinations that are perfectly matched for maximum horsepower and dependability, as well as creating that wildly popular Thumpr sound in GM LS applications. These packages can add anywhere from 60 to 110 hp (depending on the application). COMP Cams Thumpr LS Master camshaft packages include: * Thumpr LS camshaft * Lifters * Timing gear set * Pushrods * Valve springs * Retainers * Valve locks * Spring seats * Valve seats

4.0 out of 5 stars ( 8 )

$1,288.95

PowerStop Z36 Truck and Tow Brake Upgrade Kits with Calipers

PowerStop is on a mission to deliver an easy and affordable way for any driver to upgrade their brakes--no matter where or how they use their vehicle. PowerStop Z36 Truck and Tow brake upgrade kits with calipers are recommended for trucks, 4x4s, and SUVs that not only work hard, but play hard as well. These brake pad, rotor, and caliper kits come with everything you need, including premium stainless steel hardware, for an easy, bolt-on installation. PowerStop's Z36 Extreme low-dust ceramic brake pads are reinforced with carbon fiber to provide severe-duty stopping power without sacrificing everyday drivability. They are paired with drilled, slotted, and zinc plated rotors that keep brake temperatures down by maximizing heat dissipation, critical for those long mountain descents. The bright red powdercoated calipers are not only protected against corrosion, but also stand out behind your wheels. Whether towing a boat or trailer, hauling for the jobsite, or tackling a tough off-road trail, choose easy and affordable, bolt-on performance upgrades—PowerStop Z36 Truck and Tow caliper brake kits.

4.64 out of 5 stars ( 565 )

$1,011.96

—

$1,050.96

Nitrous Outlet Dedicated Fuel Systems

Separate and specific, a setup just for your nitrous--dedicated fuel systems from Nitrous Outlet. A fuel enrichment system devoted to your nitrous removes the strain from your vehicle's stock system and gives you more control. These dedicated setups come with custom-built, lightweight, high-density plastic or heavy-duty, hand-welded aluminum fuel cells. A fuel pump, regulator, hose, fuel lines, and fittings complete the systems. Just about all of them are compatible with high or low fuel pressure by changing a spring inside of the fuel regulator, and they require no modifications to install. Create a distinct setup for your nitrous with Nitrous Outlet dedicated fuel systems.

4.0 out of 5 stars ( 1 )

$1,224.99

USA Standard Gear Ring and Pinion Gear and Differential Combos

USA Standard Gear ring and pinion and differential combos save time and money by including everything you need in one simple part number. Quick Kits feature a USA Standard ring and pinion gear set, Master Install Kit with high-quality Koyo bearings, and required small parts to get vehicles back on the road quickly. The gear and install kits include axle bearings and seals. Many of these combo kits include Dura Grip differentials, depending on application. Order the USA Standard Gear ring and pinion gear and differential combo designed to fit your application.

5.0 out of 5 stars ( 4 )

$1,107.99

—

$1,475.99

Hays Twister Full Race Torque Converters

Hays Twister Full Race Torque Converters feature a custom-designed anti-balloon plate to stop any converter ballooning and swelling in racing situations. These torque converters are designed for use with a trans-brake and great for power adders such as nitrous, superchargers, and turbos. They're available with various RPM stall speed offerings to accommodate any mixture of modifications—including higher compression ratios, aftermarket camshafts, aftermarket cylinder heads, lower gear ratios, and vehicle weight loss. Additional product features: * All Full Race Series converters are built, tested, and proven to support up to 1,000 hp * Designed to handle the extreme shock and abuse of trans-brakes, nitrous oxide, superchargers, and turbochargers * State-of-the-art spray welding process is used in select areas. Spray welding provides clean, strong, and consistent fusion while also increasing strength through hardening from higher process temperature * Each converter is hand-built and inspected in every step of assembly to ensure top-of-the-line quality * All Hays torque converters are internally welded, compared to brazing. Testing has shown welding provides longer converter life while also enhancing consistency * Heavy-duty Torrington bearings are used for greater strength and durability * Stators are chosen with high-flow vents and channels to promote cooling in heat-producing higher horsepower applications * Increased horsepower and acceleration due to a weight-saving, one-application design. Almost all Hays converters are built for one application to reduce weight, compared to a multi-bolt pattern converter * Full Race Series torque converters are offered in several different stall speeds for popular automatic transmissions.

5.0 out of 5 stars ( 1 )

$1,299.95

—

$1,449.95

Rough Country N3 Suspension Lift Kits

Rough Country offers N3 Series suspension lift kits for thousands of trucks from the late 1960s and up—including models from Chevrolet, GMC, Cadillac, Dodge, RAM, Ford, Jeep, Toyota, Nissan, and Mazda. Depending on the application, these kits enable you to raise the front and/or rear of your vehicle anywhere from 1.5 in. to 7.5 in. This is accomplished via a variety of lift component options, such as steering knuckles, torsion bar keys, spacers, strut kits, A-arm brackets, coil springs, leaf springs/blocks, upper control arms, Add-a-Leaf, and shackles. Suspension lift kits provide many benefits, including an aggressive stance, a clean level look, increased ground clearance, and plenty of ride height to accommodate larger tires. Rough Country kits feature front and/or rear N3 nitrogen-charged shocks for incredible ride quality on- and off-road. Most kits are 100 percent bolt-on, requiring no cutting, drilling, or welding. Enhance your rig with all-new stature; order the lift kit recommended for your truck!

3.5 out of 5 stars ( 16 )

$1,199.95

Hays Twister 3/4 Race Torque Converters

Hays Twister 3/4 Race performance torque converters are designed to be the perfect solution for your street/strip machine. Hays designed the Twister torque converters to be one step short of being a "Full Race" converter giving you the perfect combination of performance and affordability. Every torque converter is hand built, inspected and tested to ensure they meet the top of the line quality you expect. To ensure consistency and improve performance each converter is built for one transmission with one bolt pattern, meaning a lighter converter to maximize performance. High flow stators promote better cooling and heavy duty Torrington bearings are used to increase strength and durability. Not ready to go a "Full Race" converter, Hays is there for you with their Twister 3/4 Race torque converters.

3.18 out of 5 stars ( 11 )

$1,024.95

Nitrous Express 4-Bolt Plate Nitrous Systems for GM LS Engine

Nitrous Express 4-bolt plate systems for GM LS-style engines feature a billet 90mm or 102mm nitrous plate that installs between the throttle body and intake manifold, making installation quick, easy, and attractive. Power levels can be adjusted between 50, 100, 150, 200, 250, 300, 350 and 400 horsepower. The systems are pre-machined with a second set of nitrous and fuel passages so you can easily upgrade to a dual stage system down the road. (Special note: These kits will work on 2010 and newer Camaros if you rotate the throttle body 180 degrees.) Order the model best suited for your setup. Systems include: * 90 or 102mm nitrous plate * Choice of no bottle, 5 lb., 10 lb., 12 lb., or 15 lb. bottle * Stainless bottle brackets (except no bottle system) * ProPower Lightning Series solenoids * 6 AN feed line * Braided stainless steel solenoid to plate lines * Master arming switch * WOT switch * Every nut, bolt, and electrical connector needed to complete installation

4.0 out of 5 stars ( 3 )

$1,040.21

HushMat Complete Vehicle Insulation Kits

HushMats complete vehicle insulation kits serve two important functions: reducing thermal transfer into your interior, and reducing the noise level by up to 15 decibels. Your engine, headers, manifold and exhaust generate tremendous heat that transfers to the metal firewall and floor—forcing your A/C system to work harder to maintain a comfortable environment. HushMat auto heat shield is proven to lower this temperature by over 40 percent. At the same time, when you drive on the highway at 65 mph, most vehicles approach 80 to 90 decibels of noise. That's like a vacuum cleaner or garbage disposal running on your passenger seat. These insulation kits use a specially designed sound deadening material to deliver a more peaceful ride. Each kit is packaged specifically for your vehicle to provide 100 percent insulation coverage—no holes in the material and no puzzle pieces to assemble. Treat your firewall, doors, floor, tunnel, rear wheel wells, trunk floor, and roof with these HushMat barriers. Order the complete insulation kit designed for your specific vehicle. Additional details: * Reduces road noise and vibration, low-frequency noise from 0 to 1,000 Hz * Stay warmer in the winter and cooler in the summer; withstands ambient temps from -30 up to +550 degrees F * Lightweight and super flexible mats; less than 1/8 in. thick and 0.47 lbs. per sq. ft. * Adhesion is guaranteed; no alcohol or acetone wash needed; no tools required * Trims easily with standard razor knife or household scissors * Self-adhesive peel-and-stick; no glue required * Outperforms closest competitive brand by over 40 percent * OEM approved; meets or exceeds auto damping specs GMO 149M – General Motors; WSB-M5G58-A1 – Ford; and MS-CD 629 Type C – Chrysler

5.0 out of 5 stars ( 1 )

$1,148.12

—

$1,486.18

BAK BakFlip F1 Tonneau Covers

BAK Industries BakFlip F1 tonneau covers are constructed with a fiberglass-reinforced polymer top and an aluminum underside. This gives them exceptional strength--a 400 lb. weight capacity, from a 50 lb. cover! The core is high-density EPS and stays cool to the touch. They have a great looking, fiberglass, UV-treated, powdercoated finish that stands up to years of use and exposure. Installation is nearly effortless--BakFlip F1s install in less than 45 minutes, with no drilling required, and can be removed in about 2 minutes! These covers feature newly designed rubber side seals that attach with a tongue and groove system, not tape. Their reinforced aircraft-grade aluminum panel frames feature integrated drain channels. All frame components are constructed from glass-filled nylon, and they're never painted, so no screws will peel or rust! BakFlip F1 tonneau covers' modular locking arm keeps these covers up and allows you to drive with the covers open when needed. You can access your entire truck bed without removing the BAK BakFlip F1 covers--simply flip them open to reveal 1/4, 1/2, 3/4, or the entire bed. The covers are constructed with weatherproof material that's extremely watertight to keep your cargo secure and dry. In any temperature, and with every load, BAK BakFlip F1 tonneau covers give you the great looks, peace of mind, and fuel economy that you're looking for!

4.5 out of 5 stars ( 2 )

$1,399.99

Arnott Coil Spring Conversion Kits

Arnott coil spring conversion kits are expertly designed to replace a vehicle's failing air suspension components with traditional steel springs. All of Arnott's coil springs are constructed from U.S. steel and are designed and tested to provide a great ride along with many years of trouble-free driving. If you have an older vehicle or you're dealing with a multitude of air system issues—order the Arnott coil spring conversion kit designed for your make and model. Items, features, and notes: * Custom valved shock absorbers * Powdercoated coil springs * Most kits available with electronic bypass module (EBM) that eliminates fault codes * Pre-assembled for safe and easy installation * OE fit with no necessary modifications * Not recommended for customers who tow larger trailers or often carry large loads (may cause improper angles for headlight beams)

4.57 out of 5 stars ( 30 )

$1,126.50

—

$1,127.58

Nitrous Outlet Nitrous Oxide Plate Systems

Nitrous Outlet nitrous oxide plate systems come out of the box ready to deliver superior atomization. They spray up to 200 hp, but are capable of flowing up to 400 hp with additional jetting and a -6 AN main feed line upgrade. You'll get race-proven performance from the unique 6-port discharge design, guaranteeing the perfect mixture of fuel to nitrous. Overview: * Max flow 400 hp * 400+ hp solenoids * Anodized black aluminum plate and bottle (if included) * Wide-open throttle activation switch * Hardware, electric, and jetting included * E85 compatible with different jetting * Jetting included for 50 to 200 hp

4.0 out of 5 stars ( 3 )

$1,018.99

—

$1,289.99

Rough Country V2 Suspension Lift Kits

Rough Country V2 suspension lift kits offer your vehicle a more commanding presence with a more aggressive stance and a smooth factory-like ride. These suspension kits provide everything needed to lift your vehicle, giving you increased ground clearance to run larger tires while reducing the nose-down factory look. The kits feature Rough Country's V2 monotube shocks delivering incredible ride quality and performance. Choose the lift kit designed for your vehicle. V2 shock features: * Monotube design * Internal floating piston * Nitrogen-charged * 46mm high-flow piston * Fast heat dissipation * 36kN tensile strength * Mounts inverted * T6061 brushed aluminum body * 3-year Manufacturer's Warranty

5.0 out of 5 stars ( 1 )

$1,359.95

Zumbrota Remanufactured Axle Assemblies

Zumbrota Drivetrain remanufactured axle assembles offer reliable performance at a value price. They're available for thousands of applications—from passenger and off-road vehicles, to race cars and pulling trucks. The axle tubes are straightened to OE specifications; the housings are hydro-blasted and rinsed, then tested for surface wear and cracks; and the gear patterns and rolling torque are properly adjusted to ensure optimum tooth contact. Zumbrota replaces all seals, bearings, crush sleeves, pinion nuts, and shims on the front and/or rear axle assemblies. Order the replacement model recommended for your specific vehicle.

4.0 out of 5 stars ( 9 )

$1,090.99

KMC KM445 Impact Forged Beadlock Wheels

The KMC KM445 Impact forged beadlock wheels provide the ultimate off-road performance while combining a beautiful architecture. Forged from a durable cast aluminum in a one-piece construction, the KM445 Impact Beadlock features a spoked face and a stepped lip and the raw finish covering the entire wheel is enhanced by the true beadlock ring. The raw machined finish lends itself to the no nonsense nature of this KMC wheel and instead showcases its performance defining capabilities. The spokes are enhanced by milling located in the "V" of the split between each spoke. Spoked wheels and race/Baja styles are what KMC specialize in, and the KM445 Impact puts those features on display. To top off the race wheel look and functionality, there is no center cap. This KMC wheel is intended for off-road use only. Order the size for your application needs.

Not Yet Reviewed

$1,029.00

South Bend Clutch Stage 1 Heavy-Duty Clutch Kits

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.

4.82 out of 5 stars ( 17 )

$1,022.79

On Sale

AMP Research PowerSteps

AMP Research PowerSteps are full length automatic electric-powered running boards that instantly extend when you open your door, and then hide themselves safely out of sight when the doors close for improved ground clearance, aerodynamics, and appearance. And their attractive design and legendary reliable, all-weather performance sets a new industry standard. Features include: * High-strength, diecast aluminum-alloy linkage arms, anodized and PTFE coated to resist corrosion * Precision, zero-maintenance stainless-steel pivot pins * Extruded aluminum steps with a textured powdercoated finish for maximum grip and durability * Weatherproof, OEM-quality electric motors and wiring harness with sealed weathertight connectors * AMP-designed electronic controller employs pressure-sensitive, pinch-proof safety technology * Integrated LED light system (standard) * 600 lbs. load capacity (each side)

4.55 out of 5 stars ( 84 )

$1,649.99

$1,449.99

2003 CADILLAC Parts and Accessories