Electrical, Ignition & Data Systems
Power your race car and monitor its performance with premium electrical, ignition, and data systems from Quarter-Max. We carry high-performance racing batteries, custom wiring harnesses, switch panels, advanced ignition controls, and complete data acquisition systems to keep you completely dialed in at the track.
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Air Solenoid Valves & Air Switches
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Batteries & Accessories
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Delay Boxes, Dial Boards & Timers
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FuelTech USA
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Gauges
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MSD Ignition
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LED Lights
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Racepak & Data Systems
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Radio Communications & Mounts
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Starters & Accessories
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Switch Panels & Wiring Supplies
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Weather Stations
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RACEPAK 1/4" Stinger EGT Thermocouple, 28"
Racepak
Retail: $157.95$139.95Exhaust Gas Temperature is a critical indicator of the performance of a typical racing engine. Supercharged and turbocharged engines use EGT sensors rather than air/fuel sensors due to the volume of...RAC-800-TC-S4-28Retail: $157.95$139.95 -
RACEPAK 1/4" Stinger EGT Thermocouple, 32"
Racepak
Retail: $157.95$139.95Exhaust Gas Temperature is a critical indicator of the performance of a typical racing engine. Supercharged and turbocharged engines use EGT sensors rather than air/fuel sensors due to the volume of...RAC-800-TC-S4-32Retail: $157.95$139.95 -
RACEPAK 1/4" Stinger EGT Thermocouple, 36"
Racepak
Retail: $157.95$139.95Exhaust Gas Temperature is a critical indicator of the performance of a typical racing engine. Supercharged and turbocharged engines use EGT sensors rather than air/fuel sensors due to the volume of...RAC-800-TC-S4-36Retail: $157.95$139.95 -
RACEPAK 1/8" NPT Hose Extension
Racepak
Retail: $51.50$45.78This 4" long braided steel line comes with 1/8 NPT male and female ends and can minimize harmful vibrations to a pressure or vacuum sensor.RAC-810-XP-HOSEEXTRetail: $51.50$45.78 -
RACEPAK 2-Pin Molex Connector Kit
Racepak
Retail: $17.49$15.55This replacement connector can repair a damaged cable, V-Net module or sensor that connects to Racepak's Molex 2-pin connectors. Includes both male and female connectors, extra pins and sockets and...RAC-810-CN-MOL2Retail: $17.49$15.55 -
RACEPAK 3-Pin Molex Connector Kit
Racepak
Retail: $14.33$12.74This replacement connector can repair a damaged cable, V-Net module or sensor that connects to our Molex 3-pin connectors. Includes both male and female connectors, extra pins and sockets and...RAC-800-CN-MOL3Retail: $14.33$12.74 -
RACEPAK 3/16" Manifold Temperature Thermocouple
Racepak
Retail: $191.95$169.95This exposed tip Type-K thermocouple reacts quickly to changing temperatures in manifold plenum. Must be used with the appropriate thermocouple amplifier module. Probes measures 12” in length...RAC-800-TC-MT-ASMRetail: $191.95$169.95 -
RACEPAK 4 Channel Wideband Controller, Cylinders 1, 3, 5, 7
Racepak
Retail: $1,799.95$1,599.954 Channel Controller, Cylinders 1, 3, 5, 7 (For use on 1, 3, 5, 7 cylinder bank of V8, i.e. GM & Mopar) Racepak has an excellent selection of A/F controllers and sensors created specifically for...RAC-220-VM-AF4-1357Retail: $1,799.95$1,599.95 -
RACEPAK 4 Channel Wideband Controller, Cylinders 2, 4, 6, 8
Racepak
Retail: $1,799.95$1,599.954 Channel Controller, Cylinders 2, 4, 6, 8(For use on 2, 4, 6, 8 cylinder bank of V8, i.e. GM & Mopar) Racepak has an excellent selection of A/F controllers and sensors created specifically for...RAC-220-VM-AF4-2468Retail: $1,799.95$1,599.95 -
RACEPAK 8 Magnet Split Collar, 1.875" ID
Racepak
Retail: $168.95$149.958 Magnet Split Collar, 1.875" ID. Racepak's 8-magnet collars are perfect for automatic-equipped vehicles. These collars assist in picking up driveshaft RPM sooner than a conventional 2-magnet collar...RAC-800-CL-8M-1875Retail: $168.95$149.95 -
RACEPAK 8 Magnet Split Collar, 2.125" ID
Racepak
Retail: $168.95$149.958 Magnet Split Collar, 2.125" ID. Racepak's 8-magnet collars are perfect for automatic-equipped vehicles. These collars assist in picking up driveshaft RPM sooner than a conventional 2-magnet collar...RAC-800-CL-8M-2125Retail: $168.95$149.95 -
RACEPAK 8 Magnet Split Collar, 2.187" ID
Racepak
Retail: $168.95$149.958 Magnet Split Collar, 2.187" ID. Racepak's 8-magnet collars are perfect for automatic-equipped vehicles. These collars assist in picking up driveshaft RPM sooner than a conventional 2-magnet collar...RAC-800-CL-8M-2187Retail: $168.95$149.95 -
RACEPAK Air Fuel Sensor
Racepak
Retail: $155.95$137.95Air/Fuel Sensor Only (new style, for 220-VM-AF-series). Racepak has an excellent selection of A/F controllers and sensors created specifically for tuning race engines. Each of these 2 and 4 channel...RAC-810-SN-AFAMPRetail: $155.95$137.95 -
RACEPAK Air Fuel Sensor Weldment & Plug
Racepak
Retail: $14.57$12.95Weldment and plug for Racepak Air Fuel sensors.RAC-810-TX-AFWLDPRetail: $14.57$12.95 -
RACEPAK Air Temperature V-Net Module with Sensor, 0-300°F
Racepak
Retail: $310.95$275.95Temperature, Air, 0-300°F.This V-Net module allows you to measure air temperature, 0-300°F. Comes with a 72” lead. For a function to be monitored on the V-Net the signal from that function must pass...RAC-220-VP-TR-AIRRetail: $310.95$275.95 -
RACEPAK Brake Pressure V-Net Module with Sensor, 0-1500 PSI
Racepak
Retail: $418.95$371.95Pressure, Brakes, 0-1500 PSI.Brake pressure is important to monitor to ensure the driver leaves with the proper amount of brake pressure. These V-Net pressure sensors and modules plug in to your...RAC-220-VP-PT-B1500Retail: $418.95$371.95 -
RACEPAK Clutch RPM Module with Sensor
Racepak
Retail: $467.95$415.95This V-Net module and sensor allow units with a clutch RPM pickup on the harness to add clutch (input shaft) RPM monitoring to determine both clutch slip and transmission slip. Comes with...RAC-220-VP-CL-1Retail: $467.95$415.95 -
RACEPAK Clutch RPM Sensor, 3-Pin, 3/8" dia.
Racepak
Retail: $281.95$249.95Zero Crossing RPM Sensor, 3-Pin 3/8” dia. This non-powered sensor is designed for monitoring magnetic pulses. It must be used with an RPM input designed for a zero crossing sensor. This speed sensor...RAC-800-SS-ZX-3Retail: $281.95$249.95 -
RACEPAK Cylinder Head Temperature V-Net Module with Sensor, Left, 0-600°F
Racepak
Retail: $449.95$399.95Temperature, Cylinder Head, Left, 0-600°F.This V-Net module allows you to measure cylinder head temperature, 0-600°F. Comes with a 36” lead. For a function to be monitored on the V-Net the signal...RAC-220-VP-TC-HEADLRetail: $449.95$399.95 -
RACEPAK Cylinder Head Temperature V-Net Module with Sensor, Right, 0-600°F
Racepak
Retail: $449.95$399.95Temperature, Cylinder Head, Right, 0-600°F.This V-Net module allows you to measure cylinder head temperature, 0-600°F. Comes with a 36” lead. For a function to be monitored on the V-Net the signal...RAC-220-VP-TC-HEADRRetail: $449.95$399.95 -
Out of stock
RACEPAK Door Car Front Shock Travel Kit, 0-4"
Racepak
Retail: $1,743.95$1,549.95The name of the game in racing is traction, and keeping your tires firmly planted under all track conditions and surface abnormalities have become a science. Monitoring suspension deflection through...RAC-280-KT-DSHKTRVFRetail: $1,743.95$1,549.95 -
RACEPAK Door Car Rear Shock Travel Kit, 0-8"
Racepak
Retail: $1,631.95$1,449.95The name of the game in racing is traction, and keeping your tires firmly planted under all track conditions and surface abnormalities have become a science. Monitoring suspension deflection through...RAC-280-KT-DSHKTRVRRetail: $1,631.95$1,449.95 -
RACEPAK Drag Smartwire Power Control Module
Racepak
Retail: $2,699.95$2,399.95The Racepak Drag SmartWire serves as a drag vehicle's power distribution center. Solid state design eliminates traditional fue panels, breakers and relays while reducing wiring complexity and weight...RAC-500-KT-SWDRAGRetail: $2,699.95$2,399.95 -
RACEPAK Driveshaft RPM Sensor, 2-Pin, 5/16" dia.
Racepak
Retail: $188.95$167.95This speed sensor is commonly used to detect driveshaft RPM or wheel RPM. This plastic sensor has a 5/16" fine thread pitch and is triggered using magnets. Works with the following Racepak data...RAC-800-SS-PRO-5Retail: $188.95$167.95 -
RACEPAK Driveshaft RPM Sensor, 3-Pin, 5/16" dia.
Racepak
Retail: $250.95$222.95This speed sensor is commonly used to detect Drive Shaft RPM or Wheel RPM. This metal sensor has a 5/16" fine thread pitch and is triggered using magnets. Works with the following Racepak data...RAC-800-SS-MSC-5Retail: $250.95$222.95 -
RACEPAK Driveshaft Sensor Mount Bracket
Racepak
Retail: $46.74$41.55This driveshaft bracket allows you to fasten your Racepak driveshaft sensor to a 9" center section. Fits all 5/16" sensors and features slotted mount for easy adjustment.RAC-800-MB-SS-5Retail: $46.74$41.55 -
Retail: $15.74$13.99 -
RACEPAK Emergency Kit
Racepak
Retail: $224.95$199.95The Racepak Emergency Kit (REK) contains essential spare components that any racer who depends on a Racepak system should keep handy. In the heat of battle at the track, it’s easy to misplace...RAC-890-DR-REKRetail: $224.95$199.95 -
RACEPAK Fluid Temperature Sensor, 0-300°F
Racepak
Retail: $107.95$95.89This sensor is commonly used to measure the temperature of fluids such as water or engine and transmission oil where the temperature does not exceed 300°F.RAC-810-TR-300Retail: $107.95$95.89 -
RACEPAK Fuel Carburetor Pressure V-Net Module with Sensor, 0-15 PSI
Racepak
Retail: $418.95$371.95Pressure, Fuel, Carburetor, 0-15 PSI.Monitoring your regulated (carburetor) fuel pressure is important to ensure your normally-aspirated motor is receiving the right amount of fuel. These V-Net...RAC-220-VP-PT-CP15Retail: $418.95$371.95 -
RACEPAK Fuel Nozzle Pressure V-Net Module with Sensor, 0-300 PSI
Racepak
Retail: $418.95$371.95Pressure, Fuel, Nozzle, 0-300 PSI.On a supercharged application, it's important to monitor your fuel pressure after the barrel valve. These nozzle pressure modules and sensors allow you to do just...RAC-220-VP-PT-NP300Retail: $418.95$371.95 -
RACEPAK Fuel Pump Pressure V-Net Module with Sensor, 0-150 PSI
Racepak
Retail: $418.95$371.95Pressure, Fuel, Pump, 0-150 PSI.Monitoring fuel pump pressure is the best way to keep stay on top of your fuel system, and will alert you if you have a problem with your fuel delivery system. These...RAC-220-VP-PT-PP150Retail: $418.95$371.95 -
RACEPAK Fuel Pump Pressure V-Net Module with Sensor, 0-300 PSI
Racepak
Retail: $418.95$371.95Pressure, Fuel, Pump, 0-300 PSI.Monitoring fuel pump pressure is the best way to keep stay on top of your fuel system, and will alert you if you have a problem with your fuel delivery system. These...RAC-220-VP-PT-PP300Retail: $418.95$371.95 -
RACEPAK Fuel Pump Pressure V-Net Module with Sensor, 0-75 PSI
Racepak
Retail: $418.95$371.95Pressure, Fuel, Pump, 0-75 PSI.Monitoring fuel pump pressure is the best way to keep stay on top of your fuel system, and will alert you if you have a problem with your fuel delivery system. These...RAC-220-VP-PT-PP075Retail: $418.95$371.95 -
RACEPAK Head Temperature Thermocouple
Racepak
Retail: $188.95$167.95This thermocouple-type sensor monitors the temperature of the metal, not the coolant. The ring-style probe has a 12" long cable that is terminated with a two pin male miniature connector.RAC-800-TC-HT-ASMRetail: $188.95$167.95 -
RACEPAK Infrared Temperature Sensor, 0-400°F
Racepak
Retail: $467.95$415.95This infrared temperature sensor is used to monitor temperatures where contact cannot be made with the item being monitored. In racing, they are commonly used to monitor temperatures across the face...RAC-810-SN-IR-T-200Retail: $467.95$415.95 -
RACEPAK Intake Manifold Temperature V-Net Module with Sensor, Open Tip, 0-600°F
Racepak
Retail: $449.95$399.95Temperature, Intake Manifold, Open Tip, 0-600°F.This V-Net module uses a K-type thermocouple to to measure manifold temperature, 0-600°F. Comes with a 36” lead. For a function to be monitored on the...RAC-220-VP-TC-MANIFRetail: $449.95$399.95 -
Out of stock
RACEPAK Interface Bulkhead Connector
Racepak
Retail: $178.95$158.95V-Net modules and Interface modules, although similar in construction and appearance, are very different in the functions they perform. It is important that components designed for one system not be...RAC-280-CA-IM-BHEADRetail: $178.95$158.95 -
RACEPAK Interface Dust Cap, Male
Racepak
Retail: $18.89$16.79V-Net modules and Interface modules, although similar in construction and appearance, are very different in the functions they perform. It is important that components designed for one system not...RAC-280-CA-IM-DCAPMRetail: $18.89$16.79 -
RACEPAK Interface Extension Cable, 108"
Racepak
Retail: $151.95$134.95For extending Analog and Interface Module connections on V300SD, V500SD and G2X Pro data loggers.V-Net modules and Interface modules, although similar in construction and appearance, are very...RAC-280-CA-IM-108Retail: $151.95$134.95