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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QM Replacement Cable
Quarter-Max
$62.997 foot cable to the cable arming kit product #214215QM-214215-1$62.99 -
QM Rubber Grommet, 1-1/16" Panel Hole Size, 3/4" Bore Diameter
Quarter-Max
$0.72Protects wire, cable and hoses passing through metal plates and panels - such as the ones used to deploy parachutes through body panels and firewalls. Specifications:• Bore Diameter: 3/4"• Panel...QM-218003-7$0.72 -
QM Rubber Grommet, 11/16" Panel Hole Size, 7/16" Bore Diameter
Quarter-Max
$0.72Protects wire, cable and hoses passing through metal plates and panels - such as the ones used to deploy parachutes through body panels and firewalls. Specifications:• Bore Diameter: 7/16"• Panel...QM-218003-5$0.72 -
QM Rubber Grommet, 5/8" Panel Hole Size, 3/8" Bore Diameter
Quarter-Max
$0.72Protects wire, cable and hoses passing through metal plates and panels - such as the ones used to deploy parachutes through body panels and firewalls. Specifications:• Bore Diameter: 3/8"• Panel...QM-218003-1$0.72 -
QM Rubber Grommet, 7/16" Panel Hole Size, 1/4" Bore Diameter
Quarter-Max
$0.72Protects wire, cable and hoses passing through metal plates and panels - such as the ones used to deploy parachutes through body panels and firewalls. Specifications:• Bore Diameter: 1/4"• Panel...QM-218003-6$0.72 -
QM Rubber Grommet, 7/8" Panel Hole Size, 5/8" Bore Diameter
Quarter-Max
$0.72Protects wire, cable and hoses passing through metal plates and panels - such as the ones used to deploy parachutes through body panels and firewalls. Specifications:• Bore Diameter: 5/8"• Panel...QM-218003-2$0.72 -
QM SB 175 Series 2 Gauge Contact
Quarter-Max
$8.39This is the essential Contact component for the SB® 175 Series Anderson Powerpole® connectors, rated for 175 Amps. Each contact is designed to be used with the unique genderless Powerpole® housing...QM-610002-4$8.39 -
QM Shifter & Delay Box Mount
Quarter-Max
$179.99Locate your Biondo Mega 450 (or similarly sized) delay box within easy reach of the driver for keyboard usage and visibility. The laser cut bracket for the delay box is to be welded to an automatic...QM-205112$179.99 -
QM Shifter & Delay Box Mount with Drive Shaft Loop
Quarter-Max
$238.34Locate your Biondo Mega 450 (or similarly sized) delay box within easy reach of the driver for keyboard usage and visibility. Available in either the laser cut panel or the tubular mount. Includes...QM-205113$238.34 -
$11.54 -
QM Single Battery Tray
Quarter-Max
$99.99Fabricated for racers who demand more than a "universal" fit, this mount offers a rock-solid foundation for your electrical system. Whether you're running a heavy-duty lead-acid battery for a...QM-214114-1$99.99 -
QM Single Plug Battery Charge Mount, Large
Quarter-Max
$26.24Single Plug Battery Charge Mount, Large Designed to mount our Single Plug Battery Charge Kit, Large 214127. Brackets are made of .060 in. aluminum. Install by bolting or gluing to the body.The kit...QM-211649$26.24 -
QM Single Plug Battery Charge Mount, Small
Quarter-Max
$30.44Single Plug Battery Charge Mount, SmallDesigned to mount our Single Plug Battery Charge Kit, Small 214153. Brackets are made of .060 in. aluminum. Install by bolting or gluing to the body. The kit...QM-211649-1$30.44 -
QM Small Battery Charge Mount, 4130
Quarter-Max
$6.29Easily mount the Single Plug Battery Charge Kit (QM-214153) to your chassis with these purpose-built brackets. Crafted from durable .050 in. 4130 steel, this mount bracket is designed for a secure,...QM-410887-1$6.29 -
QM Small Vibration Mount - 8-32 Thread
Quarter-Max
$7.34Vibration mounts help protect your valuable and sensitive computer and electronic equipment from the extreme vibrations which occur while your car is running. Â 8-32 threads.QM-211655$7.34 -
QM Solid State Battery Disconnect Switch Bracket
Quarter-Max
$22.04This Quarter-Max Solid State Battery Disconnect Switch Bracket was designed to be used with the Modern Racing Solid State Battery Disconnect. The Modern Racing switch is required to be used in NHRA...QM-410150$22.04 -
QM Split Collar Magnet
Quarter-Max
$10.49Use this magnet inside of the split collars. Â Each magnet measures .25" OD x .25" in length.QM-207108$10.49 -
$28.34 -
QM Standard Switch Panel Jumper Strip
Quarter-Max
$30.44Make wiring your standard QM switch panel a ease with this 1/8" copper jumper strip. The jumper strip ties all your switches together.QM-410584$30.44 -
QM Start Button Bracket
Quarter-Max
$4.19Start button Bracket base Material 14 gauge mild steel.QM-410291$4.19 -
$9.44 -
QM Starter Button Mount
Quarter-Max
$6.29Starter buttonMaterial 0.1825 4130 Â Hole size .2650"QM-410111$6.29 -
QM Starter Button-Toggle Switch Low Profile Wrench
Quarter-Max
$9.44This thin wrench is designed to tighten the jam nuts on starter buttons and toggle switches. If you would use a standard wrench to try to tighten these jam nuts they are normally to thick to fit in...QM-410918$9.44 -
QM Starter Solenoid
Quarter-Max
$57.74Our heavy duty solenoid is designed for continuous use and is able to handle the high amp loads generated with dual 16 volt battery systems common in race cars.QM-214137$57.74 -
QM Steering Wheel Button Mount, Single, Black Anodized
Quarter-Max
$22.04This steering wheel button mount can be used to mount the line lock button 206114. Includes hardware.Specifications:• Material: Aluminum• Color: Black AnodizedSold individually.QM-206130-B$22.04 -
QM Steering Wheel Button Mount, Single, Raw
Quarter-Max
$15.74This steering wheel button mount can be used to mount the line lock button 206114. Includes hardware.Specifications:• Material: Aluminum• Color: RawSold individually.QM-206130$15.74 -
QM Super Bright Interior Lights
Quarter-Max
$31.49This super bright interior light features a long-lasting working life up to 50,000 hours. It has low power consumption, which saves your power supply.Specifications: • DC 12-24V• LED Style: High...QM-214162$31.49 -
$15.74 -
QM Timing Light Mount
Quarter-Max
$37.79Mount to firewall and use for power supply for your timing light.QM-211657$37.79 -
QM Universal Weld-In Battery Tray
Quarter-Max
$41.99Secure your power plant with the Quarter-Max Battery Tray, designed for racers who prioritize weight distribution and structural integrity. This heavy-duty, weld-in solution offers a permanent,...QM-314114$41.99 -
QM Vibration Mount
Quarter-Max
$9.44Vibration mounts help protect your valuable and sensitive computer and electronic equipment from the extreme vibrations which occur while your car is running.  1/4-20 Threads  1/2" tall 1...QM-600010-3$9.44 -
QM Weather Pack Connector Kit with Tools
Quarter-Max
$169.99Everything thing you need to do the weather at the track or in the garage. Â Kit includes 64 complete weather packs with all the needed seals and terminals to do the job. Â Includes all the necessary...QM-110102$169.99 -
QM Weld On Radio Mount
Quarter-Max
$17.84The weld-on radio mount welds to a 1-5/8" tube. the bolt-on mount can be mounted anywhere. Both fit most universal racing radios.  Made of .050 ms  Sold EachQM-410594$17.84 -
QM Welded Shifter & Delay Box Mount
Quarter-Max
$127.04Locate your Biondo Mega 450 (or similarly sized) delay box within easy reach of the driver for keyboard usage and visability. The bracket for the delay box is welded to an automatic shifter mount...QM-205112W$127.04 -
QM Wheelie Bar Load Cell with 1/2" Hole x 3/4"-16 Thread, 4130
Quarter-Max
$415.79Exclusive QM Wheelie Bar Load Cell designed to be stronger than any other load cell on the market. Relay the amount of force applied on your wheelie bars to your Racepak with this load cell. Fill the...QM-219705-2$415.79 -
QM Wheelie Bar Load Cell, 5/8"-18 Female x 3/4"-16 Male, 4130
Quarter-Max
$391.64Relay the amount of force applied on your wheelie bars to your Racepak with this load cell. Fill the load cell with brake fluid and install the sensor into the 1/8" NPT port. Modification of...QM-219705$391.64 -
QM Wire Ties
Quarter-Max
$8.40 - $13.00Clean up your wires and hoses using our convenient value pack of black wire ties. Sold in packs of 100.QM-218004$8.40 - $13.00 -
RaceAir Cloud Weather Station with Texting
Computech
$1,417.45The RaceAir Cloud Racing Weather Station is the most accurate and comprehensive trailer weather station on the market. Computech gives you every weather variable you need including sunlight intensity...COMP-3300$1,417.45 -
RaceAir Cloud Weather Station with Texting & Paging
Computech
$2,677.45The RaceAir Cloud Racing Weather Station is the most accurate and comprehensive trailer weather station on the market. Computech gives you every weather variable you need including sunlight intensity...COMP-3310$2,677.45 -
RaceAir Cloud Weather Station with Texting & Wind
Computech
$1,679.95The RaceAir Cloud Racing Weather Station is the most accurate and comprehensive trailer weather station on the market. Computech gives you every weather variable you need including sunlight intensity...COMP-3305$1,679.95