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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PCT3-P Pro Cube Plus Delay Box with 3 Timers
K&R
$555.45SMALL IN SIZE – HUGE IN FEATURES PRO-DIAL DIAL BOARD OUTPUTS-- (2) Fiber optic outputs capable of of controlling TWO Pro-Dial dial boards. Automatically sends your dial-in to any of our Pro-Dial...K&R-PCT3-P$555.45 -
Pressure Switch, 18 PSI, 1/8" NPTF Male, For Pro-Lite Warning Light
AutoMeter
$34.64Closes at pressures 15 PSI and lower, opens at 18 PSI and higher.AUT-3241$34.64 -
Pro Mod Blower or Turbo System with Coil On Plug Application
Speedwire Systems
$1,375.50Pro Mod blower or turbo with coil on plug applications. Can be configured without the coil on plug dual relay module as well for mechanical blower applications.This kit includes the brackets and LED...SPW-SWS382BRLED$1,375.50 -
Pro Mod Blower System, Non EFI
Speedwire Systems
$1,149.75This system is for blown Pro Mod non EFI, this does not require the dual relay module for coils and injectors as they will have a mag and mechanical injectors.This kit includes the brackets and LED...SPW-38BRLED$1,149.75 -
QM .332" ID x .500" OD x 1.125" W Threaded Bushing, Battery Tray, 4130
Quarter-Max
$14.99Threaded Bushing, Battery TraySpecifications:• I.D.: .332"• O.D.: .500"• Width: 1.125"• Thread: 3/8"-24• Material: 4130QM-420581$14.99 -
QM .406" ID x .625" OD x .750" W Bushing, Battery Hold Down, 4130
Quarter-Max
$13.99Specifications:• I.D.: .406"• O.D.: .625"• Width: .750"• Material: 4130• Commonly used to weld to the the battery hold downQM-420408$13.99 -
QM 125-Amp Disconnect Switch
Quarter-Max
$52.49Required by most sanctioning bodies, the master disconnect switch cuts off all electrical power in the car. Hardware and instructions included. Order a custom, laser cut bracket for this switch.QM-214116$52.49 -
QM 125-Amp Lever
Quarter-Max
$26.24This black anodized CNC lever is used to convert a master disconnect to a "push-off" style. Fits switch #214116QM-214116S$26.24 -
QM 12V LED Red Brake Light
Quarter-Max
$25.19Upgrade your vehicle's safety and style with our high-performance 12 Volt LED Brake Light. Designed for maximum visibility and durability, this light ensures you are seen clearly whenever you slow...QM-214152$25.19 -
QM 12V LED White Interior, Exterior Light
Quarter-Max
$25.19Upgrade your vehicle's safety and style with our powerful, high-performance 12 Volt LED White Light. Designed for maximum visibility and durability, this light is perfect for illuminating the...QM-214152-1$25.19 -
QM 18v Battery Charger Kit
Quarter-Max
$489.29O2 sensor 18V battery kit. Included in kit: billet aluminum battery mount, Qty – 2 18V batteries and charger. Wire this 18V battery to your car and it will run your o2 sensors and save voltage on...QM-214157$489.29 -
QM 18v Lithium Battery Mount
Quarter-Max
$207.8918 volt mount that transfers voltage from battery to the electrical device.QM-214155$207.89 -
QM 3/4" Black Heat Shrink
Quarter-Max
$4.19Quarter-Max presents the ultimate high performance covering, offering protection from heat, abrasion and chemical attack. Easily shrink to size using hot air. Size 3/4" ID Sold per foot22228$4.19 -
QM 3/4-16 LH x 1-1/4 in. .065 in. Tube Adapter, 4130, Short Style, Load Cell
Quarter-Max
$26.24Our tube adapters are CNC-manufactured in-house to high-quality specifications. Specifications:• Thread: Left-hand• Thread Size: 3/4-16• Size: 1-1/4 in. OD x .065 in. W tube• Style: Short• Commonly...QM-218219-L$26.24 -
QM 3/4-16 RH x 1-1/2 in. .065 in. Tube Adapter, 4130, Short Style, Load Cell, 1-1/4 in. Wrench Flats
Quarter-Max
$28.34Our tube adapters are CNC manufactured in-house to high quality specifications. Specifications:• Thread: Right hand• Thread Size: 3/4-16• Size: 1-1/2 in. OD x .065 in. W tube• Style: Short• Material:...QM-218225$28.34 -
QM 3/4-16 RH x 1-1/4 in. .065 in. Tube Adapter, 4130, Short Style, Load Cell
Quarter-Max
$26.24Our tube adapters are CNC manufactured in-house to high quality specifications. Specifications:• Thread: Right hand• Thread Size: 3/4-16• Size: 1-1/4 in. OD x .065 in. W tube• Style: Short• Commonly...QM-218219$26.24 -
QM 3/4-16 RH x 1-1/8 in. .058 in. Tube Adapter, 4130, Short Style, Load Cell
Quarter-Max
$26.24Our tube adapters are CNC manufactured in-house to high quality specifications. Specifications:• Thread: Right hand• Thread Size: 3/4-16• Size: 1-1/8 in. OD x .058 in. W tube• Style: Short• Commonly...QM-218220$26.24 -
QM Air Solenoid Valve, 150 PSI
Quarter-Max
$73.49This high quality 12V 4-way 2-position/spring return air solenoid can be used on activating accessories like shocks, parachutes, etc. For normally open or closed applications. Recommended for any...QM-219521$73.49 -
QM Air Solenoid Valve, Normally Closed, 250 PSI
Quarter-Max
$229.49This high quality 12V air solenoid can be used to bleed off accessories like shocks. For normally closed applications. Will not work for normally open applications.Recommended for any regulators over...QM-219521-2$229.49 -
QM Air Solenoid Valve, Normally Open, 250 PSI
Quarter-Max
$199.49This high quality 12V air solenoid can be used to bleed off accessories like shocks. For normally open applications. Will not work for normally closed applications.Recommended for any regulators over...QM-219521-1$199.49 -
QM Air Switch
Quarter-Max
$71.39Used when air is needed to activate a switch. Has quick release 5/32" hose connectionQM-214303$71.39 -
QM Battery Cable Kit
Quarter-Max
$83.99You get 20’ of #4 stranded copper cable, 10 nylon loop clamps, and 8 crimpable copper lugs in our battery cable kit.QM-214125$83.99 -
QM Battery Cable, 4 Gauge
Quarter-Max
$5.24Specifications:• Insulated copper• 4 gaugeSold per foot.QM-610006-#4$5.24 -
QM Battery Charge Receptacle Mount, Recessed
Quarter-Max
$31.49Use this fabricated mount to install the battery charge receptacle to the bumper or other convenient areas of the car. The mounting flange features 4 pre-drilled holes to accept 6-32 screws...QM-0004$31.49 -
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QM Black Battery Terminal Protector
Quarter-Max
$8.39Protect your cable ends with this rubber protector. Fits a 1 to 2 gauge wire.QM-610106$8.39 -
QM Carbon Fiber Dash for RacePak Dash
Quarter-Max
$286.64Use this carbon dash to add a sleek finish around your digital RacePak Ultra Dash. Quarter turn fastener bolt-in place to help hide the wires.QM-211632$286.64 -
QM Clutch Can Work Light
Quarter-Max
$25.19Mount this 12 LED Light in the clutch area to service your clutch. This light can be mounted anywhere a light source is needed. Dimensions 7-3/4" L x 3/4" H x 1" DQM-214161$25.19 -
QM Clutch Light Weld On Bracket
Quarter-Max
$4.19Use this Weld on bracket to mount your clutch light.QM-410539$4.19 -
QM Clutch Switch with Adjustable Arm
Quarter-Max
$167.99This roll switch is typically mounted behind the clutch pedal and is commonly used to activate an ignition two step RPM switch, delay timer, or nitrous system accessories. Features a 9’ long four...QM-198101$167.99 -
QM Computer Mount
Quarter-Max
$99.74Our computer mount can accommodate any standard sized data acquisition computer system.QM-211654$99.74 -
QM Delay Box Flat Mount
Quarter-Max
$75.59This delay box mount is designed to mount the Mega 450 (or similar box) in any number of locations. Includes a 3/4" diameter pre-bent tube to make mounting an ease. Welding required.QM-205116-1$75.59 -
QM Digi-Set Timer
Quarter-Max
$108.14Used to change shock settings or activate a second stage of nitrous or nearly anything else that needs to be time activated. Can be set up to start using nearly any switch used during a run (ie gear...QM-214300$108.14 -
QM Dual Battery Tray
Quarter-Max
$139.99Don’t let a shifting battery cost you a run or a tech inspection. Our heavy-duty battery tray is designed for high-performance drag racing applications, providing a rock-solid mounting solution that...QM-214114$139.99 -
QM EGT Weld-In Bung
Quarter-Max
$11.22When welded in place, bung provides a place to mount your EGT sensor.QM-219307$11.22 -
QM EGT Weld-In Bung, Stainless Steel
Quarter-Max
$16.54Stainless Steel EGT Weld In Bung.QM-219307-1$16.54 -
QM Emergency Shut Off Button Switch, Push Pull
Quarter-Max
$94.00When seconds count on the track, total electrical shutdown must be instantaneous and fail-safe. The Quarter-Max Large Push-Button Master Switch—widely utilized as an exterior bumper switch or kill...CR-BSO-1$94.00 -
QM HD Delay Timer
Quarter-Max
$167.99The Quarter-Max 12 volt delay timers can be set in .01 - 10 seconds of delay intervals. Commonly used to bring in the 2nd NOS system and to delay the electric shock changes from the gear change. For...QM-214300-2$167.99 -
QM Headlight Contact Wireless Connector
Quarter-Max
$36.74No need to unplug wires this connector makes having headlights in a removable front end easy. These heavy duty solid brass contacts handle up to 60 amps per circuit. Mounts anywhere in the doorjamb...QM-610042$36.74 -
QM Heavy Duty Master Disconnect Kit
Quarter-Max
$160.64This assembly allows all electrical power to be shut off for safety purposes. Features an easy and presentable inside installation. Comes with all hardware necessary, including the Big Switch 250 Amp...QM-214216-1$160.64