Chassis & Suspension
Shop Quarter-Max for the industry's best drag racing chassis and suspension components. We manufacture and stock everything you need to build or upgrade your race car, including 4-link suspensions, anti-roll bars, coilover shocks, drag struts, rod ends, and weld-on chassis brackets. Whether you are building a Pro Mod or a bracket car, our proven suspension parts are designed to help you hook hard and put the power to the ground.
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4-Links & Components
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Anti-Roll Bars
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Back-Halfs
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Ballast & Weight Bars
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Bottle Mounts & Billet Clamps
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Brackets, Gussets & Tabs
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Drag Race Chassis Kits
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Engine Mounting
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Ladder Bars & Components
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Rear End Housings & Components
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Street Chassis & Front Clips
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Struts & Components
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Shocks, Springs & Accessories
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Wheelie Bars & Components
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Wishbones & Diagonal Links
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QM Rear End Housing Vent Baffle
Quarter-Max
$15.74This vent baffle prevents oil from splashing on the housing vent, while still allowing air to flow to the vent.QM-0246$15.74 -
QM Rear End Housing Wishbone Mount
Quarter-Max
$9.44This laser cut bracket is used to mount wishbone to the housing must be bent in the desired area.QM-410071$9.44 -
QM Rear End Housing Wishbone Mount Support Gusset
Quarter-Max
$13.64Wishbone mount Material 0.125" 4130.QM-410028$13.64 -
QM Rear Shock Gusset
Quarter-Max
$5.24Rear Shock Gusset is made of 0.090" thick 4130 chromoly.QM-410159$5.24 -
QM S.S. Brake Bracket
Quarter-Max
$5.24SS brake bracket Material 0.090" 4130 Hole size 0.190"QM-410294$5.24 -
QM SBC Motorplate
Quarter-Max
$203.69SBC Motorplate • Made of 6061-T6 1/4" aluminum• 40" overall lengthQM-213101$203.69 -
QM SBC Motorplate - Bent for BBC Mounts
Quarter-Max
$358.04SBC Motorplate - Profiled and Bent for BBC Mounts Made of 6061-T6 1/4" aluminum. Overall width: 38-13/16"QM-213104$358.04 -
QM Seat Belt Mount Tab
Quarter-Max
$5.76Fabricate strong and safe seat belt mounting points with this .187" thick 4130 chromoly tab. Precision .440" hole for secure harness attachment. Material .187" 4130 Hole size .440"QM-410066$5.76 -
QM Seat Belt Mount Tab, 4130, .125" Thick
Quarter-Max
$6.29Weld-in seat belt mounting tabs made from durable .125" 4130 chromoly with a 7/16" hole. Can be used for creating a double shear mounting point for your safety harness. Specifications: • Material: ...QM-411194$6.29 -
QM Seat Belt Universal Tab, 4130, .125" Thick
Quarter-Max
$6.29Upgrade your safety and fabrication with our Universal Weld-In Seat Belt Tab. Designed for uncompromising strength and versatility, this tab is perfect for creating custom harness anchors or general...QM-2178209$6.29 -
QM Sensor Tab
Quarter-Max
$4.19Strut mount shock sensor tab. Material 16 gauge Mild Steel .180" HOLE ID 1.130" BASE WIDTHQM-410723$4.19 -
QM Shift Light Bracket
Quarter-Max
$5.24Mount your shift light with this bracket 0.050" thick 4130 Hole size .0750"QM-410332$5.24 -
QM Shock Canister Mount, Bolt-on
Quarter-Max
$102.89Secure your remote shock reservoirs with this rugged, heavy-duty bolt-on canister mount. Built for off-road enthusiasts and high-performance custom builds, this mounting kit ensures your shock...QM-219531$102.89 -
$110.24 -
QM Shock Inflation Unit
Quarter-Max
$62.99Add nitrogen to your Penske shocks with this unit. Comes with CaseQM-214308-1$62.99 -
QM Shock Mounting Jig
Quarter-Max
$18.89This Shock Mounting Jig is made of 1/4" 6061-T6 aluminum. It has 1/2" holes with 3 mounting locations: 13-3/4", 14-3/4", and 15-3/4".Sold each.QM-430075$18.89 -
QM Shock Packers
Quarter-Max
$41.90This new item is used to limit travel on your shocks. This design allows the Packer to slip over the shock shaft and it will stay in place. You can stack as many Packers as you need on top of each...QM-410779$41.90 -
QM Shock Pressure Gauge
Quarter-Max
$174.29This handy gauge is used to check the pressure in your Penske shocks. Can also be used to accurately fill the shocks.QM-214308$174.29 -
QM Shock Sensor Bracket
Quarter-Max
$16.79Weld this bracket to your rear end housing to mount your shock sensor.Specifications:• Material: SteelQM-410113$16.79 -
QM Shock Sensor Tab, 4130
Quarter-Max
$6.29Precisely engineered for racing applications, this Front Shock Sensor Tab provides a secure, reliable mounting point for your shock travel sensor. Crafted from 4130, this tab is commonly welded to...QM-411256$6.29 -
QM Single Hole Tab, 4130, .130" Hole (Pack of 10)
Quarter-Max
$12.50This versatile single-hole mounting tab is crafted from high-strength .050" 4130, known for its excellent durability and weldability. Featuring a .130" pre-drilled hole, this tab is ideal for a wide...QM-411178$12.50 -
QM Single Hole Tab, 4130, .190" Hole (Pack of 10)
Quarter-Max
$12.50This versatile single-hole mounting tab is crafted from high-strength .050" 4130, known for its excellent durability and weldability. Featuring a .190" pre-drilled hole, this tab is ideal for a wide...QM-411179$12.50 -
QM Slim-Line Wheel Bearing Hub, Narrow, 1-1/4"
Quarter-Max
$15.74Slim-line wheel bearing hub for 1-1/4" wide wheelie bar wheel housings.QM-420433$15.74 -
QM Slim-Line Wheel Bearing Hub, Standard, 1-5/8"
Quarter-Max
$15.74Slim-line wheel bearing hub for 1-5/8" wide wheelie bar wheel housings.QM-420433-1$15.74 -
QM Slim-Line Wheelie Bar Wheel Housing Kit, Titanium
Quarter-Max
$159.99This kit allows you to build your own wheel housing without requiring the use of a jig in order to weld the housing together. This saves time and money by eliminating the need for a dedicated fixture...QM-201204-2T$159.99 -
QM Slim-Line Wheelie Bar Wheel, 6-Spoke
Quarter-Max
$199.48Our innovative QM Slim-Line Wheelie Bar Wheels are made of high strength polyurethane and feature widths of 1-1/4" or 1-5/8" at the hubs, and a slim tread width 1/2". The combination of slim tread...QM-219707-4 | QM-219707-6$199.48 -
QM Slim-Line Wheelie Bar Wheel, 8-Hole
Quarter-Max
$199.48Our innovative QM Slim-Line Wheelie Bar Wheels are made of high strength polyurethane and feature widths of 1-1/4" or 1-5/8" at the hubs, and a slim tread width 1/2". The combination of slim tread...QM-219707-5 | QM-219707-7$199.48 -
QM Slim-Line Wide Wheelie Bar Wheels, 6-Spoke, 1-1/4 in. Hub Width
Quarter-Max
$267.74Slim-Line Wide Wheelie Bar Wheels, 6-Spoke, 1-1/4 in. Hub Width Specifications:• Material: Polyurethane• Style: 6-spoke• Available hub widths: 1-1/4" Sold as a pair.QM-219709$267.74 -
QM Slim-Line Wide Wheelie Bar Wheels, 8-Hole, 1-1/4 in. Hub Width
Quarter-Max
$199.48Slim-Line Wide Wheelie Bar Wheels, 8-Spoke, 1-1/4 in. Hub Width Specifications:• Material: Polyurethane• Style: 8-Hole• Available hub widths: 1-1/4" Sold as a pair.QM-219707-3$199.48 -
$8.39 -
QM Small Roof Mount
Quarter-Max
$13.64This versatile water-jetted bracket offers a robust solution for mounting a body to a chassis. Constructed from high-strength 4130 chromoly steel, this 5.5"x2" bracket provides exceptional durability...QM-411166$13.64 -
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 Spanner Wrench, 180 Degree, Plated
Quarter-Max
$24.14This 180 degree spanner wrench is specifically designed for the springs on coil over shocks. Eliminate the old hammer/screwdriver technique with this wrench. Plated.QM-410018$24.14 -
QM Spring Spacers
Quarter-Max
$56.69Use these 1” spring spacers to give your car a lift. For 2-1/2” I.D. springs. Sold as a pair.QM-201213$56.69 -
$13.64 -
$4.19 -
QM Standard Wheelie Bar Welded Wheel Housing, 4130
Quarter-Max
$69.99This Standard Wheelie Bar Welded Wheel Housing is fixture welded and is the perfect start for those who want to build their own wheelie bars. Kit includes qty-1 1/2” X 1” stainless steel pin, qty-1...QM-201204-1$69.99 -
QM Standard Wheelie Bar Wheel Housing Kit, 4130
Quarter-Max
$49.99Standard Wheelie Bar Wheel Housing Kit Specifications:• Bracket material: 4130• Wheel housing width: 1-5/8"This wheelie bar wheel housing fits our standard wheelie bar wheels. It can also be fit...QM-201204$49.99 -
QM Standard Wheelie Bar Wheel Housing Kit, Titanium
Quarter-Max
$159.99Standard Wheelie Bar Wheel Housing Kit Specifications:• Bracket material: Titanium• Wheel housing width: 1-5/8"This wheelie bar wheel housing fits our standard wheelie bar wheels. It can also be fit...QM-201204-T$159.99 -
QM Strange 11" Modular 4-Link Housing Brackets with Doublers, Welded, Titanium
Quarter-Max
$4,759.00Manufactured in-house to the highest quality standards, Quarter-Max's Extreme Pro Series 4-Link Housing Brackets feature precisely machined hole locations and exceptionally smooth profiles. Designed...QM-201216$4,759.00