Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Shop Oval Track Brakes & Hubs At Speedway Motors

Speedway Motors has the racing brake components you need for the rigors of the oval track. We have top quality rotors, calipers, brackets and hubs, including lightweight wide 5 hubs. Our complete assortment of brake pads will help you tune your brakes to track conditions. Choose from a great selection of master cylinders and pedals, too, as well as the high temp brake fluid you need to keep your brakes performing under the harshest conditions.

"Oval Track, Brake Proportioning Valves" Page 1 of 1

  • AFCO 40217G Crank-Type Bias Adjuster, 30-1/2 Inch
    AFCO 40217G Crank-Type Bias Adjuster, 30-1/2 Inch
    SKU-10640217G
    x
                Steel adjuster is supplied with loose weld-on mount tab, which will allow a custom fit for each application.
            
  • Speedway Purple Proportioning Valve
    Speedway Purple Proportioning Valve
    SKU-91031353
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    Allows easy adjustment of front-to-rear brake bias. Universal design works on all race cars. Has a 100 to 1500 psi range with up to 57 percent pressure reduction.

    Includes two 1/8"-27 NPT to 3/8"-24 inverted flare fittings (not pictured).

    Brake System Builder's Tip (Link) 

  • AFCO 40217 Crank-Type Bias Adjuster, 28 Inch
    AFCO 40217 Crank-Type Bias Adjuster, 28 Inch
    SKU-10640217
    x
                Steel adjuster is supplied with loose weld-on mount tab, which will allow a custom fit for each application.
            
  • Compact Adjustable Proportioning Valve
    Compact Adjustable Proportioning Valve
    SKU-91031357
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    Very compact, can be hidden in cars that do not allow adjustable proportioning valves. Color reference scale on valve stem allows fast, accurate setting. Installs in rear brake line and allows you to adjust front-to-rear brake bias to prevent rear brake lock-up under heavy braking. 

    • Can be used as full shut-off valve
    • Rated to 2000 psi
    • Flows 3 gpm
    • Inlet:  1/8" NPT port
    • Outlet:  1/8" NPT port

    Learn more about how adjustable proportioning valves work by reading our tech article. Brake System Selection.  

  • Wilwood 260-11179 Adjustable Proportioning Block
    Wilwood 260-11179 Adjustable Proportioning Block
    SKU-83526011179
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    This block has the proportioning valve built-in to the rear brake ports and a stop light switch built into the front brake ports. All ports are 3/8"-24 inverted flare female.

    • Compact design simplifies mounting, plumbing, & wiring
    • Maintains full isolation between front and rear fluid circuits
    • Rear circuit has a single inlet and single outlet with the adjustable proportioning valve
    • Front circuit has a single inlet with two outlets

    Proportioning Valve Installation Instructions (PDF)

    Brake System Builder's Tip (Link)

    Detailed Schematic of Proportioning Block 

    Learn more about how adjustable proportioning valves work by reading our tech article. Brake System Selection.   

  • AFCO 40218 Crank-Type Bias Adjuster, 35 Inch
    AFCO 40218 Crank-Type Bias Adjuster, 35 Inch
    SKU-10640218
    x
                Steel adjuster is supplied with loose weld-on mount tab, which will allow a custom fit for each application.
            
  • Garage Sale - Speedway Remote Balance Bar Adjuster
    Garage Sale
    Garage Sale - Speedway Remote Balance Bar Adjuster
    SKU-UP41058
    x
                

    This is garage sale priced because the knob is stiff.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS 

     

    • Highly visible bright purple knob
    • Bi-directional detent control which provides the driver with positive adjustment feedback
    • 5' long, may be shortened
    • For use with Wilwood aluminum brake pedal assemblies

     

  • Wilwood 260-8420 Lever Style Proportioning Valve
    Wilwood 260-8420 Lever Style Proportioning Valve
    SKU-8352608420
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    This proportioning valve has six preset adjustment points actuated by moving a lever allowing racers to adjust brake bias during a race without having to "look" where the knob position is. This lever "clicks" into the six positions for positive adjustment and the bright red lever is easily seen in a busy racing cockpit. Lever can be rotated 180 degrees for easy installation.

    • This ratchet style brake proportioning valve allows quick and accurate adjustment of brake bias
    • Universal design works on all race cars
    • 100 to 1500 psi range, up to 57% pressure reduction
    • It comes with 6 preset positions, has an aluminum body, rapid ratchet, and positive lock
    • Uses 1/8" NPT fittings

    835-2608420 Instructions (PDF)

  • Wilwood 260-8419 Knob Style Proportioning Valve
    Wilwood 260-8419 Knob Style Proportioning Valve
    SKU-8352608419
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    This device lets you adjust the front-to-rear braking balance by proportionally decreasing the rear (or in some cases the front) brake line pressure. Can also be used to adjust individual front wheel braking in dirt track applications. Valve weighs only 5.2 ounces and has two .25" side mounting holes spaced 1.00" apart.

    • Allows easy adjustment of front to rear brake bias
    • Universal design works on all race cars
    • 100 to 1500 psi range, up to 57% pressure reduction
    • Accepts 1/8"-27 NPT fittings

    Compensates for weight transfer to the front wheels during braking. All factory brake systems allow for this in some fashion. An APV allows you to "fine tune" a street or race brake system and thus prevents severe rear brake lockup under moderate-to-heavy braking.

    835-2608419 Instructions (PDF)

  • Speedway Remote Balance Bar Adjuster
    $39.99
    $50.00
    Product Rating: 4.00 Stars
    Speedway Remote Balance Bar Adjuster
    SKU-91631971
    x
                
    • Highly visible bright purple knob
    • Bi-directional detent control which provides the driver with positive adjustment feedback
    • 5' long, may be shortened
    • For use with Wilwood aluminum brake pedal assemblies
  • Speedway Polished Proportioning Valve
    Speedway Polished Proportioning Valve
    SKU-91031354
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    Allows easy adjustment of front-to-rear brake bias. Universal design works on all race cars. Has a 100 to 1500 psi range with up to 57 percent pressure reduction. Includes two 1/8"-27 NPT to 3/8"-24 inverted flare fittings.

    Brake System Builder's Tip (Link)

  • Garage Sale - 10 Inch Brake Bias Adjuster With Pointer
    Garage Sale
    Garage Sale - 10 Inch Brake Bias Adjuster With Pointer
    SKU-91042074.GS
    x
                

    This brake bias adjuster is garage sale priced  because it is missing the cable and mounting hardware.  What you see is what you get.

     NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  

    Know exactly where brake adjustments are set, no more guessing the correct setting. As you turn the adjusting knob, the pointer simply moves along the reference scale. Adjuster body can be pivoted for easy viewing and multiple applications. Record where the pointer is located and use as baseline. Housing, internals, brackets and knob with detent are all made of aluminum.