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Product Summary

Universal Fit, Steel, 0.188" Tube O.D.

  • Build a reliable 3/16" brake line system for any domestic, European, Japanese, or British vehicle at a reasonable price
  • Hard brake lines are made from low-carbon steel, double-walled with a copper-brazed bond and meet or exceed SAE standards
  • A generous amount of brake line plumbs your street rod, muscle car, race car, or pickup truck. Includes a 25-foot roll of steel brake line, and six 60" steel straight brake lines
  • Setting the brake balance is easy with an included Wilwood adjustable proportioning block
  • Make any brake system build easy and economical with the Speedway Motors Universal Brake System Builder Kit

Comes as a Kit

Key Specs

MFG. Part #6178570
BrandSpeedway Motors
Material TypeSteel
Tube O.D.0.188"
Thread Pitch3/8"-24 IFM

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Details

Reliable Brakes at a Great Price

Build a reliable 3/16” brake line system for any domestic, European, Japanese or British vehicle at a reasonable price. We applied our decades of experience to select quality components including all the hard line, valves and fittings you’ll need to complete the job. Just add your flex lines and brakes. 

Double-Walled, Easily-Workable Brake Line

Hard brake lines are made from low-carbon steel, double-walled with a copper-brazed bond and meet or exceed SAE standards. The brake lines have a 3,400 psi working pressure rating and a high tensile strength to resist vibration and fatigue. You can bend this line with hand tools to make smooth bends around nearly any chassis, and it works with 45° double (inverted) flare or 37° AN single flare fittings. 

Plenty of Brake Line and Hardware

A generous amount of brake line plumbs your street rod, muscle car, race car, or pickup truck. A 25-foot roll of 3/16” steel brake line and six, 60” steel straight brake lines are included. Pre-flared straight lines come with 3/8”-24 inverted flare nuts installed. Master cylinder steel dual brake lines come with the kit, pre-bent at 90° at the master cylinder end and pre-flared with 3/8”-24 inverted flare nuts installed. Included line clamps and tabs can be mounted anywhere on the frame using self-tapping screws, bolts, rivets, etc.

Easy, Reliable Brake Setup

Setting the brake balance is easy with an included Wilwood adjustable proportioning block. The compact aluminum block is conveniently labeled for easy installation, and has a brake light switch with wire pigtails. All ports are standard 3/8”-24 inverted flare female for easy attachment with standard brake lines. Residual valves are included to maintain pressure in the line. Two, 2 psi and one 10 psi polished aluminum residual valves are included. Residual valves keep pressure in the brake system and prevent brake fluid from gravity feeding back to the master cylinder, maintaining a high and firm brake pedal. 

Make any brake system build easy and economical with the Speedway Motors Universal Brake System Builder Kit.  

Features

  • All-in-one kit for building 3/16” domestic, European, Japanese and British brake lines.
  • Includes hard lines, adapters and fittings to plumb nearly any brake system from street rod, muscle car, race car or pickup.
  • Use with disc/disc or disc/drum systems, manual or power brakes.
  • Hard lines are made of low-carbon steel, zinc plated, and easily workable.
  • Double walled brake line with a copper brazed bond meets or exceeds SAE standards and resists vibration and fatigue.
    • Includes 25-foot roll of 3/16” O.D. steel brake line, 0.028” wall thickness
    • Includes six, 60” steel straight lines, pre-flared with 3/8”-24 inverted flare nuts installed
    • High tensile steel  has a 3,400 psi working pressure rating, 12,559 psi burst rating and tensile strength of 42,050 psi
  • Wilwood adjustable proportioning block is included to make setup simple. 
    • Compact anodized aluminum block features built-in proportioning valve for rear brakes
    • Integrated brake light switch on front port
    • Includes wire pigtails for brake light switch, ready to splice into your wiring harness
    • Standard 3/8”-24 inverted flare female ports for easy attachment with standard brake lines, and included kit fittings
    • Rear circuit has single inlet and single outlet with adjustable valve
    • Front circuit has single inlet and dual outlets
    • All-in-one labeled proportioning block makes plumbing brakes easy
  • Polished aluminum residual valves included to maintain brake line pressure for a high and firm pedal
    • (2) 2 psi valves (for disc brakes) 
    • (1) 10 psi valve (for drum brakes)
  • Kit comes with 10 rubber coated insulated line clamps to hold brake line securely in place without wearing down outside of line. 
  • Line clamps can be affixed to the frame using self-tapping screws, bolts, rivets, etc.
  • Enough adapters to fit residual valves and rear axle brass Tee fitting:
    • (6) 1/8” NPT to 3/8”-24 straight and (2) 90-degree adapters for proportioning valves and rear brakes
    • (5) 3/8” IFF tube nuts to use 25’ roll from proportioning valve back, and from valve forward
    • (2) 3/8”-24 IFF unions to work with straight brake lines included in kit
    • (1) 3/8”-24 to AN 3 fitting to lock into frame tab and allow use of AN 3 flex line down to rear axle Tee fitting
    • (1) 1/8” NPT to AN 3 fitting for rear axle Tee to accept AN 3 flex line
  • Kit also comes with two sets of removable brake line tabs.
    • First set features .63” ID round hole, and two 3/16” mounting holes; comes as a pair
    • Second set features .68” ID hole with unique star-style shape similar to OEM brake tabs; fits many OEM hoses from ’69-‘88 GM calipers; uses a single 3/16” mounting hole; comes as a pair

Learn more about the proper uses of residual valves by reading our tech article. Brake System Selection

Learn more about flaring lines for our automotive fittings by reading our tech article. The Principles of Automotive Fittings

Learn how to flare a brake line with a flaring tool by reading our tech article. How to Flare a Brake Line With a Flaring Tool

Charts

Specifications

KEY SPECS
MFG. Part #6178570
BrandSpeedway Motors
Material TypeSteel
Tube O.D.0.188"
Thread Pitch3/8"-24 IFM
GENERAL
Sold in QuantityKit
NotesIncludes proportioning valve, residual valves, adapters, steel brake lines, tabs, and clips.