Product Summary

Front Position, 5 on 4.75" Bolt Pattern, Natural

  • Our 11" drilled and slotted rotors disc brake conversion kit makes it easy to convert your old drum brake setup to disc brakes on GM full size cars
  • This full size disc brake conversion kit won't require you to swap out spindles, saving you time and money
  • Comes with 11" cast iron forged rotors (5 on 4.75" BP), loaded GM calipers, rubber brake lines, and all required hardware, seals, and bearings
  • Fits 1958 full Size Chevy B-body (Impala, Bel Air, Biscayne) with 14" or larger wheels and will increase track width by 1-3/4" (7/8" per side)
  • Includes detailed instructions for a easy installation

Comes as a Kit

Key Specs

Bolt Pattern5 on 4.75"
Rotor Diameter11 Inch
Rotor TypeVented
Caliper PistonsOne

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Bringing economy to performance, this brake kit offers drilled and slotted rotors for a $25 upgrade over our standard kits. These kits allow you to mount front disc brakes on your 1958 Chevy full-size car. Front disc brakes provide a significant improvement in braking performance versus the drum brakes your old Chevy came with. This disc brake kit works with stock, drum brake spindles only - it does not work with 2" drop spindles. Kit will work with 14" wheels intended for disc brake applications, as well as most 15" (or larger) wheels.

  • Greatly improves braking performance
  • Simple, bolt-on kit - no custom fabrication necessary
  • Complete kit - no need to chase down all the small bits and pieces for a full install
  • Great safety upgrade for your 1958 Chevy full size!

Rotors are 11" diameter with 5 on 4-3/4" bolt pattern and calipers have 7/16"-20 inlets. This kit will increase track width 7/8" per side or 1-3/4" total when installed. 

  • 11" Rotors
  • 5 on 4-3/4" - bolt pattern
  • Metric calipers
  • Calipers mount behind axle (rearward)
  • Will work with 14" & larger wheels intended for use with disc brakes
  • Bearings, pads, brackets included
  • Seals and hoses
  • Hardware included
  • Increases trac-width 7/8" per side


BrandSpeedway Motors
Bolt Pattern5 on 4.75"
Rotor Diameter11 Inch
Rotor TypeVented
Caliper PistonsOne
Caliper FinishNatural
Parking Brake ProvisionNo
Hardware IncludedYes
Rotor StyleDrilled & Slotted
Front Rotor IncludedYes
Front Caliper IncludedYes
Rotor Thickness1.05"
Stud Diameter0.44"
Stud Length0.80"
Track Width Increase1.75"
Sold in QuantityKit