Product Summary

Front Position, 12.19 Inch Rotor Diameter, Natural

  • Specifically designed for use with 1963–87 GM C10/C15 LevelSet™ Spindles (91039305-5, 91039306-5) and Wilwood Pro Spindles (831-14201, 831-14202).
  • HP rotors are close tolerance machined with smooth turned pad faces - additional mass of the HP series extends service life
  • Slider bolts, brackets, and mounting hardware included
  • 7/16"-20 fluid inlet size allows for use with a variety of adapters or banjo fittings
  • Low metallic compound is perfect for street vehicles looking for additional stopping power
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Key Specs

MFG. Part #91032001
PositionFront
Wheel Bolt Pattern (in.)5x4.75 in. | 5x5 in.
Wheel Bolt Pattern (mm)5x114.3 mm | 5x120.65 mm
Rotor Diameter12.19 Inch
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Speedway Motors 91032001 Details

Upgrade your modified spindle C10 stopping power with this disc brake kit from Speedway Motors.

  • Specially designed for use with 1963-87 GM Pickup modified spindles - not for stock spindles
  • Recommended for use with LevelSet™ Spindles (91039305-5, 91039306-5) and Wilwood Pro Spindles (831-14201, 831-14202).
  • Complete kit includes rotors, calipers, pads, mounting brackets and hardware
  • Bolt pattern is determined by the spindle: 5 x 5" for LevelSet™ 1963–87 C10 drop spindles; 5 x 4.75" or 5 x 5.00" for Wilwood 831-14201 and 831-14202 Pro Spindles.

 

Rotors

  • HP rotors are close tolerance machined with smooth turned pad faces
  • The additional mass of the HP series extends service life on heavier competition vehicles and other severe duty applications
  • The base model for every day use
  • The rotor is drilled to fit 5 x 4.5", 5 x 4.75", and 5 x 5" bolt circle patterns, but the actual bolt pattern is determined by the spindle: 5 x 5" for LevelSet™ 1963–87 C10 drop spindles, and 5 x 4.75" or 5 x 5.00" for Wilwood Pro Spindles.

 

Calipers

  • 2.375" single piston
  • Shielded bottom inlet
  • No core charge required
  • 7/16"-20 inlet
  • 5-1/2" Mount Spacing
  • Can be used with brake hoses from Pre-1978 GM intermediate cars
  • Utilizes GM metric style D154 brake pads

 

Brake Pads

  • Features a low metallic compound for long life and excellent street performance

Learn how to properly Bed-In your brake pads by reading our tech article.  Bedding-In Brake Pad Procedure.

 

Speedway Motors 91032001 Specifications

KEY SPECS
MFG. Part #91032001
BrandSpeedway Motors
PositionFront
Wheel Bolt Pattern (in.)5x4.75 in. | 5x5 in.
Wheel Bolt Pattern (mm)5x114.3 mm | 5x120.65 mm
Rotor Diameter12.19 Inch
Rotor TypeVented
Caliper PistonsOne
Caliper FinishNatural
Parking Brake ProvisionNo
Minimum Recommended Wheel Diameter15 Inch
Rotor ShapeRound
Hardware IncludedYes
Rotor StylePlain Face
Spindle TypeChevy
Front Rotor IncludedYes
Front Rotor Diameter12.19 Inch
Front Caliper IncludedYes
Rear Caliper IncludedNo
Front Spindles IncludedNo
Master Cylinder IncludedNo
Brake Booster IncludedNo
Brake Hoses IncludedNo
Rear Rotor IncludedNo
ColorNatural
Front Caliper FinishNatural
Bolt Pattern5 on 4.5" | 4.75"
Front Caliper Piston Quantity1
GENERAL
Sold in QuantityKit
NotesPads are bonded construction.
Bore Size2.38"
Rotor Thickness0.81"
Stud Diameter0.52"
Offset1.91"
Rotor FinishPlain
Rotor Material TypeCast Iron
Vane Count32 Straight Vane
Hat FinishNatural

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