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Key Specs

MFG. Part #120-6427
Caliper PistonsOne
Piston Diameter2.38"
Rotor Thickness1.25"
Material TypeAluminum

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Details

Wilwoods GM Metric Caliper is a direct replacement for the 1978 and later D154 type GM metric caliper. Weighs starting at 2.92 pounds, it provides a substantial weight savings over cast iron OE calipers. This competition caliper represents that latest refinements in a caliper design and manufacturing through the use of comuputer based FEA solid modeling and stress simulation programs. The real strength of this caliper comes from its triple bridge configuration, and its lightness is a result of efficient design.

  • Casting using a tight grained, high density aircraft alloy
  • All load bering and stress points are fortified to maximize strength
  • All unnecessary material is removed to maximize weight reduction
  • Stainless pistons provide improved fluid protection with high resistance to corrosion and low heat transfer
  • Each is fully machined, assembled with a high temperature seals, and tested-in house at Wilwood
  • Completely interchangeable w/ stock GM caliper (racing only)
  • 11" to 13" diameter, 1.25" thick rotors
  • 3.7 lbs.

GM Racing Brake Caliper Dimensions (PDF)

Item Details

2.38" Piston/1.25 Rotor

Specs


Specifications

KEY SPECS
MFG. Part #120-6427
BrandWilwood
Caliper PistonsOne
Piston Diameter2.38"
Rotor Thickness1.25"
Material TypeAluminum
GENERAL
FinishAnodized
Rotor Diameter11.75 Inch
Mounting SideUniversal
Bore Size2.38"
Caliper Mounting TypeFloating
ColorGray
Centerline of Holes5.46"
Overall Length6.71"
Thread Pitch1/8-27 NPT
Total Piston Area4.45 sq. in.
Mount Hole Size0.69"
Mounted Height0.48"
Pad Area8.70 sq. in.
Pad Volume2.90 cu. in.
GTIN Code889545004595
Sold in QuantityEach