1 x 2.38" Piston; 1.25" Rotor Width; 5.46" Mount; Cast Aluminum; Universal Mount Loc.
Wilwood’s GM Metric Caliper is a direct replacement for the 1978 and later D154 type GM metric caliper. Weights starting at 2.92 pounds, it provides a substantial weight savings over cast iron OE calipers. Requires use of hardened Wilwood slide pins (sold separately), request part no. 230-0619 (slide pin kit) contains 4 slide pins, enough for two calipers
This competition caliper represents the latest refinements in caliper design and manufacturing through the use of computer 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.
The triple bridge provides higher clamping efficiency through lower deflection over all twin bridge models. All load bearing and stress points are fortified to maximize strength, and all unnecessary material is removed to maximize weight reduction. The results are the strongest, lightest, and most efficient aluminum caliper in its class.
| Part Information | |
|---|---|
| Brand | Wilwood |
| Part No | 120-6427 |
| UPC | 889545004595 |
| Common Applications | GM Metric, Stock, Modifieds |
| Pistons | |
| Piston Count | 1 |
| Piston Area (in2) | 4.45 |
| Piston Type | Stainless |
| Dust Boot | No |
| Rotor Dimensions | |
| Rotor Width (in) | 1.25 |
| Rotor Diameter (in) | 11.75 |
| Pad Dimensions | |
| Pad Area (in2) | 8.7 |
| Pad Volume (in3) | 2.9 |
| Wilwood Pad Style | D154 |
| Material | |
|---|---|
| Material | Cast Aluminum |
| Weight (Lbs) | 3.4 |
| Color & Finish | |
| Color | Clear |
| Finish | Clear Anodize |
| Mounting | |
| Mount Center (in) | 5.46 |
| Mount Side | Universal |
| Mount Type | Floating |
| Inlet Thread | 1/8-27 NPT |
© 2025 Day Motor Sports
All Rights Reserved
Website by GroupM7 Design™
6100 US Highway 69 N
Tyler, Texas 75706
M-Th: 8:30 am - 5:30 pm (CT)
Fri: 8:30 am - 3:00 pm (CT)
Sat-Sun: Closed
