D154 Single & Dual Piston Floater
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Wilwood D154 Single & Dual Piston Floater Caliper

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D154 Single & Dual Piston Floater Caliper
Wilwood's D154 forged billet caliper is a direct bolt-on, lightweight, high-strength, extreme duty alternative to the OE cast iron calipers that were used on a wide range of factory disc brake equipped mid size GM cars and small trucks beginning in 1978. Use of this caliper can still be found on some GM models as late as the year 2002. The wide spread and affordable availability of D154 calipers and brake pad compounds also made it a popular choice in a number of restricted class competition categories and drum to disc conversions on all types of hot rods and street machines.
View D154 Single and Dual Piston Floater Calipers
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Caliper Dimensions
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Piston Count: |
Piston Area Range (in²): |
Pad Area Range (in²): |
1
, 2 |
1.98
- 4.90 |
8.7 |
Pad Volume Range (in³): |
Max Rotor Widths (in): |
Max Rotor Diameters (in): |
2.9 |
1.04 |
12.19 |
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D154-R Single Piston Floater
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Wilwood D154-R Single Piston Floater Caliper

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D154-R Single Piston Floater Caliper
Wilwood's newest race caliper, the D154-R starts with a forged aluminum black anodized body with stainless steel piston. With a choice of 2.50” or 2.00” pistons and covering rotors from .81” to 1.04” thickness up to 12.19” diameter. Caliper fluid inlet port centered directly behind the piston eliminates any interference with slide pins. Lower deflection rate and higher volumetric efficiency than all the competitions’ heavier cast models, D154-R calipers with a 2.50" piston weighs only 3.3 pounds and use standard metric D154 pads. Caliper mounting uses stock height and offset.
View D154-R Single Piston Floater Calipers
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Caliper Dimensions
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Piston Count: |
Piston Area Range (in²): |
Pad Area Range (in²): |
1 |
3.14 |
8.7 |
Pad Volume Range (in³): |
Max Rotor Widths (in): |
Max Rotor Diameters (in): |
2.9 |
1.04 |
12.19 |
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D154-R Single Piston Floater
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Wilwood D154-R Single Piston Floater Caliper
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D154-R Single Piston Floater Caliper
Wilwood's newest race caliper, the D154-R starts with a forged aluminum black anodized body with stainless steel piston. With a choice of 2.50” or 2.00” pistons and covering rotors from .81” to 1.04” thickness up to 12.19” diameter. Caliper fluid inlet port centered directly behind the piston eliminates any interference with slide pins. Lower deflection rate and higher volumetric efficiency than all the competitions’ heavier cast models, D154-R calipers with a 2.50" piston weighs only 3.3 pounds and use standard metric D154 pads. Caliper mounting uses stock height and offset.
View D154-R Single Piston Floater Calipers
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Caliper Dimensions
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Piston Count: |
Piston Area Range (in²): |
Pad Area Range (in²): |
1 |
3.14
- 4.90 |
8.7 |
Pad Volume Range (in³): |
Max Rotor Widths (in): |
Max Rotor Diameters (in): |
2.9 |
1.04 |
12.19 |
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GM-Metric Single Piston Floater
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Wilwood GM-Metric Single Piston Floater Caliper

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GM-Metric Single Piston Floater Caliper
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
View GM Single Piston Calipers
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Caliper Dimensions
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Piston Count: |
Piston Area Range (in²): |
Pad Area Range (in²): |
1 |
4.45 |
8.7 |
Pad Volume Range (in³): |
Max Rotor Widths (in): |
Max Rotor Diameters (in): |
2.9 |
1.25 |
11.75 |
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GM-Metric-Iron Single Piston Floater
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Wilwood GM-Metric-Iron Single Piston Floater Caliper

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GM-Metric-Iron Single Piston Floater Caliper
These all new cast, not rebuilt iron calipers are bolt-on replacements for 1978 and later GM Metric calipers widely used in "spec" racing categories and low cost disc brake conversions. 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
View GM Single Piston Calipers
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Caliper Dimensions
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Piston Count: |
Piston Area Range (in²): |
Pad Area Range (in²): |
1 |
3.14
- 5.94 |
8.7 |
Pad Volume Range (in³): |
Max Rotor Widths (in): |
Max Rotor Diameters (in): |
2.9 |
1.04 |
11.75 |
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