D154 Single and Dual Piston Floater Caliper – Part No: 120-11870-RD
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D154 Single & Dual Piston Floater
Prod #: 120-11870-RD
Price: $211.00
D154 Single & Dual Piston Floater - Product Summary
Caliper No: 120-11870-RD
D154 Single & Dual Piston Floater

Piston Count 1
Piston Area (in²) 4.90
Piston Type Stainless
Dust Boot No
Rotor Dimensions
Rotor Width (in) 1.04
Rotor Diameter(in) 12.19
Pad Dimensions
Pad Area (in²) 8.7
Pad Volume (in³) 2.9
Duty Rating & Material
Material Forged Aluminium
Weight(Lbs) 4.6
Colors & Finish
Color Red
Finish Red Powder Coat

Mount Center(in) 5.46
Mount Position
Mount Side Universal
Mount Type Floating
UPC Number
UPC 889545002386
Product Documents
Product Data Sheet

Click To Download
Installation Instructions

WARNING: Cancer and Reproductive Harm
Applicable to Brake Pads Only

120-11870-RD - Product Description

D154 Single & Dual Piston Floater

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.

There are three piston configurations available for the D154: A large 2.50" single piston, and two two-piston models featuring 1.62/1.62" or 1.12/1.12" pistons. All three calipers utilize stainless steel pistons. Stainless pistons are used to resist corrosion and retard heat transfer from the pads into the caliper body. High temperature, square faced bore seals are used to provide controlled piston retraction and reliable performance from the wider sealing face. This combination of components is a proven performer with long service life and a history of reliable performance in any type of driving environment, including extreme sustained high temperature racing applications. The caliper slide pin holes are fitted with dampening rings to minimize noise from vibration. The caliper is also fitted with bleed screws on both ends to facilitate mounting in any left hand or right hand, front leading mount, or rear trailing mount locations.

Product Specifications

Rotor Compatibility
Rotor Width (in) 1.04
Maximum Rotor Width (in) 1.04
Minimum Rotor Width (in) 0.87
Maximum Rotor Diameter(in) 12.19
Minimum Rotor Diameter(in) 11.00

Brake Pad Specifications
Brake Pad Type 1 D154
Brake Pad Type 2 N-A
Brake Pad Type 3 N-A
Total Pad Area (in²) 8.7
Total Pad Volume (in³) 2.9
Piston Specifications
Piston 1 Bore (in) 2.50
Piston 2 Bore (in)
Piston 3 Bore (in)
Total Piston Area (in²) 4.90

Mounting Specifications
Mount Type Floating
Mount Side Universal
Mount Center(in) 5.46
Mount Hole Size(in) 0.69
Mount Height(in) 0.37
Inlet Thread Size M10 x 1.50
Pad Dimensions & Part Numbers
Pad Dimensions for the D154 Single & Dual Piston Floater Pad Dimensions for the D154 Single & Dual Piston Floater Zoom Image
Axle Set P/N
Pad Type
Non-Bedded Pads - by Compounds
PolyMatrix A
Mount Dimensions & Part Numbers

Dimensions for the D154 Single & Dual Piston Floater Dimensions for the D154 Single & Dual Piston Floater Zoom Image

Additional Notes

Parts & Accessories

O-Ring Kit 130-12084
Replacement Dust Boot N-A
Replacement Piston 1 200-11793
Replacement Piston 2 N-A
Replacement Piston 3 N-A
Replacement Piston 4 N-A
Cross-Over O-Ring Kit N-A
Bridge Bolt Kit N-A
Wear Plate L/H N-A
Wear Plate R/H N-A
Pad Retainer N-A
Bleed Screw Kit 220-0627
Self Bleeder Tube N-A
Cross-Over Tube N-A
Products commonly used with this item:

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Wilwood makes every effort to maintain our web site to ensure the accuracy of prices and product information. However, product information and prices are subject to change without notice. Please call (805) 388-1188 before ordering to verify current prices and product information.
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Version: 3.05 June 23, 2023