W4A Caliper – Part No: 120-10904-LRD
Call (805) 388-1188
W4A Radial Mount
Prod #: 120-10904-LRD
Price: $680.34

W4A Radial Mount - Product Summary
Caliper No: 120-10904-LRD
Image Coming Soon

Pistons
Piston Count 4
Piston Area (in²) 2.46
Piston Type Stainless
Dust Boot No
Rotor Dimensions
Rotor Width (in) 1.10
Rotor Diameter(in) 14.25
Pad Dimensions
Pad Area (in²) 11.1
Pad Volume (in³) 5.2
Duty Rating & Material
Material Forged Aluminium
Weight(Lbs) 7.6
Colors & Finish
Color Red
Finish Red Powder Coat

Mounting
Mount Center(in) 7.09
Mount Position
Mount Side Left Hand
Mount Type Radial
Product Documents
Product Data Sheet

Click To Download
Installation Instructions




WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov
Applicable to Brake Pads Only

120-10904-LRD - Product Description

W4A Radial Mount

The W4A forged four piston caliper delivers heavy duty stopping power for the road or track. The caliper incorporates race technology into a body design with widespread adaptability. Radial mounting, two options for piston volume, and a rotor diameter ra

The W4A body is the product of FEA computer design and stress flow forging technology. FEA technology allows the designer to test the prototype in a computer environment to determine the optimal structural design within the dimensional parameters of the

This caliper generates big brake clamping force with four differential bore stainless steel pistons. Stainless steel is used for its high resistance to corrosion and low thermal conductivity that reduces the heat transfer from the pads. The differential b



Product Specifications

Rotor Compatibility
Rotor Width (in) 1.10
Maximum Rotor Width (in) 1.10
Minimum Rotor Width (in) 1.00
Maximum Rotor Diameter(in) 14.25
Minimum Rotor Diameter(in) 12.19

Brake Pad Specifications
Brake Pad Type 1 6617
Brake Pad Type 2 N-A
Brake Pad Type 3 N-A
Total Pad Area (in²) 11.1
Total Pad Volume (in³) 5.2
Mount
Piston Specifications
Piston 1 Bore (in) 1.25
Piston 2 Bore (in) 1.25
Piston 3 Bore (in)
Total Piston Area (in²) 2.46

Mounting Specifications
Mount Type Radial
Mount Side Left Hand
Mount Center(in) 7.09
Mount Hole Size(in) 0.45
Mount Height(in) 2.09
Inlet Thread Size 1/8-27 NPT
Pad Dimensions & Part Numbers
Pad Dimensions for the W4A Radial Mount Pad Dimensions for the W4A Radial Mount Zoom Image
Axle Set P/N
Pad Type
Compound
Non-Bedded Pads - by Compounds
150-9488K
6617
BP-10
150-20-6617K
6617
BP-20
150-22-6617K
6617
BP-22
150-28-6617K
6617
BP-28
150-30-6617K
6617
BP-30
150-35-6617K
6617
BP-35
150-40-6617K
6617
BP-40
150-45-6617K
6617
BP-45
150-Q-6617K
6617
BP-Q
150-15193K
6617
PCM
15A-9977K
6617
PolyMatrix A
150-TX1-6617K
6617
TX1
Mount Dimensions & Part Numbers

Dimensions for the W4A Radial Mount Dimensions for the W4A Radial Mount Zoom Image

Additional Notes

The performance of the W4A is enhanced with SRS bridge plates, snap-ring locked pad retainer pins, recessed two-piece bleed screw assemblies and dampen mounted fluid transfer tubes. SRS bridge plates eliminate all bridge wear caused by pad gouging. The sp

Radial mount adapter brackets are used in Wilwood brake kits to provide a secure and precise method of attaching the WW4A caliper to the factory mount bosses on the original spindle.


Parts & Accessories

O-Ring Kit 130-2479
Replacement Dust Boot N-A
Replacement Piston 1 200-7514
Replacement Piston 2 200-7514
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 300-5876
Wear Plate R/H 300-5876
Pad Retainer 180-9874
Bleed Screw Kit 220-6069
Self Bleeder Tube N-A
Cross-Over Tube 190-11508

Additional related products:




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Version: 3.05 June 23, 2023