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Wilwood 120-11657-RSN W6A Radial Mount ST RH Caliper, Nickel
Wilwood 120-11657-RSN W6A Radial Mount ST RH Caliper, Nickel

Wilwood 120-11657-RSN W6A Radial Mount ST RH Caliper, Nickel

Universal Fit, Six Caliper Pistons, 1.25" Rotor Thickness, Aluminum, Nickel, 1.62" Bore Size

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Wilwood 120-11657-RSN W6A Radial Mount ST RH Caliper, Nickel
Wilwood 120-11657-RSN W6A Radial Mount ST RH Caliper, Nickel
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We estimate this item will ship on or before December 18th.
Part # 83512011657RSN
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 2 business days for Wilwood to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.


Caliper Pistons:
Rotor Thickness:
Material Type:
Bore Size:
Centerline of Holes:
Thread Pitch:
1/8-27 NPT
Rotor Diameter:
15 Inch
Caliper Mounting Type:
Mounting Side:
Right Hand
Bore 2 Size:
Bore 3 Size:
Total Piston Area:
4.04 sq. in.
Mount Hole Size:
Mounted Height:
Pad Area:
11.00 sq. in.
Pad Volume:
5.20 cu. in.


Quick-Silver / ST series W6AR/ST nickel plated forged billet calipers, with six Thermlock pistons, deliver championship proven performance with heavy duty stopping power and reliability for sustained high heat competition. W6AR/ST calipers incorporate race technology into a radial mount body design with widespread adaptability and an expanded rotor compatibility range from 12.19 to 15.00 , including track update options for all W6AR Big Brake kits. Thermlock pistons, high-temp seals, SRS bridge plates, and two-piece bleed screw assemblies are standard in all calipers. Four high-temp race only brake pad compounds in the 6617 pad type allow precise tuning of the brake response, friction requirements and temperature range for all types of high performance and competition applications. The W6A/ST 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 component. Stress flow forging produces a part with the internal grain structure of the metal aligned in the direction of the flow of the body contour. The results are a caliper with superior clamping efficiency and ultimate strength against fatigue, stresses, and distortion under load. The performance of the W6A/ST 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 spring-loaded action of the plates also eliminates pad rattle. Snap ring clips lock the pad pins in place to provide positive retention and allow easy service without caliper removal. The bleed screws are recess mounted for protection against impact and debris. The fluid tubes are dampen mounted to protect them from fatigue or damage from vibration or debris.
Some parts are not legal for use in California or other states with similar laws/regulations

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