Billet Superlite 4 Lug Mount Caliper – Part No: 120-7571-rs
Call (805) 388-1188
Billet Superlite 4 Lug Mount-ST
Prod #: 120-7571-RS
Price: $459.90

Billet Superlite 4 Lug Mount-ST - Product Summary

Piston Count 4
Piston Area (in²) 5.18
Piston Type Thermlock
Dust Boot No
Rotor Dimensions
Rotor Width(in) 1.25
Rotor Diameter(in) 13.06
Pad Dimensions
Pad Area (in²) 8.2
Pad Volume (in³) 4.9
Duty Rating & Material
Material Aluminum
Weight(Lbs) 5.8
Colors & Finish
Color Black
Finish Black Anodize

Mount Center(in) 3.5
Mount Position Rear Mount
Mount Side Left Hand
Mount Type Lug
Product Documents
Product Data Sheet

Installation Instructions

120-7571-rs - Product Description

Billet Superlite 4 Lug Mount-ST

The billet SL4/ST caliper incorporates Wilwood's latest technology in a conventional 3.50" centered lug mount design, with weights starting at 4.94 pounds. This caliper series has been structurally designed for high clamping efficiency and low deflection in a body width compatible with all wide 5 and 5 x 5 style hubs. It is a direct replacement for all other Superlite style calipers.

For the ultimate protection in extreme sustained high heat competition, SL4/ST models are equipped with Wilwood's exclusive Thermlock® pistons. This multi-part piston assembly provides a highly effective thermal barrier that reduces heat transfer from the pads to the fluid, seals, and caliper body by as much as 30%. Seal life and fluid performance is increased proportionately. High temperature square faced seals provide the largest possible sealing surface area with controlled piston retraction on release.

Every SL4/ST caliper incorporates new and adapted performance features from other Wilwood designs. Each caliper is equipped with replaceable SRS stainless steel bridge wear plates. SRS plates eliminate the bridge wear caused by pad gouging to extend the service life of the caliper. The spring-loaded action of the SRS plates eliminates pad rattle and dampens the vibration harmonics that contribute to pad squeal. The bodies are machined with recesses to protect the fluid crossover tubes and bleed screws. The fluid tubes are dampen mounted and two piece bleed screw assemblies assure reliability in harsh conditions and round out the total performance package. The full range of Wilwood brake pad compounds is available in the 7420 type pads to match the brake response and heat range of any competition application.

Vehicle Applications
Driving Environment Street Performance
Vehicle Sub-Types Domestic
Application Duty Heavy Duty
Driving Environment Street Performance
Vehicle Sub-Types Import
Application Duty Medium Duty
Driving Environment Rally
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Road Race
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Late Model Asphalt
Vehicle Sub-Types ASA, All Pro, SW Tour, etc...
Application Duty Heavy Duty
Driving Environment Stock Cars
Vehicle Sub-Types NASCAR, BGN, CTS, ARCA, etc...
Application Duty Heavy Duty
Driving Environment Northeast Modified
Vehicle Sub-Types Dirt or Pavement
Application Duty Heavy Duty
Driving Environment Open Wheel
Vehicle Sub-Types Sprint, Midget, etc… Dirt or Pavement
Application Duty Heavy Duty
Driving Environment Off Road
Vehicle Sub-Types
Application Duty Heavy Duty

Product Specifications

Rotor Compatibility
Rotor Width(in) 1.25
Maximum Rotor Width(in) 1.38
Minimum Rotor Width(in) 1.19
Maximum Rotor Diameter(in) 13.06
Minimum Rotor Diameter(in) 11.75

Brake Pad Specifications
Brake Pad Type 1 7420
Brake Pad Type 2 N-A
Brake Pad Type 3 N-A
Total Pad Area (in²) 8.2
Total Pad Volume (in³) 4.9
Piston Specifications
Piston 1 Bore(in) 1.88
Piston 2 Bore(in 1.75
Piston 3 Bore(in)
Piston 4 Bore(in)
Total Piston Area (in²) 5.18

Mounting Specifications
Mount Type Lug
Mount Side Left Hand
Mount Center(in) 3.5
Mount Hole Size(in) 0.45
Mount Height(in) 2.85
Inlet Thread Size 1/8-27 NPT

Additional Notes

Parts & Accessories

O-Ring Kit 130-2427
Replacement Dust Boot N-A
Replacement Piston 1 200-7550
Replacement Piston 2 200-7551
Replacement Piston 3 N-A
Replacement Piston 4 N-A
Cross-Over O-Ring Kit N-A
Bridge Bolt Kit 230-5978
Wear Plate L/H 300-5923
Wear Plate R/H 300-5922
Pad Retainer N-A
Bleed Screw Kit 220-6069
Self Bleeder Tube 190-8310
Cross-Over Tube 190-5975

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