Billet Narrow Superlite 4R Radial Mount Caliper – Part No: 120-8071-L
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Billet Narrow Superlite 4
Prod #: 120-8071-L
Price: $504.07

Billet Narrow Superlite 4 - Product Summary
Caliper No: 120-8071-L
Billet Narrow Superlite 4

Pistons
Piston Count 4
Piston Area (in²) 4.80
Piston Type Aluminum
Dust Boot Yes
Rotor Dimensions
Rotor Width (in) 1.25
Rotor Diameter(in) 14.00
Pad Dimensions
Pad Area (in²) 8.2
Pad Volume (in³) 3.8
Duty Rating & Material
Material Billet Aluminium
Weight(Lbs) 5.0
Colors & Finish
Color Black
Finish Black Powder Coat

Mounting
Mount Center(in) 5.98
Mount Position
Mount Side Left Hand
Mount Type Radial
UPC Number
UPC 889545006001
Product Documents
Product Data Sheet

Installation Instructions


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

120-8071-L - Product Description

Billet Narrow Superlite 4

The Superlite caliper series has set the standard for many years in short track, late model, modified and open wheel competition. It has also enjoyed prominence in a variety of road-race, off-road, rally and sport driving applications. Starting at 4.40 pounds, the Forged Billet Superlite (FSL) is the newest innovation to this series from Wilwood. New and adaptive technologies have been applied providing substantial improvements in strength, fluid volume displacement, and overall performance.

The FSL body design is a highly efficient product of computer generated solid modeling and stress analysis technology. Each caliper features closed end bridges with a radial transition to the piston body housings. The elimination of machined steps and sharp shoulders in this critical area provides a measurable increase in overall body strength and resistance to deflection under load. Center bridge bolts replace cotter pins to provide additional support and allow quick access with positive brake pad retention. Clamping force, structural deflection, and volume displacement tests have proven the superior strength and efficiency of the FSL. On-track testing has proven driver satisfaction. The bottom line is better stopping power with less pedal travel.

The FSL body design is a highly efficient product of computer generated solid modeling and stress analysis technology. Each caliper features closed end bridges with a radial transition to the piston body housings. The elimination of machined steps and sharp shoulders in this critical area provides a measurable increase in overall body strength and resistance to deflection under load. Center bridge bolts replace cotter pins to provide additional support and allow quick access with positive brake pad retention. Clamping force, structural deflection, and volume displacement tests have proven the superior strength and efficiency of the FSL. On-track testing has proven driver satisfaction. The bottom line is better stopping power with less pedal travel.


Vehicle Applications
Driving Environment Street Rods
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Street Performance
Vehicle Sub-Types Domestic
Application Duty Heavy Duty
Driving Environment Street Performance
Vehicle Sub-Types Import
Application Duty Heavy Duty
Driving Environment Rally
Vehicle Sub-Types
Application Duty Medium Duty
Driving Environment Road Race
Vehicle Sub-Types
Application Duty Medium Duty

Product Specifications

Rotor Compatibility
Rotor Width (in) 1.25
Maximum Rotor Width (in) 1.25
Minimum Rotor Width (in) 1.19
Maximum Rotor Diameter(in) 14.00
Minimum Rotor Diameter(in) 11.75

Brake Pad Specifications
Brake Pad Type 1 7416
Brake Pad Type 2 N-A
Brake Pad Type 3 N-A
Total Pad Area (in²) 8.2
Total Pad Volume (in³) 3.8
Mount
Piston Specifications
Piston 1 Bore (in) 1.75
Piston 2 Bore (in) 1.75
Piston 3 Bore (in)
Total Piston Area (in²) 4.80

Mounting Specifications
Mount Type Radial
Mount Side Left Hand
Mount Center(in) 5.98
Mount Hole Size(in) 0.39
Mount Height(in) 1.45
Inlet Thread Size 1/8-27 NPT
Pad Dimensions & Part Numbers
Pad Dimensions for the Billet Narrow Superlite 4 Pad Dimensions for the Billet Narrow Superlite 4 Zoom Image
Axle Set P/N
Pad Type
Compound
Non-Bedded Pads - by Compounds
7416
BP-10
7416
BP-20
7416
BP-28
7416
BP-30
7416
BP-35
7416
BP-40
7416
BP-45
7416
BP-Q
7416
TX1
Mount Dimensions & Part Numbers

Dimensions for the Billet Narrow Superlite 4 Dimensions for the Billet Narrow Superlite 4 Zoom Image

Additional Notes

The superior strength of this innovative new caliper is combined with proven performance features from other Wilwood designs. Each caliper is equipped with Wilwood's replaceable SRS stainless steel bridge plates. SRS plates eliminate the bridge wear caused by pad gouging and extend the service life of the caliper body. The spring-loading action of the SRS plates also eliminates pad rattle and dampens the vibration harmonics that contribute to squeal under braking. Other standard Wilwood features include high-temperature, square faced o-ring seals for positive sealing, controlled piston retraction, and long service life in high heat conditions. Stainless steel pistons are used to resist corrosion and retard heat transfer from the pads. Fluid tubes are vibration dampened to resist stress fractures and reduce damage caused by track debris. Two-piece bleed screw assemblies provide long, reliable service life and are easily replaced if necessary.

Forged Billet Superlite calipers are a direct replacement for all Wilwood Superlite and similar competitive brand calipers with 3.50" centered mounting tabs. Calipers are available in the popular 1.75", 1.62”, 1.38", 1.25” and 1.12” piston sizes for .81", 1.10" and 1.25" rotor widths. FSL calipers use the same 7420 type bridge bolt brake pad used in all Superlite 6 piston calipers. The full range of PolyMatrix pad compounds is available to match brake response and heat range to any application.


Parts & Accessories

O-Ring Kit 130-2655
Replacement Dust Boot 210-7210
Replacement Piston 1 200-7322
Replacement Piston 2 200-7322
Replacement Piston 3 N-A
Replacement Piston 4 N-A
Cross-Over O-Ring Kit N-A
Bridge Bolt Kit 230-7049
Wear Plate L/H 300-6596
Wear Plate R/H 300-6595
Pad Retainer N-A
Bleed Screw Kit 220-6069
Self Bleeder Tube N-A
Cross-Over Tube 190-8369
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Version: 3.05 June 23, 2023