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Wilwood 120-11128 FSLI Forged Superlite Brake Caliper - 6-Piston

Part of: Wilwood FSLI Superlite Forged Brake Caliper

Other options in this family: Wilwood 120-11136 Wilwood 120-11134 Wilwood 120-11130 Wilwood 120-11133 Wilwood 120-11125

Manufacturer

Picture for manufacturer Wilwood

Part Number

120-11128
11 reviews
Sale Price

$253.63

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Wilwood FSLI (Forged Superlite Internal) caliper represents the pinnacle of racing brake caliper technology, designed for short track, late model, modified, open wheel, road race, off-road, rally, and high-performance street applications. This 6-piston caliper delivers superior stopping power with reduced pedal travel compared to conventional designs.

Stress-Flow Forged Construction:

Each caliper body is stress-flow forged from premium grade aluminum alloy billets, a process that re-aligns the metal's internal grain structure to flow within the contour of the caliper body. This eliminates the stresses and grain structure interruptions that occur when machining straight block billets, creating the strongest possible aluminum caliper body.

Advanced Engineering Features:

  • Computer-generated solid modeling and stress analysis optimized design
  • Closed-end bridges with radial transition to piston housings eliminate stress concentrations
  • Center bridge bolts replace cotter pins for positive pad retention and quick access
  • Replaceable SRS stainless steel bridge plates eliminate pad gouging and extend caliper life
  • Spring-loading action of SRS plates eliminates pad rattle and reduces brake squeal
  • High-temperature square-faced O-ring seals for positive sealing and controlled piston retraction
  • Stainless steel pistons resist corrosion and reduce heat transfer from pads
  • Two-piece bleed screw assemblies for reliable, long-term service

Compatibility and Applications:

FSLI calipers are direct replacements for all Wilwood Superlite and similar competitive brand calipers with 3.50-inch centered mounting tabs. Available in multiple piston sizes including 1.75", 1.62", 1.38", 1.25", and 1.12" to accommodate rotor widths of 0.81", 1.10", and 1.25". Uses 7420-type bridge bolt brake pads, compatible with the full range of Wilwood PolyMatrix pad compounds to match brake response and heat range to any application.

Extensive testing has proven the FSLI's superior strength, reduced structural deflection under load, and improved volume displacement characteristics, translating to better on-track performance and driver confidence.

Products specifications

Brackets Included

No

Brake Pad Type 1

7420

Brake Pads Included

No

Caliper Color

Black Anodize

Caliper Finish

Black anodized

Caliper Logo

Wilwood

Caliper Material

Aluminum

Caliper Piston Quantity

Four

Caliper Series

FSLI

Caliper Style

4-Piston

Maximum Rotor Diameter(In)

13.06

Maximum Rotor Width(In)

0.84

Minimum Rotor Diameter(In)

11.75

Minimum Rotor Width(In)

0.75

Mount Center(In)

3.5

Mount Height(In)

2.85

Mount Hole Size(In)

0.45

Mount Side

Universal

Mount Type

Lug

Pad Area (in²)

8.2

Pad Type

7416

Pad Volume (in³)

4.9

Parking Brake Provision

No

Piston 1 Bore(In)

1.38

Piston 2 Bore(In)

1.38

Piston Area

3

Piston Diameter (in)

1.380 in.

Pistons Area (in²)

3.00

Pistons Count

4

Pistons Type

Stainless

Position

Left/Right

Quantity

Sold individually.

Rotor Diameter(In)

13.06

Rotor Thickness (in)

0.810 in.

Rotor Width(In)

0.81

Total Pad Area (in²)

8.2

Total Pad Volume (in³)

4.9

Total Piston Area (in²)

3.00

Weight(Lbs)

5.2

Very easy to use, free shipping, A+

Price of the parts were almost half of a local auto parts store, delivery was quicker than estimated and I received everything exactly as I had ordered. Excellent service!

Exactly what I ordered and quick

Came very fast

It was good. I received my parts before the weekend and they were in good shap. Thank you.

good service

Good experience

never heard of this site before so i decided to order a small item, super fast shipping and great prices. when my shifter came in it was in perfect condition. i will be doing business with Autoplicity again.

The shipping was fast and the customer service was great. I accidentally hit submit twice, and they promptly cancelled my accidental order. If you have any problems, just call!

Great prices, always have inventory when I need it.

Ordered an ARP ring compressor, best price I could find online, Fast shipping A++

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