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Wilwood 120-11128 Forged Superlite Internal Caliper, 1.38 / .81 Inch

Specs
Centerline of Holes:
3.50
Material Type:
Aluminum
Overall Length:
9.50
Weight:
5.20
Color:
Black
Sold in Quantity:
Each
Finish:
Anodized
Thread Pitch:
1/8-27 NPT
Bore Size:
1.38
Mounted Height:
2.85
Rotor Diameter:
13.06
Piston Diameter:
1.38
Caliper Pistons:
Four
Mounting Side:
Universal
MFG. Part #:
120-11128
Rotor Thickness:
0.81
Garage Sale:
No
Caliper Mounting Type:
Lug
Bore 2 Size:
1.38
Total Piston Area:
3.00
Mount Hole Size:
0.45
Pad Area:
8.20
Pad Volume:
4.90
Wilwood 120-11128 Forged Superlite Internal Caliper, 1.38 / .81 InchWilwood 120-11128 Forged Superlite Internal Caliper, 1.38 / .81 Inch
Wilwood 120-11128 Forged Superlite Internal Caliper, 1.38 / .81 Inch

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Wilwood 120-11128 Forged Superlite Internal Caliper, 1.38 / .81 Inch

Details

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Q & A

What's in the Box

New forged design features increased strength and improved fluid displacement.  Four-piston design for 11.75" X .810" thick rotors.  1/8" npt inlet, 3.50" mounting centers.

Wilwood Spec Sheet (Link)

You may also be interested in:

Wilwood 120-9729 Dynapro Lug Mount Caliper, 3.50 Inch Mount, 1.38/1.25
                        

These narrow mount (3.50") calipers are made of billet which gives them superior strength over the other 'Dyna' series of calipers. 1/8" NPT inlet. 

  Narrow Mount DynaPro (NDP) forged billet calipers represent the next generation of calipers available as an upgrade or direct replacement for the popular Narrow Mount Dynalite model series with 3.50" mounting. NDP calipers combine superior strength with several new performance enhancements to make these the best "Dyna" series calipers ever built.

 
The strength of the new DynaPro is a combination of process and design. NDP calipers are stress-flow forged from premium grade billet. Stress-flow forging realigns the grain structure of the metal within the contour of the body design. This process produces a part with superior strength over parts simply machined from straight grained blocks of billet. The FEA generated body design incorporates a highly fortified radial transition that eliminates steps and shoulders between the piston housings and the bridges. Incorporating a radius in this critical area substantially increases resistance to deflection and caliper body separation under load. For additional strength, all NDP calipers are fitted with center bridge bolts to provide additional resistance against separation over the center of the pads. Structural deflection and volume displacement testing have proven the efficiency of this innovative design. Reductions in overall deflection, and the subsequent decreases in fluid volume displacement, translate to increased clamping efficiency with less pedal travel. The bottom line is a firm, responsive pedal with outstanding stopping power.   

The DynaPro is loaded with other enhancements for performance and wider application. The calipers feature Quick-E-Clip pad retainers that support a 7816 type brake pad from the top. Not only does it allow for fast pad service without caliper removal, the bottom pad supports common to the earlier NDL models have been removed to create a slimmer profile with more bottom side clearance and easier mounting in tight clearance applications.   

Heavy wall stainless steel pistons are used to resist corrosion and slow the heat transfer from the pads. The heavy wall sectional thickness also provides additional strength against backside deflection to provide a firm pedal feel with efficient clamping at all pressures.   

Each NDP is also fitted with replaceable stainless steel SRS bridge plates. SRS plates eliminate the bridge wear caused by pad gouging to 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 during engagement. The package is completed with internal fluid passages and four corner bleed screws that simplify bleeding regardless of the mounting location.  
Wilwood 120-9736-SI Narrow Dynapro Lug Mount Caliper, 3.50 Inch Mount
                        

Narrow Mount DynaPro (NDP) forged billet calipers represent the next generation of calipers available as an upgrade or direct replacement for the popular Narrow Mount Dynalite model series with 3.50" mounting. NDP calipers combine superior strength with several new performance enhancements to make these the best "Dyna" series calipers ever built.

The strength of the new DynaPro is a combination of process and design. NDP calipers are stress-flow forged from premium grade billet. Stress-flow forging realigns the grain structure of the metal within the contour of the body design. This process produces a part with superior strength over parts simply machined from straight grained blocks of billet. The FEA generated body design incorporates a highly fortified radial transition that eliminates steps and shoulders between the piston housings and the bridges. Incorporating a radius in this critical area substantially increases resistance to deflection and caliper body separation under load. For additional strength, all NDP calipers are fitting with center bridge bolts to provide additional resistance against separation over the center of the pads. Structural deflection and volume displacement testing have proven the efficiency of this innovative design. Reductions in overall deflection, and the subsequent decreases in fluid volume displacement, translate to increased clamping efficiency with less pedal travel. The bottom line is a firm, responsive pedal with outstanding stopping power.

Garage Sale - Wilwood Billet Radial Mount Caliper - .380 Inch Rotor
                        

The Billet NDLR caliper is a compact, lightweight, and rugged caliper that provides strong clamping force from four 1.75" stainless cup pistons. The bodies are fully CNC machined from billet with internal fluid ports that eliminate external fluid tubes. Each caliper is equipped with four corner bleeds to accommodate mounting in all positions. The bridges are equipped with stainless steel anti-rattle wear plates. These plates reduce bridge wear and provide smooth, rattle free operation of the pads.

Starting at 2.70 pounds, this compact and lightweight proven performer is now available in a radial mount configuration. The Billet NDLR calipers can be directly mounted over studs, or used with a radial mount bracket kit in place of a tab mount caliper.

Radial mount, 1.75" pistons.

Click Here for Detailed Product Sheet (pdf)

NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

Wilwood 150-8854K Superlite BP-10 Bridge Bolt Brake Pads, .800 Inch
                        

Genuine Wilwood and US Brake replacement brake pads for your Forged Superlite calipers with bridge bolts.

  • Width 4.74"
  • High friction throughout temperature range, High temperature range.
  • Formulation specific for use with Polymetalic coated rotors

Tech Tip:  Only use full metallic pads on coated rotors.

Sold as a set of 4, 1 set will be needed to outfit 2 calipers.

Brake Pad Brochure (PDF) 

Brake Pad Brand Guide (Link) 

Learn how to properly Bed-In your brake pads by reading our tech article.  Bedding-In Brake Pad Procedure.

Wilwood 15E6084K Superlite Poly-E Bridge Bolt Brake Pads, .800 Inch
                        

Genuine Wilwood and US Brake replacement brake pads for your Forged Superlite calipers with bridge bolts.

  • Width 4.74"
  • High friction throughout temperature range, High temperature range.
  • Formulation specific for use with Polymetalic coated rotors

Tech Tip:  Only use full metallic pads on coated rotors.

Sold as a set of 4, 1 set will be needed to outfit 2 calipers.

Brake Pad Brochure (PDF) 

Brake Pad Brand Guide (Link) 

Learn how to properly Bed-In your brake pads by reading our tech article.  Bedding-In Brake Pad Procedure.

Wilwood 15B-5939K Poly-B Brake Pad S/L Set of 4
                        
  • Medium-high friction compound with good cold response and a gently rising friction curve as temperature increases.
  • Smooth, predictable engagement with excellent control over a wide range of applications.
  • Long wearing pad in the middle temperature ranges with moderate wear in sustained high heat conditions.
  • Easily bedded without abrasion on new iron or steel rotors.
  • Race ONLY compound is a value priced, proven workhorse for most weekly category asphalt late models, sprints, modifieds, and sportsman divisions.
  • Hard braking dirt late models, DIRT modifieds, and rear inboard sprint brakes with vented iron or steel rotors.
  • SCCA club racers, rally, and auto-cross.

Tech Tip:  Only use full metallic pads on coated rotors.

Sold as a set of 4, 1 set will be needed to outfit 2 calipers.

Brake Pad Brochure (PDF) 

Brake Pad Brand Guide (Link) 

Learn how to properly Bed-In your brake pads by reading our tech article.  Bedding-In Brake Pad Procedure.