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Wilwood 120-9737 Dynapro Lug Mount Caliper, 3.50 Inch Mount, 1.75/1.25

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Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Finish:
Anodized
Color:
Black
Caliper Pistons:
Four
Rotor Diameter:
12.72
Caliper Mounting Type:
Lug
Mounting Side:
Universal
Thread Pitch:
1/8-27 NPT
MFG. Part #:
120-9737
Garage Sale:
No
Centerline of Holes:
3.50
Overall Length:
7.01
Bore Size:
1.75
Mounted Height:
2.89
Piston Diameter:
1.75
Rotor Thickness:
1.25
Bore 2 Size:
1.75
Mount Hole Size:
0.45
Weight:
4.10
Total Piston Area:
4.80
Pad Area:
6.36
Pad Volume:
3.00
Wilwood 120-9737 Dynapro Lug Mount Caliper, 3.50 Inch Mount, 1.75/1.25
Wilwood 120-9737 Dynapro Lug Mount Caliper, 3.50 Inch Mount, 1.75/1.25
Wilwood 120-9737 Dynapro Lug Mount Caliper, 3.50 Inch Mount, 1.75/1.25

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Details

Reviews

Q & A

What's in the Box

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.  

Customer Reviews

Rated 4 out of 5 by 1 reviewers.
RATING BREAKDOWN
1 reviews
5 Stars
0
4 Stars
1
3 Stars
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2 Stars
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1 Star
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RECOMMEND THIS PRODUCT:

Mazda Bob
Cairo, NE

Good product, would buy again

May 24, 2010
Easy to mount. Easy to bleed.
Yes, I recommend this product.
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Wilwood 120-9726 NDP Dynapro Lug Mount Caliper, 3.50 Inch Mnt 1.38/.38
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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 120-9728 NDP Dynapro Lug Mount Caliper, 3.50 Inch Mnt 1.38/.81
(Part #8351209728)
                        

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 120-9729 Dynapro Lug Mount Caliper, 3.50 Inch Mount, 1.38/1.25
(Part #8351209729)
                        

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 120-9734 NDP Dynapro Lug Mount Caliper, 3.50 Inch Mnt 1.75/.38
(Part #8351209734)
                        

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.

 
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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 NDP Dynapro Lug Mount Caliper, 3.50 Inch Mnt 1.75/.81
(Part #8351209736)
                        

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 15E-7266K NDL/Dynalite Bridge Bolt Brake Pads, Dynapro Poly-E
(Part #8357266)
                        

Replacement brake pads for your Wilwood NDL or Dynalite calipers (or comparable Ultra Lite calipers). 

  • Width 4.00"
  • Medium friction, high effective temperarture range in medium temperature pad group.
  • Smooth engagement, Flat torque curve
  • Low wear rate

Pads will fit:

  • Wilwood Billet NDL calipers
  • Wilwood Forged NDL calipers
  • Wilwood Dynalite calipers w/ Bridge Bolt
  • Ultra Lite UL-237

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

Compound Data Sheet (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.

Item Details

.600" thickness
Wilwood # 15E-7266K
Set of 4
Wilwood 150-8946K NDL/Dynalite Bridge Bolt Brake Pads, BP-10
(Part #8358858)
                        

Replacement brake pads for your Wilwood NDL or Dynalite calipers (or comparable Ultra Lite calipers). 

  • Width 4.00"
  • Medium friction compound with the low noise and low dust of a street performance compound and the increased friction characteristics of a semi-metallic race compound
  • Good low to middle temperature wear rates
  • Formulation specific for use with Polymetallic coated rotors

Pads will fit:

  • Wilwood Billet NDL calipers
  • Wilwood Forged NDL calipers
  • Wilwood Dynalite calipers w/ Bridge Bolt
  • Ultra Lite UL-237

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

Compound Data Sheet (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.

Item Details

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Wilwood # 150-8946K
Wilwood 130-2655 Forged Dynalite O-Ring Seal Kit, 1.75 Inch
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Replacement parts for Wilwood Forged Dynalite calipers.