Street Rod Rotor Hats

Rotor Hats

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Select from the following options to display a list of hats for Wilwood Brake Kits:
Rotor Bolt Circle:
Hat Offset:
Wheel Stud Circle:
Mount Style:

Search Results Application: Street Rod
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 7.00
Hat Offset: 0.41
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-12159
Info Details
Center Reg Dia 2.8
Whl Stud Cir Dia/Stud Dia 4.5 / 0.58 
I.D. Clear(in) 6.18
Shoe I.D.
Face Thick 0.25
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 7.00
Hat Offset: 2.02
Wheel Stud Circle(s): 5 Holes  on 4.5  ;  4.75   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
Hat is drilled and countersunk in three places to accommodate hat to hub anchoring screws used with specific Wilwood hat mount hubs. Use 230-7032 (contains 6 qty. 1/4-20 x .50 Flat Head Hex Drive mounting screws)
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-9321
Info Details
Center Reg Dia 2.67
Whl Stud Cir Dia/Stud Dia 4.5 / 0.52 
I.D. Clear(in) 5.86
Shoe I.D.
Face Thick 0.25
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 7.06
Hat Offset: 0.25
Wheel Stud Circle(s): 5 Holes  on 4.75      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-7746
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.75 / 0.52 
I.D. Clear(in) 6.18
Shoe I.D.
Face Thick 0.3
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.25
Hat Offset: 0.23
Wheel Stud Circle(s): 5 Holes  on 4.75      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
Wheel mounting pad must not be larger than 6.00" to fit into inset area of this hat.
Ordering Information for Big Brake Hat - Short Offset
Item No 170-12390
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.75 / 0.52 
I.D. Clear(in) 7.75
Shoe I.D.
Face Thick 0.3
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.25
Hat Offset: 0.26
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-12339
Info Details
Center Reg Dia 2.8
Whl Stud Cir Dia/Stud Dia 4.5 / 0.58 
I.D. Clear(in) 7.75
Shoe I.D.
Face Thick 0.32
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: -0.09
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Short Offset
Item No 170-12471
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.5 / 0.58 
I.D. Clear(in) 8.25
Shoe I.D.
Face Thick 0.31
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.29
Wheel Stud Circle(s): 5 Holes  on 4.5  ;  4.75   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-8919
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.5 / 0.52 
I.D. Clear(in) 7.72
Shoe I.D.
Face Thick 0.36
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.41
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-6223
Info Details
Center Reg Dia 2.8
Whl Stud Cir Dia/Stud Dia 4.5 / 0.58 
I.D. Clear(in) 7.75
Shoe I.D.
Face Thick 0.27
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.41
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Short Offset
Item No 170-14683
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.5 / 0.58 
I.D. Clear(in) 8.01
Shoe I.D.
Face Thick 0.27
Price $146.93
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.53
Wheel Stud Circle(s): 5 Holes  on 5.32      
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-12829
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 5.32 / 0.52 
I.D. Clear(in) 7.6
Shoe I.D.
Face Thick 0.25
Price $194.25
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.54
Wheel Stud Circle(s): 5 Holes  on 4.5  ;  4.75   
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-11804
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.5 / 0.58 
I.D. Clear(in) 7.09
Shoe I.D.
Face Thick 0.25
Price $194.25
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.54
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-10761
Info Details
Center Reg Dia 2.44
Whl Stud Cir Dia/Stud Dia 4.5 / 0.52 
I.D. Clear(in) 7.45
Shoe I.D.
Face Thick 0.25
Price $194.25
Purchase
Call (805) 388-1188
Big Brake Dynamic Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.54
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Dynamic Hat - Short Offset
Mount Type: Dynamic Mount
Material: Aluminum

Big Brake Dynamic Hat - Short Offset Description

GT Series Dynamic Mount Rotor Drag Hats are engineered to withstand the rigors and demands of extreme motorsports competition. Each hat is precision machined from premium grade aluminum offering high strength with low unsprung and rotating weight. Wilwood T-nuts float within the hat and provide true dynamic mounting of a standard through-hole mount rotors in 8 x 7.00" rotor mount patterns. . The wide load bearing load surface of the T-nut and the straight through-hole mount rotors provide the most durable and accurate method of isolating potential pad engagement harmonics and the in-service thermal variations that occur between the hat and the rotor.
NOTE & CAUTIONS:

Ordering Information for Big Brake Dynamic Hat - Short Offset
Item No 170-14869
Info Details
Center Reg Dia 2.53
Whl Stud Cir Dia/Stud Dia 4.5 / 0.58 
I.D. Clear(in) 8.01
Shoe I.D.
Face Thick 0.25
Price $209.94
Purchase
Call (805) 388-1188
Big Brake Dynamic Hat - Straight Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.55
Wheel Stud Circle(s): 5 Holes  on 4.72      
Type: Big Brake Dynamic Hat - Straight Bell
Mount Type: Dynamic Mount
Material: Aluminum

Big Brake Dynamic Hat - Straight Bell Description

GT Series Dynamic Mount Rotor Hats are engineered to withstand the rigors and demands of extreme motorsports competition. Each hat is precision machined from premium grade aluminum offering high strength with low unsprung and rotating weight. Wilwood T-nuts float within the hat and provide true dynamic mounting of a standard through-hole mount rotor. The wide load bearing load surface of the T-nut and the straight through-hole mount rotors provide the most durable and accurate method of isolating potential pad engagement harmonics and the in-service thermal variations that occur between the hat and the rotor.
NOTE & CAUTIONS:

Ordering Information for Big Brake Dynamic Hat - Straight Bell
Item No 170-15230
Info Details
Center Reg Dia 2.66
Whl Stud Cir Dia/Stud Dia 4.72 / 0.64 
I.D. Clear(in) 6.9
Shoe I.D.
Face Thick 0.3
Price $209.94
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.55
Wheel Stud Circle(s): 5 Holes  on 4.41      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-14484
Info Details
Center Reg Dia 2.68
Whl Stud Cir Dia/Stud Dia 4.41 / 0.59 
I.D. Clear(in) 7.75
Shoe I.D.
Face Thick 0.28
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.64
Wheel Stud Circle(s): 5 Holes  on 4.41      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:

Ordering Information for Big Brake Hat - Short Offset
Item No 170-14585
Info Details
Center Reg Dia 2.68
Whl Stud Cir Dia/Stud Dia 4.41 / 0.59 
I.D. Clear(in) 8.01
Shoe I.D.
Face Thick 0.28
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.64
Wheel Stud Circle(s): 5 Holes  on 4.5  ;  4.75   
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
3.06" diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Short Offset
Item No 170-9128
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.5 / 0.58 
I.D. Clear(in) 6.3
Shoe I.D.
Face Thick 0.31
Price $194.25
Purchase
Call (805) 388-1188
Big Brake Dynamic Bobbin Mount Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.658
Wheel Stud Circle(s): 5 Holes  on 4.5  ;  4.75   
Type: Big Brake Dynamic Bobbin Mount Hat - Short Offset
Mount Type: Dynamic Mount
Material: Aluminum

Big Brake Dynamic Bobbin Mount Hat - Short Offset Description

Wilwood's new Dynamic Bobbin Mount Hats incorporate a new rotor mounting system that allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Brake response and pedal feel remain consistent. Pad knock back and rotor drag are eliminated. The hats are no longer distorted by stresses generated by thermal expansion and shrinkage of the rotors. All problems associated with thermal distortion are eliminated.
NOTE & CAUTIONS:

Ordering Information for Big Brake Dynamic Bobbin Mount Hat - Short Offset
Item No 170-12624
Info Details
Center Reg Dia 2.8
Whl Stud Cir Dia/Stud Dia 4.5 / 0.52 
I.D. Clear(in) 7.31
Shoe I.D.
Face Thick 0.3
Price $299.93
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.67
Wheel Stud Circle(s): 5 Holes  on 4.75      
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Iron

Parking Brake Hat - Standard Description

These premium grade cast iron hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:

Ordering Information for Parking Brake Hat - Standard
Item No 170-8169
Info Details
Center Reg Dia 2.78
Whl Stud Cir Dia/Stud Dia 4.75 / 0.52 
I.D. Clear(in) 7.1
Shoe I.D. 7.48
Face Thick 0.25
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.7
Wheel Stud Circle(s): 5 Holes  on 4.41      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Short Offset
Item No 170-12791
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.41 / 0.59 
I.D. Clear(in) 7.09
Shoe I.D.
Face Thick 0.25
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Hat - Flared Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.7
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Hat - Flared Bell
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Flared Bell Description

GT Series Big Brake Flared Bell hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions.Flared Bell Hats are generally used with rotor mount bolt circles of 8.38" and larger. Offsets range from 1.88" to 3.00" for rotor diameters 12.19" and up.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Flared Bell
Item No 170-12050
Info Details
Center Reg Dia 3.06
Whl Stud Cir Dia/Stud Dia 4.5 / 0.63 
I.D. Clear(in) 7.09
Shoe I.D.
Face Thick 0.28
Price $170.58
Purchase
Call (805) 388-1188
Big Brake Dynamic Hat - Straight Bell
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.79
Wheel Stud Circle(s): 5 Holes  on 4.72      
Type: Big Brake Dynamic Hat - Straight Bell
Mount Type: Dynamic Mount
Material: Aluminum

Big Brake Dynamic Hat - Straight Bell Description

GT Series Dynamic Mount Rotor Hats are engineered to withstand the rigors and demands of extreme motorsports competition. Each hat is precision machined from premium grade aluminum offering high strength with low unsprung and rotating weight. Wilwood T-nuts float within the hat and provide true dynamic mounting of a standard through-hole mount rotor. The wide load bearing load surface of the T-nut and the straight through-hole mount rotors provide the most durable and accurate method of isolating potential pad engagement harmonics and the in-service thermal variations that occur between the hat and the rotor.
NOTE & CAUTIONS:

Ordering Information for Big Brake Dynamic Hat - Straight Bell
Item No 170-15229
Info Details
Center Reg Dia 2.66
Whl Stud Cir Dia/Stud Dia 4.72 / 0.64 
I.D. Clear(in) 6.9
Shoe I.D.
Face Thick 0.3
Price $209.94
Purchase
Call (805) 388-1188
Parking Brake Hat - Standard
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.81
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Parking Brake Hat - Standard
Mount Type: Fixed Mount
Material: Iron

Parking Brake Hat - Standard Description

These premium grade cast iron hats are used with Wilwood's internal shoe parking brake kits. Each hat is a precision machined, threaded hole design for use in conjunction with through-hole mount rotors. After machining, the hats are electro-coated for corrosion resistance.
NOTE & CAUTIONS:

Ordering Information for Parking Brake Hat - Standard
Item No 170-9599
Info Details
Center Reg Dia 3.54
Whl Stud Cir Dia/Stud Dia 4.5 / 0.51 
I.D. Clear(in) 6.11
Shoe I.D. 6.61
Face Thick 0.2
Price $194.93
Purchase
Call (805) 388-1188
Big Brake Hat - Short Offset
Rotor Bolt Circle: 12 x 8.75
Hat Offset: 0.81
Wheel Stud Circle(s): 5 Holes  on 4.5      
Type: Big Brake Hat - Short Offset
Mount Type: Fixed Mount
Material: Aluminum

Big Brake Hat - Short Offset Description

GT Series Big Brake Short Offset hats are precision machined from premium aluminum alloys for high strength and attention to minimized weight. Hats in this category feature threaded rotor mount holes for use with standard through-hole mount rotors. Threaded hole hats may also be used with T-Nuts or bobbins designed for use with specially machined slotted hole dynamic mount rotors. When used in conjunction with matched Wilwood rotor hardware kits, GT hats provide solid, reliable performance in the most demanding conditions. Short Offset Hats are for narrow space applications with offsets often less than 1.00". They are available for most rotor bolt patterns in a variety of four and five lug wheel patterns.
NOTE & CAUTIONS:
3.06 " diameter register with counterbore for register ring.
Ordering Information for Big Brake Hat - Short Offset