Wednesday, December 07, 2016
Hat No: 170-12770


Big Brake Hats

Big Brake Hat - Short Offset
Wilwood Big Brake Hat - Short Offset Hat

Wilwood Big Brake Hat - Short Offset Hat
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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 ...   Continue >>

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Product Number: 170-12770     Price: $134.93
Big Brake Hat - Short Offset - Product Summary
Hat Dimensions
Mount Hole Type: Rotor Bolt Circle (in): Hat Offset (in): Center Reg. (in):
Threaded 6 x 6.25 0.64 3.06
Hat Type
Material: Mount Style: Finish: Weight (Lbs.):
Aluminum Fixed Mount Black E-Coat 1.2
Bolt Circle Dimensions
Hat Bolt Circle 1: Hat Bolt Circle 2: Hat Bolt Circle 3:
4 x 3.86
Application Info
Application Note: Hat Bolt Kit Part #:
2012 Fiat 500 230-12120
Cautionary Info
Application Note:

Rotor Hat Applications

Rotor Hat Dimensions
Big Brake Hat - Short Offset Hat Drawing

Big Brake Hat - Short Offset Hat Drawing
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Additional Hat Dimensions
Rotor Mount Hole Size (in): 5/16-18
Shoe I.D. (in)
Clearance I.D. (in): 5.2
Face Thickness (in): 0.25
Hat Stud Diamenter - BC 1 (in): 0.5
Hat Stud Diamenter - BC 2 (in):
Hat Stud Diamenter - BC 3 (in):
Additional Notes:
3.06 " diameter register with counterbore for register ring.

Wilwood Compatible Rotors: Big Brake Hat - Short Offset
Drilled Steel Rotor
Wilwood Drilled Steel Rotor

Wilwood Drilled Steel Rotor
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Rotor Dimensions
Rotor Diameter Range: Rotor Width Range:
10.75 0.35
Steel rotors have applications in all types of motorsports. Steel rotors provide a durable lightweight option in applications where sustained temperatures remain in the low to moderate range, and high heat spikes are only observed on an intermittent basis. This could be anything from a hard stopping drag race car at the end of a quarter mile, or a high speed stock car coming in from a qualifier at a super speedway. Steel rotors can also be found in lighter weight open wheel cars such as sprints and modifieds, and a variety of light weight, open wheel road course racers. A special alloy and proprietary manufacturing processes give these rotors high resistance to thermal distortion with excellent friction and wear characteristics against the pads. View Steel Rotors
GT 72 Straight Vane Rotor
Wilwood GT 72 Straight Vane Rotor

Wilwood GT 72 Straight Vane Rotor
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Rotor Dimensions
Rotor Diameter Range: Rotor Width Range:
11 0.81
GT 72 straight vane rotors provide high value performance and rugged durability for a wide range of competition, high performance, and sport driving applications. Don't confuse these rotors with bargain priced off-brand named parts. Wilwood's modern manufacturing capability, combined with large scale economies, make it possible to offer this level of quality and performance at such an affordable price. Coupled with Wilwood's exclusive Spec-37 material, a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear. View GT Rotors
Solid Steel Rotor
Wilwood Solid Steel Rotor

Wilwood Solid Steel Rotor
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Rotor Dimensions
Rotor Diameter Range: Rotor Width Range:
10.75 0.35
Steel rotors have applications in all types of motorsports. Steel rotors provide a durable lightweight option in applications where sustained temperatures remain in the low to moderate range, and high heat spikes are only observed on an intermittent basis. This could be anything from a hard stopping drag race car at the end of a quarter mile, or a high speed stock car coming in from a qualifier at a super speedway. Steel rotors can also be found in lighter weight open wheel cars such as sprints and modifieds, and a variety of light weight, open wheel road course racers. A special alloy and proprietary manufacturing processes give these rotors high resistance to thermal distortion with excellent friction and wear characteristics against the pads. View Steel Rotors
SRP Drilled Performance Rotor
Wilwood SRP Drilled Performance Rotor

Wilwood SRP Drilled Performance Rotor
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Rotor Dimensions
Rotor Diameter Range: Rotor Width Range:
10.75 11 0.81
SRP Drilled Performance Rotors feature a specially engineered directional cross drill and face slot pattern that improve brake response and pad performance throughout the entire range of light to heavy braking. The venting and cleaning action of the holes and slots will reduce pad glaze and disperse gasses and heat generated during the pad to rotor interface. The holes and slots also inhibit irregular pad compound build-up on the rotor faces resulting in smoother engagement and improved pedal response in all conditions. The material removed also contributes to lower rotating and unsprung suspension weight. View SRP Rotors
SRP Drilled Performance Rotor
Wilwood SRP Drilled Performance Rotor

Wilwood SRP Drilled Performance Rotor
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Rotor Dimensions
Rotor Diameter Range: Rotor Width Range:
10.75 11 0.81
SRP Drilled Performance Rotors feature a specially engineered directional cross drill and face slot pattern that improve brake response and pad performance throughout the entire range of light to heavy braking. The venting and cleaning action of the holes and slots will reduce pad glaze and disperse gasses and heat generated during the pad to rotor interface. The holes and slots also inhibit irregular pad compound build-up on the rotor faces resulting in smoother engagement and improved pedal response in all conditions. The material removed also contributes to lower rotating and unsprung suspension weight. View SRP Rotors
Ultralite HP 30 Vane Rotor
Wilwood Ultralite HP 30 Vane Rotor

Wilwood Ultralite HP 30 Vane Rotor
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Rotor Dimensions
Rotor Diameter Range: Rotor Width Range:
10.75 11 0.81
Ultra-Light ULHP straight vane rotors provide high value performance and rugged durability for a wide range of competition, high performance, and sport driving applications. Do not confuse these rotors with bargain priced off-brand named parts. Wilwoods modern manufacturing capability, combined with large scale economics, make it possible to offer this level of quality and performance at such an affordable price. View Ultralite Rotors
Ultralite HPS 30 Vane Rotor
Wilwood Ultralite HPS 30 Vane Rotor

Wilwood Ultralite HPS 30 Vane Rotor
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Rotor Dimensions
Rotor Diameter Range: Rotor Width Range:
11 0.81
Ultra-Light ULHP straight vane rotors provide high value performance and rugged durability for a wide range of competition, high performance, and sport driving applications. Don't confuse these rotors with bargain priced off-brand named parts. Wilwood's modern manufacturing capability, combined with large scale ecoNmies, make it possible to offer this level of quality and performance at such an affordable price. View Ultralite Rotors