Hat No: 170-5588


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GT Hat - Flared Bell
Prod #: 170-5588
Price: $235.38
GT Hat - Flared Bell 170-5588

Hat Dimensions
Mount Hole Type Threaded
Rotor Bolt Circle (in) 8 x 8.50
Hat Offset (in) 2.500
Center Reg. (in) 3.06
Hat Type
Material Aluminum
Mount Style Fixed Mount
Finish Black E-Coat
Weight (lbs) 2.200
Bolt Circle Dimensions
Hat Bolt Circle 1 5 x 5.00
Hat Bolt Circle 2
Hat Bolt Circle 3
Application Info
Application Note Nascar
Hat Bolt Kit Part # 230-4572
Application Note
Application Note
GT Hat - Flared Bell - Product Description

GT Series 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.




Vehicle Applications
Driving Environment Rally
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Road Race
Vehicle Sub-Types
Application Duty Heavy Duty
Driving Environment Late Model Asphalt
Vehicle Sub-Types ASA, All Pro, SW Tour, etc...
Application Duty Heavy Duty

Rotor Hat Dimensions

GT Hat - Flared Bell Hat Drawing GT Hat - Flared Bell Hat Drawing Zoom Image
Additional Hat Dimensions
Rotor Mount Hole Size (in) 1/4-20
Shoe I.D. (in)
Clearance I.D. (in) 6.40
Face Thickness (in) 0.25
Hat Stud Diamenter - BC 1 (in) 0.640
Hat Stud Diamenter - BC 2 (in)
Hat Stud Diamenter - BC 3 (in)
Additional Notes
Hat is drilled and countersunk in five places to accommodate hat to hub anchoring screws. Use 230-2482 (contains 5 qty. 1/4-28 x 1.00 Flat Head Hex Drive mounting screws)

Wilwood Compatible Rotors

Drilled Steel Dynamic Mount Rotor


Rotor Dimensions
Rotor Diameter Range 12.19
Rotor Width Range 0.31

Drilled Steel Dynamic Mount Rotor Rotors

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 48 Curved Vane Rotor


Rotor Dimensions
Rotor Diameter Range 12.19
Rotor Width Range 1.25

GT 48 Curved Vane Rotor Rotors

GT-48 curved vane rotors are built for the extreme conditions of professional motorsports. The superior heat absorption and dissipation characteristics of these heavy wall directional vane rotors are the keys to preventing heat fade and realizing long service life from the rotors and pads. All rotors are cast from premium grade, long grain carbon iron for long wear, thermal stability, and resistance to distortion. Every GT rotor is fully detail machined to eliminate stress points and unnecessary weight away from the pad sweep face. The faces and O.D. are precision turned to less than .001" for flatness, parallelism, and run-out. An asymmetrical face slot pattern provides smoother engagement through reduced harmonics and improved thermal balance between the I.D. and O.D. of the rotor. Every rotor is then individually dynamic balanced to provide vibration free performance at any speed. These rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition. View GT Rotors
Ultralite HP 32 Curved Vane Rotor


Rotor Dimensions
Rotor Diameter Range 12.19
Rotor Width Range 1.25

Ultralite HP 32 Curved Vane Rotor Rotors

Ultra-Light ULHP-32 directional vane rotors provide an excellent balance of efficient cooling and lower rotating mass on hard braking dirt tracks or rear axle service on pavement cars. UL rotors are cast from premium grade, long grain carbon iron for long wear, high thermal stability, and resistance to distortion. ULHP-32 rotors offered the added performance and smoother operation of precision turned faces with less than .001" variation in flatness, parallelism, or run-out. View Ultralite Rotors

 
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Version: 3.05 June 23, 2023