Hat (Bell) Mount Rotors
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Drilled Steel Rotor
Rotor Diameter: 10.00
Rotor Width: 0.25
Rotor Bolt Circle(s): 5 x 5.00
Material: Steel
Drilled Steel Rotor

Drilled Steel Rotor Drawing Drilled Steel Rotor Drawing Zoom Image

Drilled Steel Rotor Description

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.
NOTE & CAUTIONS:
Suitable applications: Drag / Dirt racing

Ordering Information for Drilled Steel Rotor
Item No 160-1602
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 4.10
Far Side I.D.
Price $164.49
Purchase
Call (805) 388-1188

Drilled Steel Rotor
Rotor Diameter: 10.00
Rotor Width: 0.32
Rotor Bolt Circle(s): 5 x 3.88
Material: Steel
Drilled Steel Rotor

Drilled Steel Rotor Drawing Drilled Steel Rotor Drawing Zoom Image

Drilled Steel Rotor Description

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.
NOTE & CAUTIONS:
Suitable applications: Drag Racing

Ordering Information for Drilled Steel Rotor
Item No 160-2182
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 3.12
Far Side I.D.
Price $123.39
Purchase
Call (805) 388-1188

Aluminum Sprint / Midget Rotor-3H
Rotor Diameter: 10.20
Rotor Width: 0.31
Rotor Bolt Circle(s): 3 x 5.00
Material: Aluminum
Aluminum Sprint / Midget Rotor-3H

Aluminum Sprint / Midget Rotor-3H Drawing Aluminum Sprint / Midget Rotor-3H Drawing Zoom Image

Aluminum Sprint / Midget Rotor-3H Description

Wilwood’s New Type III hard-anodized aluminum rotor finish improves performance and increases life over all other aluminum rotors. Precision CNC machined from high strength billet, full symmetrical machining provides perfect balance, flatness, and the truest rotation of any rotor made. This 10.20 rotor fits the 3 x 5.00" mount bolt circle for Sprint Car and Midget front hubs.

Wilwood’s specifically engineered drilled pattern for each rotor, along with Type III hard-anodized aluminum, combines the greatest weight reduction with the highest resistance to thermal distortion. This design’s low knock-back characteristics give lap after lap of smooth engagement and a consistent full pedal. For best results, use Purple compound brake pads with these rotors.

  • Hard-anodized for greater friction and longer life than other aluminum rotors
  • Lowest thermal distortion and run-out of any aluminum rotors
  • Withstands higher heat than competitor’s aluminum rotors

NOTE & CAUTIONS:
Unsafe for street use & unsuitable for most forms of Racing.

Ordering Information for Aluminum Sprint / Midget Rotor-3H
Item No 160-3411A
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 3.88
Far Side I.D.
Price $98.73
Purchase
Call (805) 388-1188

Super Alloy Slotted Rotor
Rotor Diameter: 10.20
Rotor Width: 0.31
Rotor Bolt Circle(s): 3 x 5.00
Material: Titanium
Super Alloy Slotted Rotor

Super Alloy Slotted Rotor Drawing Super Alloy Slotted Rotor Drawing

Super Alloy Slotted Rotor Description

Super Alloy treated titanium rotors show improved toughness, increased life, better low-temperature friction, and less high-temperature creep and distortion on wing and non-wing 410 Sprint cars. Wilwood titanium slotted rotors are Sprint racing's longest-wearing lightweight rotors at less than 3 pounds. This 10.20” rotor fits the 3 x 5.00” mount bolt circle for Sprint Car and Midget front hubs.

Wilwood's proprietary treated Super Alloy titanium dramatically enhances this rotor's durability and lifespan over comparable lightweight rotors. Less unsprung weight and rotating mass improves acceleration and handling. The improved slotted surface design allows for fuller pad contact and is engineered for excellent high-temperature stability, with consistent performance and pedal feel.

  • Slot design promotes even heat dissipation and improved wear
  • Treated Super Alloy titanium has less distortion and dramatically increased life
  • Fine micro-finish beds in new pads quickly for optimal friction and wear

NOTE & CAUTIONS:
Only for Dirt Sprint Car and Midget left front use.

Ordering Information for Super Alloy Slotted Rotor
Item No 160-16113
Info Details
Rotor Style Slotted
Bedded N
Lug I.D. 3.88
Far Side I.D.
Price $763.88
Purchase
Call (805) 388-1188

Aluminum Sprint / Midget Rotor-42T
Rotor Diameter: 10.20
Rotor Width: 0.31
Rotor Bolt Circle(s): 42 Tooth
Material: Aluminum
Aluminum Sprint / Midget Rotor-42T

Aluminum Sprint / Midget Rotor-42T Drawing Aluminum Sprint / Midget Rotor-42T Drawing Zoom Image

Aluminum Sprint / Midget Rotor-42T Description

Wlwood’s New Type III hard-anodized aluminum rotor finish improves performance and increases life over all other aluminum rotors. Precision CNC machined from high strength billet, full symmetrical machining provides perfect balance, flatness, and the truest rotation of any rotor made. This 10.20" rotor mounts directly outboard on 42 spline 2.75" Sprint Car axles.

Wilwood’s specifically engineered drilled pattern for each rotor, along with Type III hard-anodized aluminum, combines the greatest weight reduction with the highest resistance to thermal distortion. This design’s low knock-back characteristics give lap after lap of smooth engagement and a consistent full pedal. For best results, use Purple compound brake pads with these rotors.

  • Hard-anodized for greater friction and longer life than other aluminum rotors
  • Lowest thermal distortion and run-out of any aluminum rotors
  • Withstands higher heat than competitor’s aluminum rotors

NOTE & CAUTIONS:
Unsafe for street use & unsuitable for most forms of Racing.

Ordering Information for Aluminum Sprint / Midget Rotor-42T
Item No 160-3270A
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 2.69
Far Side I.D.
Price $115.36
Purchase
Call (805) 388-1188

Ultralite 30 Vane Rotor
Rotor Diameter: 10.25
Rotor Width: 0.75
Rotor Bolt Circle(s): 6 x 5.50
Material: Iron
Ultralite 30 Vane Rotor

Ultralite 30 Vane Rotor Drawing Ultralite 30 Vane Rotor Drawing Zoom Image

Ultralite 30 Vane Rotor Description

Ultra-Light UL 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.
NOTE & CAUTIONS:
Premium grade, medium weight castings.

Ordering Information for Ultralite 30 Vane Rotor
Item No 160-3747
Info Details
Rotor Style Plain Face
Bedded N
Lug I.D. 4.94
Far Side I.D. 6.75
Price $108.19
Purchase
Call (805) 388-1188

Super Alloy Scalloped Rotor
Rotor Diameter: 10.50
Rotor Width: 0.16
Rotor Bolt Circle(s): 9 x 7.00
Material: Super Alloy
Super Alloy Scalloped Rotor

Super Alloy Scalloped Rotor Drawing Super Alloy Scalloped Rotor Drawing Zoom Image

Super Alloy Scalloped Rotor Description

Super Alloy Steel 10.50” x .16” Solid Rotors are one of Sprint racing's lightest rotor at a weight of only 1.40 pounds. Wilwood’s proprietary Super Alloy Steel greatly enhances the durability and lifespan of this rotor over comparable lightweight steel or aluminum rotors. A Drilled and scalloped design provides excellent high temperature stability, rapid heat dissipation, and consistent performance from the brake pads. The fine micro-finish surface beds quickly with new pads. It provides a cost effective, lightweight solution with quick response, long service life from the pads, and consistent braking at all temperatures.. Lowered rotating weight promotes quick acceleration, deceleration, and improved handling.
NOTE & CAUTIONS:
Dirt Sprint car L/F or R/R use

Ordering Information for Super Alloy Scalloped Rotor
Item No 160-10717
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 6.50
Far Side I.D.
Price $199.24
Purchase
Call (805) 388-1188

Drilled Steel Rotor
Rotor Diameter: 10.50
Rotor Width: 0.35
Rotor Bolt Circle(s): 6 x 5.50
Material: Steel
Drilled Steel Rotor

Drilled Steel Rotor Drawing Drilled Steel Rotor Drawing Zoom Image

Drilled Steel Rotor Description

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.
NOTE & CAUTIONS:
Suitable applications: Light Asphalt & Dirt Racing

Ordering Information for Drilled Steel Rotor
Item No 160-3455
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 4.94
Far Side I.D.
Price $123.39
Purchase
Call (805) 388-1188

SRP Drilled Performance Rotor
Rotor Diameter: 10.50
Rotor Width: 0.75
Rotor Bolt Circle(s): 6 x 5.50
Material: Iron
SRP Drilled Performance Rotor

SRP Drilled Performance Rotor Drawing SRP Drilled Performance Rotor Drawing Zoom Image

SRP Drilled Performance Rotor Description

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.
NOTE & CAUTIONS:


Ordering Information for SRP Drilled Performance Rotor
Item No 160-9249-BK
Info Details
Rotor Style SRP Drilled & Slotted
Bedded N
Lug I.D. 4.94
Far Side I.D. 6.75
Price $213.52
Purchase
Call (805) 388-1188
Item No 160-9250-BK
Info Details
Rotor Style SRP Drilled & Slotted
Bedded N
Lug I.D. 4.94
Far Side I.D. 6.75
Price $213.52
Purchase
Call (805) 388-1188

Ultralite 30 Vane Rotor
Rotor Diameter: 10.50
Rotor Width: 0.75
Rotor Bolt Circle(s): 6 x 5.50
Material: Iron
Ultralite 30 Vane Rotor

Ultralite 30 Vane Rotor Drawing Ultralite 30 Vane Rotor Drawing Zoom Image

Ultralite 30 Vane Rotor Description

Ultra-Light UL 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.
NOTE & CAUTIONS:
Premium grade, medium weight castings.

Ordering Information for Ultralite 30 Vane Rotor
Item No 160-3450
Info Details
Rotor Style Plain Face
Bedded N
Lug I.D. 4.94
Far Side I.D. 6.75
Price $108.19
Purchase
Call (805) 388-1188

Ultralite 30 Vane Scalloped Rotor
Rotor Diameter: 10.50
Rotor Width: 0.75
Rotor Bolt Circle(s): 6 x 5.50
Material: Iron
Ultralite 30 Vane Scalloped Rotor

Ultralite 30 Vane Scalloped Rotor Drawing Ultralite 30 Vane Scalloped Rotor Drawing Zoom Image

Ultralite 30 Vane Scalloped Rotor Description

When it comes to rotors, racers are constantly searching for the ultimate balance between the lowest weight and the ability to effectively manage heat. Decreased rotating weight in the drive line provides quicker deceleration under braking and quicker acceleration out of the corners. Lower weight also benefits handling with improved spring and shock control over the unsprung suspension mass. Wilwood's ULS-32 scalloped iron rotors provides effective lightweight options for sprints, late models, modifieds, and other competition applications that race in low to medium temperature ranges.
NOTE & CAUTIONS:
Suitable applications: Dirt Sprint / Midget Racing

Ordering Information for Ultralite 30 Vane Scalloped Rotor
Item No 160-8427
Info Details
Rotor Style Plain Face
Bedded N
Lug I.D. 4.94
Far Side I.D. 7.30
Price $159.07
Purchase
Call (805) 388-1188

Super Alloy Scalloped Rotor
Rotor Diameter: 10.50
Rotor Width: 0.78
Rotor Bolt Circle(s): 6 x 5.50
Material: Super Alloy
Super Alloy Scalloped Rotor

Super Alloy Scalloped Rotor Drawing Super Alloy Scalloped Rotor Drawing Zoom Image

Super Alloy Scalloped Rotor Description

Super Alloy Steel 10.50” x .780” Vented Rotors are one of Sprint racing's lightest .750" to .810" thickness class rotor at a weight of only 3.20 pounds. Wilwood's proprietary Super Alloy Steel greatly enhances the durability and lifespan of this rotor over comparable lightweight steel or iron rotors. A Drilled, slotted, and scalloped design with 24 cooling vanes provides excellent high temperature stability, rapid heat dissipation, and consistent performance from the brake pads.
NOTE & CAUTIONS:
Dirt Sprint Car Inboard Use.

Ordering Information for Super Alloy Scalloped Rotor
Item No 160-11217
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 4.94
Far Side I.D. 7.30
Price $249.42
Purchase
Call (805) 388-1188

Drilled Steel Rotor
Rotor Diameter: 10.75
Rotor Width: 0.35
Rotor Bolt Circle(s): 6 x 6.25
Material: Steel
Drilled Steel Rotor

Drilled Steel Rotor Drawing Drilled Steel Rotor Drawing Zoom Image

Drilled Steel Rotor Description

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.
NOTE & CAUTIONS:
Suitable applications: Drag Racing

Ordering Information for Drilled Steel Rotor
Item No 160-3306
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 5.59
Far Side I.D.
Price $123.39
Purchase
Call (805) 388-1188

SRP Drilled Performance Rotor
Rotor Diameter: 10.75
Rotor Width: 0.81
Rotor Bolt Circle(s): 6 x 6.25
Material: Iron
SRP Drilled Performance Rotor

SRP Drilled Performance Rotor Drawing SRP Drilled Performance Rotor Drawing Zoom Image

SRP Drilled Performance Rotor Description

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.
NOTE & CAUTIONS:
Premium grade, medium weight castings.

Ordering Information for SRP Drilled Performance Rotor
Item No 160-7097-BK
Info Details
Rotor Style SRP Drilled & Slotted
Bedded N
Lug I.D. 5.59
Far Side I.D. 7.00
Price $213.52
Purchase
Call (805) 388-1188
Item No 160-7098-BK
Info Details
Rotor Style SRP Drilled & Slotted
Bedded N
Lug I.D. 5.59
Far Side I.D. 7.00
Price $213.52
Purchase
Call (805) 388-1188

Ultralite HP 30 Vane Rotor
Rotor Diameter: 10.75
Rotor Width: 0.81
Rotor Bolt Circle(s): 6 x 6.25
Material: Iron
Ultralite HP 30 Vane Rotor

Ultralite HP 30 Vane Rotor Drawing Ultralite HP 30 Vane Rotor Drawing Zoom Image

Ultralite HP 30 Vane Rotor Description

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.
NOTE & CAUTIONS:
Premium grade, medium weight castings.

Ordering Information for Ultralite HP 30 Vane Rotor
Item No 160-5839
Info Details
Rotor Style Plain Face
Bedded N
Lug I.D. 5.59
Far Side I.D. 7.00
Price $126.90
Purchase
Call (805) 388-1188

Aluminum Sprint / Midget Rotor-3H
Rotor Diameter: 10.95
Rotor Width: 0.31
Rotor Bolt Circle(s): 3 x 5.00
Material: Aluminum
Aluminum Sprint / Midget Rotor-3H

Aluminum Sprint / Midget Rotor-3H Drawing Aluminum Sprint / Midget Rotor-3H Drawing Zoom Image

Aluminum Sprint / Midget Rotor-3H Description

Wilwood’s New Type III hard-anodized aluminum rotor finish improves performance and increases life over all other aluminum rotors. Precision CNC machined from high strength billet, full symmetrical machining provides perfect balance, flatness, and the truest rotation of any rotor made. This 10.95 rotor fits the 3 x 5.00" mount bolt circle for Sprint Car and Midget front hubs.

Wilwood’s specifically engineered drilled pattern for each rotor, along with Type III hard-anodized aluminum, combines the greatest weight reduction with the highest resistance to thermal distortion. This design’s low knock-back characteristics give lap after lap of smooth engagement and a consistent full pedal. For best results, use Purple compound brake pads with these rotors.

  • Hard-anodized for greater friction and longer life than other aluminum rotors
  • Lowest thermal distortion and run-out of any aluminum rotors
  • Withstands higher heat than competitor’s aluminum rotors

NOTE & CAUTIONS:
Unsafe for street use & unsuitable for most forms of Racing.

Ordering Information for Aluminum Sprint / Midget Rotor-3H
Item No 160-3327A
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 3.88
Far Side I.D.
Price $98.73
Purchase
Call (805) 388-1188

Drilled Steel Rotor
Rotor Diameter: 10.95
Rotor Width: 0.31
Rotor Bolt Circle(s): 3 x 5.00
Material: Steel
Drilled Steel Rotor

Drilled Steel Rotor Drawing Drilled Steel Rotor Drawing Zoom Image

Drilled Steel Rotor Description

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.
NOTE & CAUTIONS:
Suitable applications: Dirt Racing

Ordering Information for Drilled Steel Rotor
Item No 160-2084
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 4.10
Far Side I.D.
Price $123.39
Purchase
Call (805) 388-1188

Drilled Steel Scalloped Rotor
Rotor Diameter: 11.00
Rotor Width: 0.31
Rotor Bolt Circle(s): 3 x 5.00
Material: Steel
Drilled Steel Scalloped Rotor

Drilled Steel Scalloped Rotor Drawing Drilled Steel Scalloped Rotor Drawing Zoom Image

Drilled Steel Scalloped Rotor Description

Wilwoods Scalloped Steel 3 hole mount rotors are precision machined from special alloy. Proprietary manufacturing processes give these rotors high resistance to thermal distortion with excellent friction and wear characteristics against the pads. These rotors fit the popular 3 x 5.00" mount bolt circle on sprint and midget front hubs.
NOTE & CAUTIONS:
Suitable applications: Dirt Racing

Ordering Information for Drilled Steel Scalloped Rotor
Item No 160-10475
Info Details
Rotor Style Drilled
Bedded N
Lug I.D. 4.10
Far Side I.D.
Price $106.45
Purchase
Call (805) 388-1188

GT 72 Straight Vane Rotor
Rotor Diameter: 11.00
Rotor Width: 0.81
Rotor Bolt Circle(s): 6 x 6.25
Material: Spec-37 Iron
GT 72 Straight Vane Rotor

GT 72 Straight Vane Rotor Drawing GT 72 Straight Vane Rotor Drawing Zoom Image

GT 72 Straight Vane Rotor Description

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.
NOTE & CAUTIONS:
Premium grade, Heavy weight castings.

Ordering Information for GT 72 Straight Vane Rotor
Item No 160-12892
Info Details
Rotor Style GT Slotted
Bedded N
Lug I.D. 5.59
Far Side I.D. 7.42
Price $140.26
Purchase
Call (805) 388-1188

SRP Drilled Performance Rotor
Rotor Diameter: 11.00
Rotor Width: 0.81
Rotor Bolt Circle(s): 6 x 6.25
Material: Iron
SRP Drilled Performance Rotor

SRP Drilled Performance Rotor Drawing SRP Drilled Performance Rotor Drawing Zoom Image

SRP Drilled Performance Rotor Description

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.
NOTE & CAUTIONS:
Premium grade, medium weight castings.

Ordering Information for SRP Drilled Performance Rotor