Pro-Lite Vented Brake Rotor, 12.19 x .81 Inch

#91031908

Pro-Lite Vented Brake Rotor, 12.19 x .81 Inch

Name: Pro-Lite Vented Brake Rotor, 12.19 x .81 Inch
Brand: Speedway Motors
SKU: 91031908
Price: 38.99 USD
Availability: InStock
Rating: 4.9 (7 reviews)

7 Reviews

2 Questions

32 vane casting provides superior heat management and long service life
Rotor Hat Bolt Pattern: 8 x 7.00"
Thru thread

Outside Diameter / Thickness:

12.19" x 0.810"

11.75" x 0.810"11.75" x 1.25"11.75" x 0.810" (Pair)

$38.99

/each

In Stock

Quantity

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Product Summary

Rear Position, Round Rotor Shape, Vented Rotor Type

32 vane casting provides superior heat management and long service life
Rotor Hat Bolt Pattern: 8 x 7.00"
Thru thread
Cast from premium grade, long grain carbon iron
Rotor Thickness: 0.82"

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Key Specs

Rotor Diameter	12.19 Inch
Rotor Style	Plain Face
Rotor Material Type	Cast Iron
Rotor Thickness	0.82"
Rotor Hat Bolt Pattern	8 x 7.00"

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Need To Know

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Installation Details

Installation Tips

Proper Break-In Procedure for Steel or Cast Iron Rotors

New steel/iron rotors should be bedded in before being used in racing conditions. Proper bedding will prepare the rotor surface, prolong the rotor's life, and make it more resistant to thermal checking or cracking under severe braking conditions. The following procedures should be performed when bedding in both steel and cast iron rotors. It is best to bed in a new rotor using a used set of pads, preferably ones which will not create heat rapidly. Generating heat too rapidly will thermal shock the rotors. Likewise, when bedding in a new set of brake pads it is best to perform the process on a used rotor. This new/used bedding process permits controlled bedding of each individual component.

Make sure rotor surfaces are free from oils, grease, and brake fluid. Run vehicle up to a moderate speed and make several medium deceleration stops to heat up the rotor slowly. This will help reduce the chance of thermal shock caused by uneven heating of the rotor. Pull into the pits and allow the rotor to cool to ambient air temperature. Care should be taken not to ride the brakes into the pits as this may hot spot the rotor causing premature wear to the surface or structural damage.

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Speedway Motors 91031908 Details

Every brake rotor is cast from premium grade, long grain carbon iron which exhibits long wear, high thermal stability, and excellent resistance to distortion in high heat. Modern foundry and machining techniques hold close tolerances on face and vane thickness. Combining the correct face thickness with a 32 vane casting provides superior heat management and long service life with low rotating and unsprung weight. The straight vane design also makes it possible to use the same disc brake rotor on left or right hand mounting locations.

Thickness: .81"
Outside Diameter: 12.19"
# Holes: 8
Bolt Circle: 7"
Thread: Thru
Weight: 8.70 lbs

IMCA Approved.

Charts

Pro-Lite Rotor Application Chart (GIF)

Guides & Documents

Brake Rotors Technical Information (91031908)

CA Prop 65

Speedway Motors 91031908 Specifications

KEY SPECS
MFG. Part #	91031908
Brand	Speedway Motors
Rotor Diameter	12.19 Inch
Rotor Style	Plain Face
Rotor Material Type	Cast Iron
Rotor Thickness	0.82"
Rotor Hat Bolt Pattern	8 x 7.00"

GENERAL
Position	Rear
Rotor Shape	Round
Rotor Type	Vented
Rotor Finish	Plain
Weight	8.7 lbs.
Sold in Quantity	Each

Ratings & Reviews

4.9

7 Reviews

Overall Assessment

Customers highly value our brake rotors for their affordability, quality, performance, and longevity. They appreciate the brake's excellent fit and durability, even in off-road competition trucks and vintage vehicles. The rotors outperform comparable options in the market, both in cost and quality, hence customers are satisfied with their value for money. Their long-lasting quality earns the ultimate customer approval, with one customer stating the rotors will outlast them. In comparison to more expensive alternatives, customers find no compromise in the rotors' quality, making them the top choice.

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4.9

7 reviews

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Products looks great

5.0

7 months ago

AN Hawkins

Ohio

Verified

High quality part you expect from Speedway

Would Recommend

Fit perfectly on the Ford 9" rear end and G-Comp hubs

5.0

a year ago

Tess Tichols

Utah

Verified

I put these on a 1968 Camaro along with the G-Comp rear torque arm suspension. Perfect fit, clean install. And they stop stuff. I hope.

Affordable stopping for the aged!

5.0

8 years ago

Ol Yeller

Camp Meeker, CA

Verified

Bolted these to the stock hubs on my 59 8 lug Stovebolt

Would Recommend

Great product - cost effective!!

5.0

8 years ago

Offroader

Lake Elsinore CA

Verified

I use this brake rotors on both my competition offroad trucks. They are extremely affordable without giving up performance

Would Recommend

Top quality rotor

5.0

10 years ago

Sky

Boise, Idaho

Verified

I have used these rotors for years. Never have had a problem with them. These are going on a vintage short track roadster. They will last longer than I will.

Would Recommend

Awesome product!

5.0

10 years ago

Turtle momma

Peru, KS

Verified

great product, great fit, great price received very quickly

Would Recommend

Quality product good price

4.0

16 years ago

VWHammer

Athens, Ohio

I can't find a single reason why these are so cheap. I have purchased similar rotors from other companies and they cost twice the price of these units.

Would Recommend

Showing 7 of 7 reviews

Questions & Answers

2 Questions • 2 Answers

Sort Questions

What is the inside diameter of the flange where it bolts on

by Cheeseburger

• 9 years ago

1 answer

View Answer

Do you sell weld-on caliper brackets for this size rotor? I'd like to use these rotors on a Ford 9" floater with a GM metric caliper.

by 68Firebird

• 12 years ago

1 answer

View Answer

2 of 2 questions shown