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800.979.0122

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Mon-Fri 8am - 5pm

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855.313.9180

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Since 1952
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Speedway 1979-Up GM Metric Brake Rotor

SAME DAY SHIPPING! Order within the next 13 hours 25 minutes and receive same day shipping

Specs
Material Type:
Cast Iron
Weight:
18.15
Sold in Quantity:
Each
Finish:
Natural
Bolt Pattern:
5 on 5"
Stud Length:
2.32
Stud Diameter:
0.63
Thread Pitch:
5/8"-11
Rotor Diameter:
10.50
MFG. Part #:
910-31061
Rotor Thickness:
1.00
Rotor Construction:
Vented
Garage Sale:
No
Rotor Location:
Front
Rotor Shape:
Round
Drilled:
No
Slotted:
No
Notes
Designed for dirt track applications.
Speedway 1979-Up GM Metric Brake Rotor

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

This 1979-up GM Metric front disc brake rotor will work with a Set # 6 inner bearing/race which fits most spindles. 5 on 5" with 5/8" coarse studs installed. 10.5" diameter x 1".  Must be used with 912-TS3 outer bearings for 1982-1987 spindle applications.  IMCA Approved.

This is a 1979-1981 Metric GM rotor with the bolt pattern changed to 5 on 5". It can be used on 1982-1987 GM metric spindles if the you use our bearing/seal kit 91031048, or use at least the 1979-1981 style outer bearing 912TS3.

This rotor is designed for dirt track applications and should NOT be used for asphalt racing.




 

Item Details

5 on 5"

Notes

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. 

Customer Reviews

Rated 5 out of 5 by 3 reviewers.
RATING BREAKDOWN
3 reviews
5 Stars
3
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Matt77
Verified Purchaser
West Terre Haute, IN, USA

Very affordable

February 17, 2015
This is a very affordable part and price for these. Cheaper than other part stores or magazines.
Pros:
  • Very affordable
Yes, I recommend this product.
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Was this review helpful? 0 0

Wagon0

Amazing product

September 30, 2013
Bought a set to convert front end to 5x5 on my car was super easy install and very well made.
Yes, I recommend this product.
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Was this review helpful? 0 0

modman
Verified Purchaser
medford oregon

I would perchase again

May 11, 2012
was very impressed with the way item was shipped well protected
Pros:
  • Easy To Install
Yes, I recommend this product.
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Was this review helpful? 0 0

Page 1 of 1

Product Q&A

3 questions : 3 answers

1 answers

Why cant these be used for asphalt racing?? 1/3 mile asphalt tracks

EM60
March 09, 2015

Why cant these be used for asphalt racing?? 1/3 mile asphalt tracks

Answers

March 09, 2015
EricM
These rotors are nothing more than a stock replacement rotor with larger studs installed. Typically asphalt racing will destroy a stock type cast iron rotor such as this, especially on the right front. Billet steel hubs are typically required for asphalt applications.
1 answers

do these come with 4 3/4 bolt pateren

hauckster
October 28, 2013

do these come with 4 3/4 bolt pateren

Answers

October 29, 2013
Jason
Sorry, at this time we only offer the 1979 and later GM metric rotor with 5 on 5" bolt pattern.
1 answers

will this rotor fit a 1986 G body spindle?

May 17, 2011

will this rotor fit a 1986 G body spindle?

Answers

May 17, 2011
Jason
Yes, but you will need to buy bearing kit 91031048 to make it work
Page 1 of 1

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Notes

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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