Products to Compare (max of 3)
X
Compare
ALWAYS SECURE
America's Oldest Speed Shop ® 800.979.0122 Lincoln, NE
Filters
Menu
Contact
Help Center
x
x
How to Contact Us

U.S.Order Line:

800.979.0122

(CST) 7am - 10pm

Race and Rod Tech Support

Mon-Fri 8am - 5pm

Canadian Order Line:

855.313.9180

International Order Line:

1.402.323.3200
Since 1952
Menu
x

AFCO 9850-6500 GM Metric Style Brake Rotors 1979 and Up, 5 x 5 Inch

Specs
Sold in Quantity:
Each
Bolt Pattern:
5 on 5"
Finish:
Natural
Rotor Diameter:
10.50
Rotor Construction:
Vented
Material Type:
Cast Iron
Rotor Location:
Front
Rotor Shape:
Round
Thread Pitch:
5/8"-11
MFG. Part #:
9850-6500
Garage Sale:
No
Drilled:
No
Slotted:
No
Stud Length:
2.06
Stud Diameter:
0.63
Rotor Thickness:
1.00
Notes
Drilled to fit 5" on 4.75" also.
AFCO 9850-6500 GM Metric Style Brake Rotors 1979 and Up, 5 x 5 Inch

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

These AFCO brake rotors are specifically designed for dirt track applications (not for use on asphalt). They meet OEM sanctioning requirements for Modifieds, Street Stocks, and Hobby Stocks.

  • Wheel studs installed
  • Stock-appearing
  • 10.4" diameter x 1" thickness
  • Races installed
  • Pre-drilled with 5 x 5" pattern

Instructions (PDF)

Item Details

5/8" Coarse studs

Customer Reviews

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

Bob
Verified Purchaser
Albuquerque, NM

US-Brake-GM Metric 5 on 5

August 04, 2012
Fit perfectly and works well.
Pros:
  • Easy To Install
Yes, I recommend this product.
Full Size Image

Was this review helpful? 0 0

Page 1 of 1

Product Q&A

5 questions : 5 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

how much does it weigh?

slick50
December 01, 2014

how much does it weigh?

Answers

December 01, 2014
EricM
This rotor has a shipping weight of 17.7 pounds.
1 answers

does this rotor line up in the same position as a metric monte carlo rotor

racingallovertheworld
February 10, 2014

does this rotor line up in the same position as a metric monte carlo rotor

Answers

February 11, 2014
EricM
Yes this is a replacement for a 79 and up Metric Monte Carlo and other G body cars but this rotor has a 5 on 5" bolt pattern with 5/8" studs.
1 answers

Description says 5 x 5inch but specs say dual 5x5,4 3/4. Which one is it? I have 5 x 4 3/4.

gofastturnrightgoleft
February 27, 2013

Description says 5 x 5inch but specs say dual 5x5,4 3/4. Which one is it? I have 5 x 4 3/4.

Answers

February 28, 2013
Jason
This rotor is assembled with 5/8" coarse studs on a 5 on 5" bolt pattern. It also has the 5 on 4-3/4" pattern drilled. To assemble the rotor with 5/8" studs on a 5 on 4-3/4" pattern you will need to enlarge the drilled holes to accept the larger studs.
1 answers

I need the studs for this part

Donnie
Verona. KY
May 13, 2015

I need the studs for this part

Answers

May 14, 2015
Eric
Expert
Studs 10610164 can be used as a replacement stud for this rotor.
Page 1 of 1

You may also be interested in:

Speedway 1979-Up GM Metric Brake Rotor
(Part #91031061)
                        

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"
AFCO 9851-8550 GM Rotor Master Install Kit
(Part #10698518550)
                        

Get the master install kit or individual accessories!  Master Install Kit Includes:

  • Bearings
  • Seal
  • Washer
  • Nut
  • Pin
  • Dust Cap
Wilwood 160-9239 HP Modified Hub/Rotor, Vented w/Studs, 10.50 Inch
(Part #8351609239)
                        
  • New castings
  • Exact tolerances
  • Come standard with races and 5/8” coarse wheel studs installed
  • 5 on 5” bolt pattern
  • GM Metric rotor is 10.50” diameter by 1.00” thick and fits the 1979 and up GM spindles
1979-Up GM Metric Brake Rotor, 5 on 4-3/4 In, 5/8-11 In Coarse Studs
(Part #91031091)
                        
This 1979-up GM Metric front disc brake rotor will work with a Set # 6 inner bearing/race which fits most spindles. 5 on 4-3/4" with 5/8"-11 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 4-3/4". It can be used on 1982-1987 GM metric spindles if 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.

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.
DRP 007 10521S 1979-Up GM Metric Spindle Pre-Load Bearing Spacers
(Part #91031033)
                        
  • Designed to fit '79-up GM Metric spindles
  • Allows your front hubs to be tight with minimal drag and side pre-load
  • Easy adjust threaded sleeve and set screw ensure you'll never worry about an over-tightened front hub again
  • Sold each
Wheel Stud Drill Bit
(Part #91082007)
                        

43/64" wheel stud drill bit with 1/2" shank. Used to drill out hubs and axle flanges for 5/8" wheel studs with .685 knurl diameter.