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#91031040
2-3/4 Inch Big Bore 1978-88 GM Metric Brake Caliper
- Bleeder and inlet are both 10mm - 1.5 inlet allowing the caliper to be used on either side
- Includes pads and caliper slide bolts - no extra parts to buy
- Extra ribs have been added internally while unnecessary weight was removed to make the most rigid yet light weight caliper
$105.99
/each
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Product Summary
82-02 Chevy S10, 82-90 GMC S15, Oval Track Cars
- Bleeder and inlet are both 10mm - 1.5 inlet allowing the caliper to be used on either side
- Includes pads and caliper slide bolts - no extra parts to buy
- Extra ribs have been added internally while unnecessary weight was removed to make the most rigid yet light weight caliper
- 2-3/4" piston is a 20% increase in stopping power over stock calipers
- Can used on the left and right sides
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Speedway Motors 91031040 Details
If you are using 1978-88 GM Metric style brake calipers your choices of piston sizes are pretty much limited to 2-1/2". This isn't bad unless you want to 'tune' your braking by using different size calipers front to rear. By using a larger 2-3/4" piston you will increase the braking force at a wheel over a wheel using a smaller piston.
Bleeder and inlet are both 10mm-1.5 inlet allowing the caliper to be used on either side. Plus, these calipers have been ground smooth to make them easier to paint.
Includes pads and hardware. Sold as EACH.
- 20% increase in stopping power over stock calipers
- Can used on the left and right sides
- Extra ribs have been added internally while unnecessary weight was removed
- Lighter, stronger, has more stopping power than OEM calipers
- Utilizes GM metric style D154 brake pads
- Each caliper includes:
- brake pads
- slide pins
- banjo bolt
- washers
- bleeder screw
Speedway Motors 91031040 Specifications
Speedway Motors 91031040 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031040 |
| Brand | Speedway Motors |
| Caliper Pistons | One |
| Material Type | Steel |
| GENERAL | |
| Piston Diameter | 2.75" |
| Sold in Quantity | Each |
| Bore Size | 2.75" |
| Centerline of Holes | 5.50" |
| Rotor Thickness | 1.00" |
| Finish | Natural |
Ratings & Reviews
4.8
35 Reviews
Customers appreciate the superior stopping power the brake calipers offer due to their large bore size, noticeably improving their vehicles' safety. Many note an easy installation and substantial improvement in braking, even without power assistance. Customers highlight the product’s compatibility with different cars, from vintage models to street racers, and the impact on front brake bias. Quality construction, addition of pads and bolts, corrosion-resistant coating, and the product’s ability to be painted received positive mention. It’s a well-priced, effective upgrade from standard and OEM products and provides an excellent performance for its price.
Ratings & Reviews
4.8
35 Reviews
Customers appreciate the superior stopping power the brake calipers offer due to their large bore size, noticeably improving their vehicles' safety. Many note an easy installation and substantial improvement in braking, even without power assistance. Customers highlight the product’s compatibility with different cars, from vintage models to street racers, and the impact on front brake bias. Quality construction, addition of pads and bolts, corrosion-resistant coating, and the product’s ability to be painted received positive mention. It’s a well-priced, effective upgrade from standard and OEM products and provides an excellent performance for its price.
4.8
35 reviews
5
31
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Most Liked Positive Review
5.0
Big Bore Caliper a pleasant surprise.
Perfect upgrade for my disc brake project, quality is there, paintable after etching the zinc plating...
Most Liked Negative Review
2.0
Calipers leaked
I tighten banjo to torque specs and calipers leaked i tried over tighten them and they still leaked
Filter by Ratings
Yes I would buy this product again.
5.0
3 months ago
moneypit1961
Courtice Ontario Canada
Verified
I replaced the original 2 3/8 calipers on my mustang 11 front suspension in my 33 Ford. Brakes were always just ok, could never lock up the wheels in a panic stop. I increased the master cylinder size from 7/8 to 1" and installed these 2 3/4" calipers. I now have a firmer, higher pedal and I can lock up the wheels. Not that I want to but I'm able to. And with a little grinding I was able to reinstall my 14" wheels. I am an NSRA safety team inspector so I was careful how much (little) I ground off the slide bolt ears. Very satisfied with the results.
Would Recommend
Perfect OEM update.
5.0
8 months ago
Richie
Los Angeles, CA
Verified
Swapped out both front calipers on my 02 2wd s10. Parts bolted right on and included brand new hardware to attach them AND PADS also. They are definitely bigger and better than the stock equipment.
Would Recommend
Calipers leaked
2.0
a year ago
G Body
Eastpointe Mi
Verified
I tighten banjo to torque specs and calipers leaked i tried over tighten them and they still leaked
Would Not Recommend
I would buy again
4.0
a year ago
Colt
Des monies IA
Verified
Quick to insult
Would Recommend
Good for rear disc conversion squarebody
5.0
a year ago
Ew
Middleton, ID
Verified
Put these on the back of my 87 burb. Bigger piston than the standard Cadillac calipers, got my F/R ratio where I want it.
Would Recommend
I will be purchasing this product again
5.0
2 years ago
Nate
Idaho
Verified
The build quality seems to be quite good and the part appears like they will be an upgraded part for my application.
Would Recommend
I would buy this product again.
5.0
2 years ago
JK
Chattanooga TN
Verified
Used these calipers on a 1993 S10 Blazer. I can tell a big difference in stopping power.
Would Recommend
I will buy again
5.0
2 years ago
HotRod
Ohio
Verified
1935 Ford
Would Recommend
nice stuff nice finish
5.0
2 years ago
ferg
dover pa
Verified
every thing went well
Would Recommend
Noticeable difference in stopping power
5.0
3 years ago
Gcpoland
Kingston,NH
Easy to install if you already use metric calipers. Once pads are bedded in, the stopping distance is noticeably less. New vs reman calipers should last for awhile.
Would Recommend
Showing 10 of 35 reviews
Questions & Answers
23 Questions • 18 Answers
Questions & Answers
23 Questions • 18 Answers
What size are the crush washers?
by Jack
• 2 years ago
1 answer
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Will caliper #91031040 work with bracket #91631914 and granada rotors?
by Douglas
• 7 years ago
2 answers
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will this kit work with your .810 rotors with no pad spacers needed? on the rear of a imca modified.
by andrew
• 8 years ago
2 answers
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I realize these have no parking brake, but can these be used on the rear of a car that came with rear disc brakes (81 trans am, caddy seville, etc)?
by Jeff
• 8 years ago
1 answer
View Answer
What is the weight of the caliper?
by Norm
• 8 years ago
1 answer
View Answer
Will these 2 3/4" calipers work with Wilwood master cylinder?
by rangel
• 8 years ago
2 answers
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I don't see any provision for parking brake, emergency brake. Did I overlook it. Street legal cars here must pass inspection with a suitable parking brake.
by Jay
• 8 years ago
2 answers
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Are thes right hand our left
by Rayray
• 8 years ago
3 answers
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Will these work with the heidts 55 Chevy dropped spindles and disc brakes with metric calipers? Thank you.
by Doug
• 9 years ago
2 answers
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How much will these affect pedal travel on a 1" bore master cylinder. Will I still have enough pedal without changing the master cylinder?
by Joe V.
• 9 years ago
2 answers
View Answers
10 of 23 questions shown
Fitment
Fitment
1982-2002 Chevy S10
1982-1990 GMC S15