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#91031355
Speedway Black Adjustable Brake Proportioning Valve
- Allows easy adjustment of front to rear brake bias
- Universal design works on all race cars
- 100 to 1500 psi range, up to 57% pressure reduction
$43.99
/each
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Product Summary
Knob Adjustable Proportioning Valve Type, Aluminum
- Allows easy adjustment of front to rear brake bias
- Universal design works on all race cars
- 100 to 1500 psi range, up to 57% pressure reduction
- Uses 1/8" NPT fittings
- Prevents severe rear brake lockup under moderate-to-heavy braking
Key Specs
| Proportioning Valve Type | Knob Adjustable |
| Port Quantity | 2-Port |
| Material Type | Aluminum |
| Finish | Anodized |
| Color | Black |
Need To Know
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Return PolicySpeedway Motors 91031355 Details
Speedway Motors 91031355 Details
Allows easy adjustment of front to rear brake bias. Universal design works on all race cars. 100 to 1500 psi range, up to 57% pressure reduction. Uses 1/8" NPT fittings.
Compensates for weight transfer to the front wheels during braking. All factory brake systems allow for this in some fashion. An APV allows you to "fine tune" a street or race brake system (which normally uses components from a variety of sources) and thus prevents severe rear brake lockup under moderate-to-heavy braking.
(pdf)
Charts
910-31355 Instructions (PDF)
910-31355 Instructions (PDF)
Guides & Documents
Speedway Motors 91031355 Specifications
Speedway Motors 91031355 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 91031355 |
| Brand | Speedway Motors |
| Proportioning Valve Type | Knob Adjustable |
| Port Quantity | 2-Port |
| Material Type | Aluminum |
| Finish | Anodized |
| Color | Black |
| GENERAL | |
| Thread Pitch | 1/8" NPT |
| Overall Length | 4.25" |
| Overall Width | 1.25" |
| Overall Thickness | 1.64" |
| Centerline of Holes | 1.00" |
| Notes | Includes (2) 1/8" NPT to 3/8"-24 IFF adapters. |
Ratings & Reviews
4.8
13 Reviews
Our product has consistently received positive remarks for its high quality, ease of use, and practicality. While one user mentioned a minor issue with a rubber O-ring, the general consensus is that any minor setbacks do not detract from its overall performance. Many customers have found it highly beneficial for a range of vehicles, from the '95 ranger to drum brakes, highlighting its versatility. Furthermore, it has compared favorably against alternatives, with one customer explicitly mentioning it met their requirements over other products. Some customers needed to make minor adjustments, but it didn't impact their willingness to buy again due to the product's superior contribution to their brake system upgrade. Users praise its straightforward use, indicating our product is user-friendly.
Ratings & Reviews
4.8
13 Reviews
Our product has consistently received positive remarks for its high quality, ease of use, and practicality. While one user mentioned a minor issue with a rubber O-ring, the general consensus is that any minor setbacks do not detract from its overall performance. Many customers have found it highly beneficial for a range of vehicles, from the '95 ranger to drum brakes, highlighting its versatility. Furthermore, it has compared favorably against alternatives, with one customer explicitly mentioning it met their requirements over other products. Some customers needed to make minor adjustments, but it didn't impact their willingness to buy again due to the product's superior contribution to their brake system upgrade. Users praise its straightforward use, indicating our product is user-friendly.
4.8
13 reviews
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11
4
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Most Liked Positive Review
5.0
Amazing
Used it on my 95 ranger that has a dodge ram 2500 master and an explorer 8.8. https://youtube.com/shorts/73ony2C00Wo?feature=share
Most Liked Negative Review
3.0
I would buy again.
I had to tighten the large nut holding this thing together, but I didn't expect it to be loose. It costs me extra time bleeding the brakes and a mess on the floor.
Filter by Ratings
Works as intended
5.0
15 days ago
Bob
Idaho Falls
Verified
I've used a few of these on different projects and it works as it's supposed to. Especially on vehicles that are light in the back.
Would Recommend
Would buy again
5.0
2 months ago
M
Frisco TX
Verified
Fit as intended
Works Great
5.0
3 months ago
Joe
Northwest Arkansas
Verified
Did just what I needed, allowed me to adjust the brakes on my OBS so that the back brakes did not lock up.
Would Recommend
I would buy this again
5.0
5 months ago
Lawnbouy
Alberta Canada
Verified
Simple install
Would Recommend
I WOULD BUY THIS AGAIN
5.0
6 months ago
SAM
DALLAS
Verified
WELL BUILT , COMPACT - COMES WITH BRAKE LINE FITTINGS WHICH IS A PLUS. WORKS AS SHOULD WITH NO LEAKS
Would Recommend
Quality piece, great addition for rear disc brakes
5.0
a year ago
Shop Dog Fabrication
Ann Arbor, Mi
Verified
Nice and sturdy piece, doesn't feel cheap, clearly marked inlet and outlet, comes with the adaptor fittings, I would use this product again on future projects. Packaging and direction were also really good.
Would Recommend
speedway proportioning valve
5.0
a year ago
joker
Ia
Verified
just like willwood but a better price
Would Recommend
+++++++
5.0
2 years ago
john
olympia
Verified
4 wheel disc brakes 34 olds
Would Recommend
Not bad.
4.0
2 years ago
Mike
Pacific Northwest
Verified
Good product. The rubber o-ring seems cheap. But maybe that's how they are.
Would Recommend
Amazing
5.0
3 years ago
Swrvtech inc
Florida
Verified
Used it on my 95 ranger that has a dodge ram 2500 master and an explorer 8.8. https://youtube.com/shorts/73ony2C00Wo?feature=share
Would Recommend
Showing 10 of 13 reviews