JavaScript Disabled

Your JavaScript appears to be disabled. JavaScript is necessary for various functions, such as order checkout, to operate on this web site. Please ensure that JavaScript is enabled.

Outdated Internet Browser Detected

Your web browser appears to be out of date. Soon you will not be able to create a secure connection to our web site using TLS 1.0. Please upgrade your browser from current version( ). Learn more about TLS.

In-Store Pickup Location

Summit Racing® Adjustable Brake Proportioning Valves SUM-G3905

Brake Proportioning Valve, Knob Adjustment, 1/8 in. NPT, Single Inlet/Outlet, Aluminum, Natural, Each

Estimated Ship Date: Loading...Processing Today Would you rather pick it up? Select Location

Hazardous Material Warning
WARNING
WARNING: Cancer and Reproductive Harm For more information, visit www.P65warnings.ca.gov.

57 Customer Reviews for Summit Racing SUM-G3905 - Summit Racing® Adjustable Brake Proportioning Valves

Average Customer Review

5 Star

(47)

4 Star

(5)

3 Star

(1)

2 Star

(0)

1 Star

(4)

Results 1 - 10 of 57

Sort by Most Helpful Sort by Newest Review This Product

absolutely necessary

Summit RacingSummit Racing Verified Purchase

SUM-G3905
Same design as the first ones from back in the 80's. The same quality, comes with adapters for 3/16 lines. I have used a dozen of these with absolutely no returns. They are easy to adjust and mount friendly.

3 of 3 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from GA

Date: March 05, 2014

Appearance
Ease of Installation
Price/Value
Quality

Easy tonise

Summit RacingSummit Racing Verified Purchase

SUM-G3905
These are great when converting to disc brakes and creating your own plumbing. Run this valve straight from the rear brake chamber on the master cylinder. Do not run this into or from an existing distribution block.

2 of 2 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from CA

Date: April 01, 2018

Appearance
Ease of Installation
Price/Value
Quality

does the job

Summit RacingSummit Racing Verified Purchase

SUM-G3905
I like that the knob is clearly labled for adjustment. Ive uses wilwood proportioning valves and they are lacking such clear labeling.

2 of 2 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from CA

Date: August 26, 2016

Appearance
Ease of Installation
Price/Value
Quality

SUM-G3905

Summit RacingSummit Racing Verified Purchase

SUM-G3905
I used this unit to replace a factory GM proportioning valve. It worked best at the lowest setting so a little more adjustment on the low end could be useful.

2 of 2 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from Australia

Date: March 15, 2014

Appearance
Ease of Installation
Price/Value
Quality

Proportionately awesome

Summit RacingSummit Racing Verified Purchase

SUM-G3905
Replaced my single pot brakes in my 66 Coronet with a dual pot and put this in line with the back ones. Have not cone much tinkering with the settings but I can tell it is doing it's job. Good price and easy to install (except for having to bleed the brakes... what is is about bleeding the brakes? Its probably my least favorite thing to do on my car). ...read more

1 of 1 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from MI

Date: March 17, 2014

Appearance
Ease of Installation
Price/Value
Quality

Just like the big names

Summit RacingSummit Racing Verified Purchase

SUM-G3905
This is a great valve! It has all the features of the name brand models that cost at least twice as much!

1 of 1 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from IN

Date: March 03, 2014

Appearance
Ease of Installation
Price/Value
Quality

Adjustable brake proportioning valve

Summit RacingSummit Racing Verified Purchase

SUM-G3905
Easy to install and worked very well.

0 of 0 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from TX

Date: March 13, 2019

Appearance
Ease of Installation
Price/Value

Brake proportioning value

Summit RacingSummit Racing Verified Purchase

SUM-G3905
Works well and good service

0 of 0 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from KY

Date: October 02, 2018

Appearance
Ease of Installation
Price/Value
Quality

Works well

Summit RacingSummit Racing Verified Purchase

SUM-G3905
Like the fact it came with fittings of course they did not work for me.but all in all a great product

0 of 0 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from PA

Date: July 27, 2018

Appearance
Ease of Installation
Price/Value
Quality

Looks and works great.

Summit RacingSummit Racing Verified Purchase

SUM-G3905
I have used this product on several of my cars, always does the job. This is a good accessory for four wheel disc brakes. Fits nice anywhere in the rear brake line.

0 of 0 found this review helpful.

report abuse

Report Abuse X

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.

Cancel

Reviewer: from OR

Date: May 03, 2018

Appearance
Ease of Installation
Price/Value
Quality

Some parts are not legal for use in California or other states with similar laws / regulations

Back To Results
Email this page
Sign Up for Email X