Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
![Brake Master Cylinder Kit with Adjustable Proportioning Valve and Mounting Hardware [Universal Mounting]](https://www.jegs.com/images/mini_750/500/555/555-631390k2.jpg)
Vehicle Info NeededJEGSPART NUMBER: 555-631390K2
Brake Master Cylinder Kit with Adjustable Proportioning Valve and Mounting Hardware [Universal Mounting]
$27898
5 left in stock
Ships Tomorrow
Lowest Price GuaranteeUniversal Cast Aluminum Brake Master Cylinders
Brake Master Cylinder KitUniversal Mounting 1 in. Bore Includes:
- Black Aluminum Brake Master Cylinder w/Dual Reservoir
- Adjustable Brake Proportioning Valve Kit w/Mounting Bracket & Brake Lines
JEGS 555-631390K2 Master Cylinder Kit Includes:
- (1) JEGS Brake Master Cylinder with Dual Reservoir, Aluminum with Black Finish [Universal Mounting] - 555-631390
- (1) JEGS Adjustable Brake Proportioning Valve Kit with Mounting Bracket and Brake Lines - 555-631452
Direct-Fit & Universal Brake Master Cylinders
JEGS offers a wide variety of brake master cylinders for direct fit or universal applications. Whether you're looking for a chrome unit to make your engine bay shine or just a replacement to get your vehicle back on the road, we have you covered. All units are manufactured using NEW not remanufactured high-quality materials and finishes to provide years of braking service.
Part TypeMaster Cylinder
Product LineJEGS Brake Master Cylinders
BrandJEGS
Part CategoryReplacement Parts
Rear Brake TypeDisc or Drum
Hardware IncludedNo
Forward Outlet Size1/2-20 IF (Inverted Flare)
Mounting Flange Center To Center Distance (In.)3.375
Master Cylinder Cap IncludedYes
Installation Hardware IncludedNo
Mounting Hole Quantity2 holes
Master Cylinder Bore Size1 in (25.4 mm)
Front Brake TypeDisc or Drum
QuantitySold as a kit
Part FitmentSemi Universal
Bleeder Hoses IncludedYes
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Zinc Brake Line Coil Kit [3/16 in. x 25 ft.]](https://www.jegs.com/images/mini_200/500/555/555-63030.jpg)
JEGS
Tubing Straightener For 3/16" to 1/2" O.D. Tubing
Part Number : 555-80082
$15699$172.99
You Save$16.00
![Pro-Style Small Tubing Bender [ Bends Up to 90 degree Angles]](https://www.jegs.com/images/mini_200/500/555/555-80086.jpg)
JEGS
Pro-Style Small Tubing Bender [ Bends Up to 90 degree Angles]
Part Number : 555-80086
$1299$13.99
You Save$1.00
![Penetrating Oil [11 oz. Aerosol Can]](https://www.jegs.com/images/mini_200/600/639/639-11043.jpg)
![Brake and Parts Cleaner [14 oz. Aerosol Can]](https://www.jegs.com/images/mini_200/500/555/555-72312.jpg)
![Fender Cover with Pocket [23 in. W x 31 1/2 in. L]](https://www.jegs.com/images/mini_200/500/555/555-65010.jpg)
JEGS
Fender Cover with Pocket [23 in. W x 31 1/2 in. L]
Part Number : 555-65010
$1499$16.99
You Save$2.00
![Mechanic Chair & Step Stool on Wheels [300 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-81156.jpg)
JEGS
Mechanic Chair & Step Stool on Wheels [300 lb. Capacity]
Part Number : 555-81156
$9099$111.99
You Save$21.00
ITEM YOU MAY ALSO CONSIDER
![Brake Master Cylinder Kit with Adjustable Proportioning Valve [Universal Mounting]](https://www.jegs.com/images/mini_200/500/555/555-631390k1.jpg)
JEGS
Brake Master Cylinder Kit with Adjustable Proportioning Valve [Universal Mounting]
Part Number : 555-631390K1
$25798
![Brake Master Cylinder with Dual Reservoir, Aluminum with Black Finish [Universal Mounting]](https://www.jegs.com/images/mini_200/500/555/555-631390.jpg)
JEGS
Brake Master Cylinder with Dual Reservoir, Aluminum with Black Finish [Universal Mounting]
Part Number : 555-631390
$15199$164.09
You Save$12.10
JEGS
Part Number : 555-631390K1
$25798
JEGS
Part Number : 555-631390
$15199$164.09
You Save$12.10
Some parts are not legal for use in California or other states with similar laws / regulations
