---
product_id: 11182178
title: "260-8419 Adjustable Proportioning Valve Knob,Silver"
brand: "wilwood"
price: "$177.17"
currency: USD
in_stock: true
reviews_count: 8
category: "Wilwood"
url: https://www.desertcart.ec/products/11182178-260-8419-adjustable-proportioning-valve-knob-silver
store_origin: EC
region: Ecuador
---

# Lightweight 5.2 oz valve 100-1000 PSI adjustable pressure Compact forged billet design 260-8419 Adjustable Proportioning Valve Knob,Silver

**Brand:** wilwood
**Price:** $177.17
**Availability:** ✅ In Stock

## Summary

> ⚡ Master your brake balance like a pro — precision tuning meets lightweight power!

## Quick Answers

- **What is this?** 260-8419 Adjustable Proportioning Valve Knob,Silver by wilwood
- **How much does it cost?** $177.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/11182178-260-8419-adjustable-proportioning-valve-knob-silver)

## Best For

- wilwood enthusiasts

## Why This Product

- Trusted wilwood brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Maximum Pressure Range:** Adjust from 100 to 1000 PSI, offering the widest pressure modulation on the market.
- • **Universal Compatibility:** Includes versatile 1/8-27 NPT to 3/8-24 fittings, fitting most domestic 3/16” brake lines seamlessly.
- • **Featherweight Engineering:** At just 5.2 ounces, this valve adds strength without bulk—perfect for performance-focused builds.
- • **Precision Pressure Control:** Fine-tune your brake balance with a smooth, threaded adjuster knob for ultimate stopping power.
- • **Durable Forged Billet Build:** Crafted from premium materials for long-lasting reliability and a sleek silver finish that stands out under the hood.

## Overview

The Wilwood 260-8419 Adjustable Proportioning Valve offers a robust 100-1000 PSI pressure range with fine-threaded adjustment for precise front-to-rear brake balance. Engineered from forged billet aluminum, it weighs only 5.2 ounces and includes standard 1/8-27 NPT ports with fittings for easy integration into most domestic brake systems. Ideal for performance enthusiasts seeking reliable, customizable braking control.

## Description

The new generation of adjustable proportioning valves combines the latest refinements to deliver precise pressure metering and strength from a compact forged billet design. Pressure adjustments range from 100-1000 PSI and provide for a maximum decrease of 57% in line pressure, the most of any available valve. Adjuster knob with fine thread tuning provides precise pressure adjustment. Valves weigh only 5.2 ounces and have two .25” side mounting holes spaced 1.00” apart. Inlet / outlet ports are 1/8-27 NPT and valves are supplied with two 1/8-27 NPT to 3/8-24 inverted flare female fittings that will fit most domestic 3/16th hard brake lines

Review: Wilwood is always good - I needed a proportioning valve and the stock one for my truck is not made anymore and this one works great with the added benefit of being adjustable
Review: Would buy again - Good product

## Features

- Adjustable proportioning valve
- Pressure adjustments range from 100-1000 PSI
- Fine tune the front to rear braking balance by proportionally decreasing the rear brake line pressure
- Valves weigh only 5.2 ounces
- Standard in and out ports are 1/8-27 NPT

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002G37IEA |
| Best Sellers Rank | #25,436 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Replacement Brake Proportioning Valves |
| Brand | Wilwood |
| Customer Reviews | 4.6 4.6 out of 5 stars (343) |
| Date First Available | January 1, 2008 |
| Exterior Finish | Painted |
| Global Trade Identification Number | 00889545067934 |
| Inlet Connection Size | 0.38 Inches |
| Inlet Connection Type | Flare |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7.4 ounces |
| Item dimensions L x W x H | 5.91 x 7.87 x 3.94 inches |
| Item model number | 260-8419 |
| Manufacturer | Wilwood |
| Manufacturer Part Number | 2608419 |
| Material | Silver |
| Maximum Operating Pressure | 1000 Pound per Square Inch |
| Model | 260-8419 |
| Number of Ports | 2 |
| OEM Part Number | 260-8419 |
| Outlet Connection Size | 0.38 Inches |
| Outlet Connection Type | 3/8-24 IF Female |
| Product Dimensions | 5.91 x 7.87 x 3.94 inches |
| UPC | 889545067934 |

## Product Details

- **Brand:** Wilwood
- **Exterior Finish:** Painted
- **Inlet Connection Size:** 0.38 Inches
- **Inlet Connection Type:** Flare
- **Item dimensions L x W x H:** 5.91 x 7.87 x 3.94 inches
- **Material:** Silver
- **Maximum Operating Pressure:** 1000 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.38 Inches
- **Outlet Connection Type:** 3/8-24 IF Female

## Images

![260-8419 Adjustable Proportioning Valve Knob,Silver - Image 1](https://m.media-amazon.com/images/I/41+U60B0GSL.jpg)

## Questions & Answers

**Q: Does the connectors that come with this product except single or double flare?**
A: I installed this product on a 1968 Pontiac GTO using a double flair. However, you can still use a single flare if thats all you have. Double flares are better becuase it leaves more tubing material at the end for the fittings to clamp when tightened together. A single flare will work fine as long as its a perfect flare. From experience with double flares they dont need to be perfect in order for them not to leak. For example with a double flare; you might have one end .001"-.003'' shorter than the other like a lopsided pyramid and it will probably still seal just fine. But when you do that on a single flare, theres a good chance your fitting will crack or split the end of the single flare thats under the most stress. Like if you do a lopside pyramid on a single flare, its probably gonna leak beacuse it either cracked in the fitting or theres just not enough filler metal to create a tight seal between the fittings. Hope this helps when working on tubing...

**Q: My fittings are metric 10mm, what will I need to make this work?this is s.a.e right?**
A: These have a 1/8-27 NPT but include adapters to go to 3/16-24 Female. You will need an adapter to go from 1/8-27 NPT to 10mm female or an adapter to go from 3/16-24 male to 10mm female.

**Q: What is the flow coefficient of the vale?   (The Cv value.  It's unbelievable this is not in the description.)**
A: Not sure what that means but I believe it reduces flow up to 50% used it on a jeep tj with axle swaps and have had zero issues

**Q: is 8419 disc on disc ?**
A: You would have to elaborate more

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wilwood is always good
*by C***Y on June 25, 2024*

I needed a proportioning valve and the stock one for my truck is not made anymore and this one works great with the added benefit of being adjustable

### ⭐⭐⭐⭐⭐ Would buy again
*by M***I on November 6, 2025*

Good product

### ⭐⭐⭐⭐⭐ This works
*by P***E on July 10, 2023*

Had to replace my old one that came with my disc brake set up around 7 yrs ago. Started to leak out the stem. This bolts in the same, lines fit the same and works the same with no leaks. Also carrys a well known brand name. 65 mustang stops again.

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-01*