--- product_id: 11182178 title: "260-8419 Adjustable Proportioning Valve Knob,Silver" brand: "wilwood" price: "399.66 DT" currency: TND in_stock: true category: "Wilwood" url: https://www.desertcart.tn/products/11182178-260-8419-adjustable-proportioning-valve-knob-silver store_origin: TN region: Tunisia --- # 1/8-27 NPT standard ports 100-1000 PSI adjustable pressure 5.2 oz lightweight forged billet design 260-8419 Adjustable Proportioning Valve Knob,Silver **Brand:** wilwood **Price:** 399.66 DT **Availability:** ✅ In Stock ## Summary > ⚡ Master your brake balance like a pro—because precision is power. ## Quick Answers - **What is this?** 260-8419 Adjustable Proportioning Valve Knob,Silver by wilwood - **How much does it cost?** 399.66 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 - • **Universal Fit:** Includes 1/8-27 NPT to 3/8-24 fittings, compatible with most domestic brake lines. - • **Compact & Ready:** Compact size with side mounting holes for seamless integration into your setup. - • **Lightweight Durability:** Forged billet metal construction weighs just 5.2 oz—strength without bulk. - • **Maximum Pressure Range:** Adjust from 100 to 1000 PSI for ultimate braking customization. - • **Precision Pressure Control:** Fine-thread knob lets you dial in braking balance with surgical accuracy. ## Overview The Wilwood 260-8419 Adjustable Proportioning Valve Knob offers industry-leading pressure adjustment from 100 to 1000 PSI, enabling up to 57% reduction in rear brake line pressure. Crafted from lightweight forged billet metal, it weighs only 5.2 ounces and features fine-thread tuning for precise control. Standard 1/8-27 NPT ports and included fittings ensure compatibility with most domestic brake lines, making it a top choice for professional-grade brake system customization. ## 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 ## 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 | #33,382 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Replacement Brake Proportioning Valves | | Brand Name | Wilwood | | Connector Type | Threaded | | Customer Reviews | 4.6 4.6 out of 5 stars (354) | | Exterior Finish | Painted | | Global Trade Identification Number | 00889545067934 | | Included Components | Proportioning Valve | | Inlet Connection Size | 0.38 Inches | | Inlet Connection Type | National Pipe Tapered | | Item Dimensions | 5.91 x 7.87 x 3.94 inches | | Item Type Name | Proportioning Valve | | Item Weight | 0.46 Pounds | | Manufacturer | Wilwood | | Manufacturer Part Number | 2608419 | | Manufacturer Warranty Description | 1 year | | Material Type | Metal | | Maximum Pressure | 1000 Pound per Square Inch | | Model Number | 260-8419 | | Number of Pieces | 1 | | Number of Ports | 2 | | Outlet Connection Size | 0.38 Inches | | Outlet Connection Type | NPT | | Part Interchange Info | 260-8419 | | Size | Stock | | Smart Home Compatibility | Not Smart Home Compatible | | Thread Size | Fine | | Thread Type | Fine | | UPC | 889545067934 | | Unit Count | 1.0 Count | | Valve Type | Proportioning Valve | ## Product Details - **Brand:** Wilwood - **Exterior Finish:** Painted - **Inlet Connection Size:** 0.38 Inches - **Inlet Connection Type:** National Pipe Tapered - **Item dimensions L x W x H:** 5.91 x 7.87 x 3.94 inches - **Material:** Metal - **Maximum Operating Pressure:** 1000 Pound per Square Inch - **Number of Ports:** 2 - **Outlet Connection Size:** 0.38 Inches - **Outlet Connection Type:** NPT ## Images ![260-8419 Adjustable Proportioning Valve Knob,Silver - Image 1](https://m.media-amazon.com/images/I/41zZj50OFnL.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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/11182178-260-8419-adjustable-proportioning-valve-knob-silver](https://www.desertcart.tn/products/11182178-260-8419-adjustable-proportioning-valve-knob-silver) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-20*