---
title: "proportioning valve — Niche Verdict: Worth a look (55/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/proportioning-valve"
last_updated: "2026-07-13T22:39:52.440Z"
locale: en
meta:
  description: "proportioning valve shows a thin review moat (89 avg reviews), but high returns (5.6%) keeps it on the watch list."
  "og:description": "proportioning valve shows a thin review moat (89 avg reviews), but high returns (5.6%) keeps it on the watch list."
  "og:title": "proportioning valve — Niche Verdict: Worth a look (55/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **proportioning valve**

**Worth a look**

Shows a thin review moat (89 avg reviews), but high returns (5.6%) keeps it on the watch list.

Market size 30Growth 40Conversion 50Competition 58Returns 28Price range 68Avg price 95Brand share 67Review moat 96Quality gap 87

**Review moat**

**Incredible****89.17**

avg incumbent reviews — the moat a new listing must climb

**Avg price**

**Incredible****$42.78**

avg listing price — sweet spot $15–$100

**Quality gap**

**Great****4.1★**

avg incumbent rating — lower means beatable quality

**Price range**

**Good****$6.95–$131.81**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Brand share**

**Good****65%**

top-5 brand share — brands hold most of the demand

**Competition**

**Good****50%**

top-5 click share — leaders hold, buyers still browse

**Conversion**

**Good****4.0%**

search→purchase rate — share of searches ending in a sale

**Growth**

**Okay****+11.8%**

90-day search growth — must beat 0% to launch

**Market size**

**Okay****$137K**

$137K/yr · 80K searches

**Returns**

**Okay****5.6%**

return rate — above 6% kills the launch gate

## **Competition**

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**25 **▲rising

**Sellers**

**110**

**Top-5 brand share**

**65%**

**Open market**

**32%**

- Wilwood29% - POWERWORKS22% - AISHAN6% - Nakkaa4% - LDMINDA4% - DUZFOREI3%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%4%$5K8%$11K12%$16K16%$22K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 35 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 Fit for GM Street Rod Classic Car & Truck](https://m.media-amazon.com/images/I/31cIK-uwP1L.jpg)**PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 Fit for GM Street Rod Classic Car & Truck**POWERWORKS**$39.60**4.5★696 rev](https://www.amazon.com/dp/B081Q6ZKCH) [2![Wilwood 260-8419 Adjustable Proportioning Valve Knob Silver](https://m.media-amazon.com/images/I/31JQts5i4DL.jpg)**Wilwood 260-8419 Adjustable Proportioning Valve Knob Silver**Wilwood**$47.80**4.6★357 rev](https://www.amazon.com/dp/B002G37IEA) [3![Wilwood 4444/30 260-11179 Proportioning Valve](https://m.media-amazon.com/images/I/41f9sHh0+aL.jpg)**Wilwood 4444/30 260-11179 Proportioning Valve**Wilwood**$100.24**4.5★412 rev](https://www.amazon.com/dp/B003LT619Q) [4![POWERWORKS PV4 Brake Proportioning Valve Disc/Disc Brake System Combination Valve](https://m.media-amazon.com/images/I/31iz3Wqn1tL.jpg)**POWERWORKS PV4 Brake Proportioning Valve Disc/Disc Brake System Combination Valve**POWERWORKS**$39.54**4.5★303 rev](https://www.amazon.com/dp/B096TTYR4N) [5![AISHAN Universal Combination Proportioning Valve for Connecting Valve 260-13190 260-11179 and Master Cylinder Complete Mounting Bracket Kit Compatible with Wilwood Style & Adjustable Knob](https://m.media-amazon.com/images/I/41M6UtE1fzL.jpg)**AISHAN Universal Combination Proportioning Valve for Connecting Valve 260-13190 260-11179 and Master Cylinder Complete Mounting Bracket Kit Compatible with Wilwood Style & Adjustable Knob**AISHAN**$44.69**2.9★17 rev](https://www.amazon.com/dp/B0C1BJH9JX)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![260-13190 Universal Combination Brake Proportioning Valve & Mounting Bracket & Adjustable Knob | Fit for Wilwood master cylinders 260-8555 260-8556 260-9439 260-12900 260-13375 | OE 260-11179](https://m.media-amazon.com/images/I/41PL+jQmFsL.jpg)**260-13190 Universal Combination Brake Proportioning Valve & Mounting Bracket & Adjustable Knob | Fit for Wilwood master cylinders 260-8555 260-8556 260-9439 260-12900 260-13375 | OE 260-11179**LLNSEAUTO**$39.49**1 rev6mo ago](https://www.amazon.com/dp/B0GDF8KW8C) [![172-1361 PV4 Brake Proportioning Valve Disc/Disc Brake System Combination Valve Universal](https://m.media-amazon.com/images/I/31wdfWAFuyL.jpg)**172-1361 PV4 Brake Proportioning Valve Disc/Disc Brake System Combination Valve Universal**LDMINDA**$37.59**4 rev1y ago](https://www.amazon.com/dp/B0FH4M2S6L) [![Rebvugr 2PCS Brake Proportioning Valve Bleeder Tool Bleeder Tool Combination Valves Drum Brake Tool Universal Car Accessories GM Combination Valves Fit for Disc/Disc & Disc/Drum PV2 & PV4 (2PCS)](https://m.media-amazon.com/images/I/51JqzFZD6UL.jpg)**Rebvugr 2PCS Brake Proportioning Valve Bleeder Tool Bleeder Tool Combination Valves Drum Brake Tool Universal Car Accessories GM Combination Valves Fit for Disc/Disc & Disc/Drum PV2 & PV4 (2PCS)**Rebvugr**$6.95**5 rev1y ago](https://www.amazon.com/dp/B0FGXDFDCN) [![RUIANOMG 172-1353 PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake Kit Replacement For Chevy Buick Trucks](https://m.media-amazon.com/images/I/41vCUPwVtBL.jpg)**RUIANOMG 172-1353 PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake Kit Replacement For Chevy Buick Trucks**RUIANOMG**$52.98**12 rev1y ago](https://www.amazon.com/dp/B0FGJY9ZTZ) [![Brake Proportioning Valve Adjustable Proportioning Valve Universal Hot Rods 3/16 Brake 3/8-24 Fittings 1/8NPT](https://m.media-amazon.com/images/I/31bvGFR-ptL.jpg)**Brake Proportioning Valve Adjustable Proportioning Valve Universal Hot Rods 3/16 Brake 3/8-24 Fittings 1/8NPT**SY-PARTS**$20.02**10 rev1y ago](https://www.amazon.com/dp/B0FFM13W3J)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![260-13190 Universal Combination Brake Proportioning Valve & Mounting Bracket & Adjustable Knob | Fit for Wilwood master cylinders 260-8555 260-8556 260-9439 260-12900 260-13375 | OE 260-11179](https://m.media-amazon.com/images/I/41PL+jQmFsL.jpg)**260-13190 Universal Combination Brake Proportioning Valve & Mounting Bracket & Adjustable Knob | Fit for Wilwood master cylinders 260-8555 260-8556 260-9439 260-12900 260-13375 | OE 260-11179**LLNSEAUTO**$39.49**5.0★**▲ 234%**](https://www.amazon.com/dp/B0GDF8KW8C) [![IMOOA Universal Knob Adjustable Disk Drum Brake Proportioning Valve Black Aluminum](https://m.media-amazon.com/images/I/318mZfCjsXL.jpg)**IMOOA Universal Knob Adjustable Disk Drum Brake Proportioning Valve Black Aluminum**IMOOA**$21.58**4.0★**▲ 172%**](https://www.amazon.com/dp/B0DYCQ2HVY) [![DUZFOREI 1/8NPT Brake Proportional Valve Replacement for 150PSI1200PSI Pressure Range Brake Proportioning Valve for Car Brake Adjustment](https://m.media-amazon.com/images/I/31uiXAAEqWL.jpg)**DUZFOREI 1/8NPT Brake Proportional Valve Replacement for 150PSI1200PSI Pressure Range Brake Proportioning Valve for Car Brake Adjustment**DUZFOREI**$23.35**3.5★**▲ 166%**](https://www.amazon.com/dp/B0F47FD6GB) [![PV4 Brake Proportioning Valve Disc/Disc Brakes Disc Front Disc Rear Brake Lezhey 172-1361 Universal Brass Disc Brake System Combination Proportioning Valve Compatible with Ford Chevy Dodge](https://m.media-amazon.com/images/I/41Fi8HqWmgL.jpg)**PV4 Brake Proportioning Valve Disc/Disc Brakes Disc Front Disc Rear Brake Lezhey 172-1361 Universal Brass Disc Brake System Combination Proportioning Valve Compatible with Ford Chevy Dodge**Lezhey**$37.62**4.8★**▲ 144%**](https://www.amazon.com/dp/B0DHW35N4G) [![PV2 Brass Combination Proportioning Valve For Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 25509419 Replacement For GM Chevy Chevrolet Ford Classic Car & Truck](https://m.media-amazon.com/images/I/31SYp9-BM8L.jpg)**PV2 Brass Combination Proportioning Valve For Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 25509419 Replacement For GM Chevy Chevrolet Ford Classic Car & Truck**LDMINDA**$38.61**4.5★**▲ 101%**](https://www.amazon.com/dp/B0B12ZMM6X)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +11.8% search growth over the last 90 days.

2K2KSpike '25 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**30%

*“Good quality”*

**Advertised Vs Actual Product**12%

*“As Advertised”*

**Efficiency**10%

*“work great now nice machine work to it”*

**Functionality-Overall**7%

*“Brakes must work perfectly”*

**Assembly/Installation**6%

*“It was not difficult to install”*

**Pressure**5%

*“The large knurled knob is easy to turn and makes fine tuning brake pressure quick and precise”*

**Size-Overall**5%

*“Fit was nice”*

**Value For Money**3%

*“Nice lil valve for the money”*

**Product Condition**3%

*“Quality, that's new”*

**Safety Standards**3%

*“feels safer driving”*

### **What buyers complain about **

**Leak-Proof**24%

*“Leaked out of every orifice”*

**Quality-Overall**17%

*“It's like they didn't pass the wilwood quality control”*

**Functionality-Overall**11%

*“But, again, it did not function as intended”*

**Pressure**10%

*“Doesnt do anything, same pressure all the way in and out”*

**Value For Money**5%

*“Lot cheaper than oem”*

**Sensor**3%

*“brake fluid started pissing out of the sensor on top”*

**Size-Overall**3%

*“the electrical sending unit was too big for my current setup so just took it out of the old one and swapped them”*

**Spray/Flow**3%

*“Fluid would not flow thru once installed”*

**Compatibility-Overall**3%

*“This product did not fit my 1989 GMC Sierra pick up don't know how it works on the Wright application”*

**Assembly/Installation**3%

*“At first I thought maybe I installed it wrong”*

### **Top return reasons **

**Size-Overall**26%

**Compatibility-Overall**18%

**Leak-Proof**13%

**Defective Material/Parts**10%

**Functionality-Overall**5%

**Advertised Vs Actual Product**5%

**Pressure**3%

**Mechanism Issues**3%

**Product Condition**2%

**Mounting**2%