---
title: "Proportioning Valve — $137K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/proportioning-valve"
last_updated: "2026-08-10T06:03:21.265Z"
locale: en
meta:
description: "Niche score 55/100 · $137K/yr market · 80K searches/yr · $42.78 avg price. High returns (5.6%) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $137K/yr market · 80K searches/yr · $42.78 avg price. High returns (5.6%) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Proportioning Valve — $137K/yr Amazon US Niche (2026) - Flapen"
---
# **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 23Price 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**
**Bad****5.6%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, proportioning valve is a $137K/yr Amazon United States market (80K searches/yr). The top 5 brands hold 65% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **proportioning valve market data**
- **Units sold / yr**
- **3K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$107K–$128K**
- units × avg price
- **Conversion rate**
- **4.0%**
- **Avg BSR**
- **#77**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **71%**
- **Out of stock**
- **1.3%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **197 days**
## **Competition & brand share**
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%**
Top 20: 97%
**Top-5 click share**
**50%**
Top 20: 86%
**Open market**
**32%**
- Wilwood29% - POWERWORKS22% - AISHAN6% - Nakkaa4% - LDMINDA4% - DUZFOREI3%
## **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×
[**Open Trend **](https://flapen.com/research/us/automotive/proportioning-valve/trend)
## **Top proportioning valve search terms**
- **brake proportioning valve**35K/yr+2.9%2.4% conv. - **proportioning valve**26K/yr+15.0%2.2% conv. - **adjustable proportioning valve**8K/yr+39.6%3.5% conv. - **gm proportioning valve**6K/yr+14.5%4.0% conv. - **adjustable brake proportioning valve**5K/yr+9.3%4.0% conv. [**All search terms **](https://flapen.com/research/us/automotive/proportioning-valve/search-terms)
## **Top proportioning valve products on Amazon**
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 24 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**POWERWORKS**$39.60**4.5★696 rev](https://www.amazon.com/dp/B081Q6ZKCH) [2**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**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**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**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**LLNSEAUTO**$39.49**1 rev6mo ago](https://www.amazon.com/dp/B0GDF8KW8C) [**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) [**Universal Combination Proportioning Valve and Mounting Bracket Lines Kit with Adjustable Knob Fit for Wilwood Style Universal Brake Proportioning Valve 260-13190 260-11179**SY-PARTS**$33.75**3 rev1y ago](https://www.amazon.com/dp/B0FC5DVW76) [**Femibon PV2 Brass Disc/Drum Disc Front Drum Rear Brake Proportioning Valve & Mount Bracket Connector Kit Compatible with for Chevy Buick Classic Car & Truck Replace part 172-1353**Femibon**$51.43**10 rev1y ago](https://www.amazon.com/dp/B0F8MY5FPD) [**DUZFOREI 1/8NPT Brake Proportional Valve Replacement for 150PSI1200PSI Pressure Range Brake Proportioning Valve for Car Brake Adjustment**DUZFOREI**$23.35**8 rev1y ago](https://www.amazon.com/dp/B0F47FD6GB)
**~~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**LLNSEAUTO**$39.49**5.0★**▲ 234%**](https://www.amazon.com/dp/B0GDF8KW8C) [**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) [**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) [**172-1361 PV4 Brass Brake Proportioning Valve Disc/Disc Brakes Kits For Chevy Mopar 4 Wheel Disc Brakes Trucks**pexulys**$47.68**4.2★**▲ 54%**](https://www.amazon.com/dp/B0DSSVHQNJ) [**Wilwood Engineering 260-12627 Adjacent Proportioning Valve Knob Style (M10 x 1.0 BF inlet)**Wilwood**$53.64**4.6★**▲ 40%**](https://www.amazon.com/dp/B011B4UX5U)
**~~View all trending →~~**
## **What buyers say about proportioning valve**
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%
## **Common questions**
- **Is proportioning valve profitable to sell on Amazon United States?**
- The niche generates $137K/yr across 35 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +11.8%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the proportioning valve niche?**
- 25 brands and 110 sellers compete. The top 5 products take 50% of clicks and top 5 brands hold 65% of demand.
- **What do buyers complain about in proportioning valve?**
- Top complaints mined from reviews: Leak-Proof, Quality-Overall, Functionality-Overall. The return rate is 5.6% — above our launch gate.
- **When does demand for proportioning valve peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the proportioning valve niche?**
- Listings span $6.95–$131.81; the average listing price is $42.78 (sweet spot $15–$100). The average incumbent carries 89 reviews — the moat a new listing must climb.
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