proportioning valve
Worth a lookShows a thin review moat (89 avg reviews), but high returns (5.6%) keeps it on the watch list.
Review moat
Incredible89.17avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$42.78avg listing price — sweet spot $15–$100
Quality gap
Great4.1★avg incumbent rating — lower means beatable quality
Price range
Good$6.95–$131.81cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good65%top-5 brand share — brands hold most of the demand
Competition
Good50%top-5 click share — leaders hold, buyers still browse
Conversion
Good4.0%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
Bad5.6%return rate — above 5% kills the launch gate
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
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.No pronounced peak months · busiest ÷ quietest = 1.3×
Top proportioning valve search terms
- brake proportioning valve35K/yr
- proportioning valve26K/yr
- adjustable proportioning valve8K/yr
- gm proportioning valve6K/yr
- adjustable brake proportioning valve5K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake 172-1353 PV71 Fit for GM Street Rod Classic Car & Truck
POWERWORKS$39.604.5★696 rev
Wilwood 260-8419 Adjustable Proportioning Valve Knob Silver
Wilwood$47.804.6★357 rev
Wilwood 4444/30 260-11179 Proportioning Valve
Wilwood$100.244.5★412 rev
POWERWORKS PV4 Brake Proportioning Valve Disc/Disc Brake System Combination Valve
POWERWORKS$39.544.5★303 rev
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$44.692.9★17 rev
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$39.491 rev
RUIANOMG 172-1353 PV2 Brass Proportioning Valve Disc/Drum Disc Front Drum Rear Brake Kit Replacement For Chevy Buick Trucks
RUIANOMG$52.9812 rev
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$33.753 rev
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$51.4310 rev
DUZFOREI 1/8NPT Brake Proportional Valve Replacement for 150PSI1200PSI Pressure Range Brake Proportioning Valve for Car Brake Adjustment
DUZFOREI$23.358 rev
Trending
90-day click momentum260-13190 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$39.495.0★
DUZFOREI 1/8NPT Brake Proportional Valve Replacement for 150PSI1200PSI Pressure Range Brake Proportioning Valve for Car Brake Adjustment
DUZFOREI$23.353.5★
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$38.614.5★
172-1361 PV4 Brass Brake Proportioning Valve Disc/Disc Brakes Kits For Chevy Mopar 4 Wheel Disc Brakes Trucks
pexulys$47.684.2★
Wilwood Engineering 260-12627 Adjacent Proportioning Valve Knob Style (M10 x 1.0 BF inlet)
Wilwood$53.644.6★
What buyers say about proportioning valve
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“As Advertised”
“work great now nice machine work to it”
“Brakes must work perfectly”
“It was not difficult to install”
“The large knurled knob is easy to turn and makes fine tuning brake pressure quick and precise”
“Fit was nice”
“Nice lil valve for the money”
“Quality, that's new”
“feels safer driving”
What buyers complain about
“Leaked out of every orifice”
“It's like they didn't pass the wilwood quality control”
“But, again, it did not function as intended”
“Doesnt do anything, same pressure all the way in and out”
“Lot cheaper than oem”
“brake fluid started pissing out of the sensor on top”
“the electrical sending unit was too big for my current setup so just took it out of the old one and swapped them”
“Fluid would not flow thru once installed”
“This product did not fit my 1989 GMC Sierra pick up don't know how it works on the Wright application”
“At first I thought maybe I installed it wrong”
Top return reasons
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.