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
Okay5.6%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.
All 35 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
172-1361 PV4 Brake Proportioning Valve Disc/Disc Brake System Combination Valve Universal
LDMINDA$37.594 rev
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$6.955 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
Brake Proportioning Valve Adjustable Proportioning Valve Universal Hot Rods 3/16 Brake 3/8-24 Fittings 1/8NPT
SY-PARTS$20.0210 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★
IMOOA Universal Knob Adjustable Disk Drum Brake Proportioning Valve Black Aluminum
IMOOA$21.584.0★
DUZFOREI 1/8NPT Brake Proportional Valve Replacement for 150PSI1200PSI Pressure Range Brake Proportioning Valve for Car Brake Adjustment
DUZFOREI$23.353.5★
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$37.624.8★
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★
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×
Reviews
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”