---
title: "dot 5.1 brake fluid — Niche Verdict: Skip it (37/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/dot-5-1-brake-fluid"
last_updated: "2026-07-10T02:03:20.991Z"
locale: en
meta:
  description: "a small market ($89K/yr) — dot 5.1 brake fluid doesn't clear our bar today."
  "og:description": "a small market ($89K/yr) — dot 5.1 brake fluid doesn't clear our bar today."
  "og:title": "dot 5.1 brake fluid — Niche Verdict: Skip it (37/100) | Amazon United States - Flapen"
---

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# **dot 5.1 brake fluid**

**Skip it****37/100 **

a small market ($89K/yr) — dot 5.1 brake fluid doesn't clear our bar today.

**Market/yr**

**$89K**

**Growth (1y)**

**+141.4%**

**Products**

**12**

**Brands**

**10**

was 13 a year ago

**Sellers**

**91**

**Price range**

**$9.52–$29.37**

**Returns**

**2.0%**

**Rating**

**4.7★**

**Skip it**

Scored 37/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns

Market size

**4**

 ×0.30

Growth

**70**

 ×0.30

Competition

**21**

 ×0.20

Quality gap

**20**

 ×0.10

Returns

**84**

 ×0.10

## **Demand**

Weekly Amazon search volume, last 104 weeks — +141.4% year over year.

1K641Spike '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

## **Seasonality**

Monthly demand index across the year — 1.00 is average.

JFMAMJJASOND

Peak months: May, Jun · busiest ÷ quietest = 2.8×

## **Competition**

- Finish Line31% - Motul31% - Liqui Moly14% - Bosch6% - YOUMAYSTORY4% - SRAM4% - Other (4 brands)10%

The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack. 10 brands and 91 sellers compete here.

**Brands**

**10 **▼falling

was 13 a year ago

**Sellers**

**91**

**Top 5 brand share**

**86%**

#ProductBrandPriceRatingReviewsClick shareTrend

1
![Finish Line High Performance DOT 5.1 Bicycle Brake Fluid Premium Low Viscosity Hydraulic Disc Brake Fluid for Superior Lever Response and Consistent Performance 4oz Bottle](https://m.media-amazon.com/images/I/41lHeMssR3L.jpg) [**Finish Line High Performance DOT 5.1 Bicycle Brake Fluid Premium Low Viscosity Hydraulic Disc Brake Fluid for Superior Lever Response and Consistent Performance 4oz Bottle**](https://www.amazon.com/dp/B007HOBHXQ)

Finish Line$10.204.7★1,28231%▲rising

2
![Liqui Moly Brake Fluid DOT 5.1 | 250 ml | Brake Fluid | SKU: 20158](https://m.media-amazon.com/images/I/41N0CFk41qL.jpg) [**Liqui Moly Brake Fluid DOT 5.1 | 250 ml | Brake Fluid | SKU: 20158**](https://www.amazon.com/dp/B07DG3JKPK)

Liqui Moly$9.524.5★14214%▲rising

3
![Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500mL](https://m.media-amazon.com/images/I/41M1fNW7aKL.jpg) [**Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500mL**](https://www.amazon.com/dp/B00CMZQMKS)

Motul$11.304.9★1,95111%▼falling

4
![Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500ml (2 Pack)](https://m.media-amazon.com/images/I/410EM+2iavL.jpg) [**Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500ml (2 Pack)**](https://www.amazon.com/dp/B07KYWH2W8)

Motul$22.004.9★1,95111%▲rising

5
![Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500ml (3 Pack)](https://m.media-amazon.com/images/I/51bg54LNObL.jpg) [**Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500ml (3 Pack)**](https://www.amazon.com/dp/B07FYXXLBL)

Motul$29.374.9★1,9519%▼falling

6
![BOSCH ESI6-32N Low Viscosity Extended Life Brake Fluid - Compatible with All Vehicles Designed to Use DOT 3 DOT 4 and DOT 5.1 Brake Fluids; 1 Quart](https://m.media-amazon.com/images/I/41YApjdh5yL.jpg) [**BOSCH ESI6-32N Low Viscosity Extended Life Brake Fluid - Compatible with All Vehicles Designed to Use DOT 3 DOT 4 and DOT 5.1 Brake Fluids; 1 Quart**](https://www.amazon.com/dp/B07338GQM8)

Bosch$19.504.8★3,7196%▲rising

7
![YOUMAYSTORY Brake Bleed Kit for SRAM Hydraulic Disc Brakes. Bicycle Hydraulic Brake Bleed Kit Including High Performance Brake Fluid DOT 5.1 Oil 60ml](https://m.media-amazon.com/images/I/41Br5ijoTAL.jpg) [**YOUMAYSTORY Brake Bleed Kit for SRAM Hydraulic Disc Brakes. Bicycle Hydraulic Brake Bleed Kit Including High Performance Brake Fluid DOT 5.1 Oil 60ml**](https://www.amazon.com/dp/B0F1FMXKCV)

YOUMAYSTORY$11.234.4★74%▲rising

8
![SRAM 5.1 DOT Hydraulic Brake Fluid 4oz](https://m.media-amazon.com/images/I/31zCpBXe-rL.jpg) [**SRAM 5.1 DOT Hydraulic Brake Fluid 4oz**](https://www.amazon.com/dp/B00YW4L68K)

SRAM$14.254.8★9014%▼falling

9
![Wagner Dot 5.1 SEVEREDUTY Brake Fluid 32 oz; 946 ml](https://m.media-amazon.com/images/I/41K3JT66hnL.jpg) [**Wagner Dot 5.1 SEVEREDUTY Brake Fluid 32 oz; 946 ml**](https://www.amazon.com/dp/B000C92RDC)

Wagner$20.954.7★1433%—flat

10

![Bicycle DOT 5.1 Brake Fluid High Performance DOT Oil for SRAM/Hayes/Hope/Formula Hydraulic Disc Brakes 120ml/4oz](https://m.media-amazon.com/images/I/411525PmrKL.jpg) [**Bicycle DOT 5.1 Brake Fluid High Performance DOT Oil for SRAM/Hayes/Hope/Formula Hydraulic Disc Brakes 120ml/4oz**](https://www.amazon.com/dp/B0CF1FSMYT)

TerchPilet$15.674.6★813%▲rising

11

![DOT 5.1 Standard Brake Fluid](https://m.media-amazon.com/images/I/41GlyMMmcwL.jpg) [**DOT 5.1 Standard Brake Fluid**](https://www.amazon.com/dp/B07JZ8W66M)

Maxima$12.404.8★2212%▼falling

12

![Avid Bike Brake Bleed Kit for All SRAM Series.Bicycle Hydraulic Brake Bleed Kit Including Metal Adapters and 60ML High Performance Dot 5.1 Brake Fluid.](https://m.media-amazon.com/images/I/41GWxoD-RfL.jpg) [**Avid Bike Brake Bleed Kit for All SRAM Series.Bicycle Hydraulic Brake Bleed Kit Including Metal Adapters and 60ML High Performance Dot 5.1 Brake Fluid.**](https://www.amazon.com/dp/B0F1JPQPLZ)

KACHAA$28.464.7★342%—flat

## **Product shelf**

All 12 tracked products in this niche.

Top sellersNewestTrending

[![Finish Line High Performance DOT 5.1 Bicycle Brake Fluid Premium Low Viscosity Hydraulic Disc Brake Fluid for Superior Lever Response and Consistent Performance 4oz Bottle](https://m.media-amazon.com/images/I/41lHeMssR3L.jpg)**Finish Line High Performance DOT 5.1 Bicycle Brake Fluid Premium Low Viscosity Hydraulic Disc Brake Fluid for Superior Lever Response and Consistent Performance 4oz Bottle** Finish Line**$10.20**4.7★1,282 reviews](https://www.amazon.com/dp/B007HOBHXQ) [![Liqui Moly Brake Fluid DOT 5.1 | 250 ml | Brake Fluid | SKU: 20158](https://m.media-amazon.com/images/I/41N0CFk41qL.jpg)**Liqui Moly Brake Fluid DOT 5.1 | 250 ml | Brake Fluid | SKU: 20158** Liqui Moly**$9.52**4.5★142 reviews](https://www.amazon.com/dp/B07DG3JKPK) [![Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500mL](https://m.media-amazon.com/images/I/41M1fNW7aKL.jpg)**Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500mL** Motul**$11.30**4.9★1,951 reviews](https://www.amazon.com/dp/B00CMZQMKS) [![Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500ml (2 Pack)](https://m.media-amazon.com/images/I/410EM+2iavL.jpg)**Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500ml (2 Pack)** Motul**$22.00**4.9★1,951 reviews](https://www.amazon.com/dp/B07KYWH2W8) [![Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500ml (3 Pack)](https://m.media-amazon.com/images/I/51bg54LNObL.jpg)**Motul DOT 5.1 Synthetic Brake Fluid High Performance Non-Silicone Fluid for ABS ESP & Hydraulic Brake Systems with High Boiling Point Protection 500ml (3 Pack)** Motul**$29.37**4.9★1,951 reviews](https://www.amazon.com/dp/B07FYXXLBL) [![BOSCH ESI6-32N Low Viscosity Extended Life Brake Fluid - Compatible with All Vehicles Designed to Use DOT 3 DOT 4 and DOT 5.1 Brake Fluids; 1 Quart](https://m.media-amazon.com/images/I/41YApjdh5yL.jpg)**BOSCH ESI6-32N Low Viscosity Extended Life Brake Fluid - Compatible with All Vehicles Designed to Use DOT 3 DOT 4 and DOT 5.1 Brake Fluids; 1 Quart** Bosch**$19.50**4.8★3,719 reviews](https://www.amazon.com/dp/B07338GQM8) [![YOUMAYSTORY Brake Bleed Kit for SRAM Hydraulic Disc Brakes. Bicycle Hydraulic Brake Bleed Kit Including High Performance Brake Fluid DOT 5.1 Oil 60ml](https://m.media-amazon.com/images/I/41Br5ijoTAL.jpg)**YOUMAYSTORY Brake Bleed Kit for SRAM Hydraulic Disc Brakes. Bicycle Hydraulic Brake Bleed Kit Including High Performance Brake Fluid DOT 5.1 Oil 60ml** YOUMAYSTORY**$11.23**4.4★7 reviews](https://www.amazon.com/dp/B0F1FMXKCV) [![SRAM 5.1 DOT Hydraulic Brake Fluid 4oz](https://m.media-amazon.com/images/I/31zCpBXe-rL.jpg)**SRAM 5.1 DOT Hydraulic Brake Fluid 4oz** SRAM**$14.25**4.8★901 reviews](https://www.amazon.com/dp/B00YW4L68K)

## **Reviews**

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

### **What buyers love **

**Advertised Vs Actual Product**20%

*“As advertised”*

**Quality-Overall**18%

*“Well rated fluid, driven daily, and no issues, comes in a good size, and my son did a clean job, easy to clean up”*

**Value For Money**15%

*“Good price”*

**Efficiency**8%

*“I have the peace of mind that his brakes work very well”*

**Size-Overall**7%

*“Perfect fit”*

**Instructions/User Manual/Troubleshooting**5%

*“Directions were clear with QR code for video”*

**Lubrication**4%

*“Motul DOT 5.1 Synthetic Brake Fluit is the best on the market”*

**Comfort-Overall**4%

*“Brakes are much more comfortable and feel perfect”*

**Correct Contents**4%

*“Received everything needed and more”*

**Material Quality**4%

*“Good quality material”*

### **What buyers complain about **

**Pressure**25%

*“High boiling point”*

**Paint Quality**13%

*“This stuff will damage some surfaces like paint or some metals”*

**Instructions/User Manual/Troubleshooting**13%

*“I didn't even look at the directions”*

**Value For Money**13%

*“This is an overpriced small bottle of hydraulic fluid”*

**Size-Overall**8%

*“The larger sized container than most may be more than I needed”*

#### **Top return reasons**- Leak-Proof25% - Compatibility-Overall23% - Value For Money13% - Size-Overall10% - Advertised Vs Actual Product8% - Functionality-Overall4% - Certifications3% - Quality-Overall2% - Material Quality2% - Product Condition1%