Hayes Dominion A4 J-Unit Disc Brake Reviews

Review score: 9.1/10 – Updated November, 2024

Latest Price: £108.99 – Save 46% (RRP: £199.99)

Take a look now to discover what makes Hayes Dominion A4 J-Unit Disc Brake worthy of a review score of 9.1 out of 10.

---

Skip to content:

• Features
• Quality
• Price
• Reviews
• Brand – Hayes
• Videos
• Summary
• Alternatives

---

View reviews at Chain Reaction Cycles

---

Hayes Dominion A4 J-Unit Disc Brake features

Quality

Quality is without doubt one of the most important factors that we consider when buying bikes, parts, accessories or clothing. As you’d imagine it’s especially important when buying Brakes. Let’s take at a look at the sort of things you can look at when trying to ascertain the quality of Hayes Dominion A4 J-Unit Disc Brake.

The first thing is material. Looking at what Hayes Dominion A4 J-Unit Disc Brake is made of will give you a really good idea of the quality overall. Take a look at the specs above and you should be able to see the material. It’s then up to you to decide if it meets your expectation.

Similarly you’ll also want to spend some time looking at the features too. Again the table above, listing the features will give you a really good overview. However you should think about the sort of features that you’d expect when buying new Brakes. It’s worth writing a list of the “must-have” features so that you don’t end up compromising and missing some important features, or alternatively end up buying an unnecessarily high specced product.

There’s also a lot of merit in checking out the brand of the product and looking at the various brands that are selling Brakes. Brands like Hayes are of courses extremely well respected in the cycling community so you know you’re getting a fantastic product with them. But if you’re undecided on your product you should write up a list of brands that you’d be happy to buy. It’s a great way of filtering and narrowing down the number of products when you’re searching.

Next up you’ll want to think about the price and use that as a guide to set your expectations of the quality. If you’re buying the cheapest of the options in the Brakes category you should probably expect it to not be of as good quality as the most expensive. It sounds obvious of course. But this is where you can get a bit clever and use your combination of features, specs, materials and other factors to work together to get a really good quality product at the best price. We often draw up a list of “must-haves” and use these as filters when shopping online so that you’re only seeing products that meet your criteria. You can then sort by Price>Low to get the best deals.

---

Comparing Prices

Price, as you would imagine, is the most popular reason for someone buying one product over another. It is the single most important factor in choosing the majority of products we buy. The same goes for Brakes.

It’s at this stage of the buying process, when you’re looking at different options, that you should set a budget. Do some research to understand how much roughly you can expect to pay for the sort of level of product that you’re looking for. Then match that to your own personal circumstance and how much you can afford to spend. This will really help you in narrowing down the right product for you.

Price of Hayes Dominion A4 J-Unit Disc Brake

So the first aspect of price that we’re going to look at is the price of Hayes Dominion A4 J-Unit Disc Brake.

We run regular scans across the web to find the best prices for the products that we review, from a range of cycling retailers. The best price we managed to find Hayes Dominion A4 J-Unit Disc Brake was over at Chain Reaction Cycles where the price was £108.99 in our latest search.

Based on this price we’ve scored it 9.4 out of 10 for price.

Average price of Brakes

Next we wanted to look at how much you can expect to pay, on average, for Brakes.

We found 171 in the Brakes category over at Chain Reaction Cycles. We looked at the average price of the products within this category and found the average is £122.95, making it below average at £108.99.

It’s sometimes helpful to look at how much the prices can vary. Especially when setting yourself a budget, or when trying to understand just how much you could spend on Brakes. We found that the most expensive product currently available was £499.00, whilst the cheapest we managed to find was £7.99.

With 171 products available we worked out that 72 cost more than Hayes Dominion A4 J-Unit Disc Brake and 98 were cheaper.

Cost of Hayes products

At Chain Reaction Cycles we found 17 products from Hayes, of which 8 were in the Brakes category.

For now though we’re looking at Hayes branded products in all categories. The average price of these products was £63.11 making this product above average.

You’ll also be interested to know that the cheapest Hayes product we found was £8.99 and the highest price we could find from them was £169.99.

Of the 17 from Hayes, 3 were more expensive than Hayes Dominion A4 J-Unit Disc Brake and 13 were cheaper.

How much are Hayes Brakes?

We then wanted to get a bit more specific and only look at Hayes products that are listed in the Brakes category.

The average price of the 8 products that match this search was £105.43, with the cheapest coming in at £29.99 and highest price was £169.99. With the average being £105.43, Hayes Dominion A4 J-Unit Disc Brake comes in above average.

3 products that meet this search were more expensive than Hayes Dominion A4 J-Unit Disc Brake and 4 were cheaper.

---

Hayes Dominion A4 J-Unit Disc Brake Reviews

Reading reviews is an amazing way of getting a good feel for a product without actually being able to try it or see it first.

There are two different types of reviews, and we also recommend reading both.

1. Expert reviews – In the cycle industry there are loads of really reliable trusted resources for expert reviews. For example if you’re looking to buy a new bike, BikeRadar Bike Reviews are great.

2. Customer reviews – these are probably your best resource for information. There’s no finances or influence involved, they’re purely just honest reviews from customers that have bought and used the product. The reason we love customer reviews so much is because no matter if their view is good or bad, there’s a very good chance that it will be honest and unbiased.

Our best advice is to head over to Chain Reaction Cycles and read the Hayes Dominion A4 J-Unit Disc Brake reviews there.

Based on what we’ve seen in terms of reviews for Hayes Dominion A4 J-Unit Disc Brake, it really does look like a great buy. So for the review score, we’ve scored it 8.2 out of 10. The average review score for all products in the Brakes category at Chain Reaction Cycles is 4.4 out of 5.

Owner reviews, as we say, are one of the most important pieces of research that we can do before we buy. So, with that in mind, if you do go on to buy Hayes Dominion A4 J-Unit Disc Brake or another similar product, like Hayes CX 5 Disc Brake F-R 140mm PM reviews or Hayes Prime Comp Disc Brake reviews we’d love you to leave a review in the comments below. It will really help future buyers just like you, when they’re looking to buy Brakes.

---

Brand

As we said in the pricing part of the review, brand is a really important consideration, but especially so when looking to buy Brakes. But as you’re probably already aware, you’re on to a great choice if you do go with Hayes, as they’re a fantastic brand, making amazing products.

---

YouTube Video of Hayes Dominion A4 J-Unit Disc Brake

Below we’ve embedded a video from YouTube where we’ve searched for Hayes Dominion A4 J-Unit Disc Brake reviews.

---

Summary

Overall, we’ve been hugely impressed by the quality, price, reviews and features of Hayes Dominion A4 J-Unit Disc Brake. We’d say that as long as it fits your budget and meets your expectations in terms of features/spec…it’s a really strong contender. That’s why we’ve scored it a massive 9.1/10 overall.

---

Further product details

• Product ID 1: 25010916711
• Product ID 2: 742436UK
• Brand: Hayes
• Model number: 95-36115-K051
• RRP: £199.99
• EAN: 844171074831
• Description: Hayes Dominion A4 J-Unit Disc BrakeThis brilliant disc brake is specifically engineered for MTB use as it gives you powerful and reliable stopping performance. It features a four piston caliper that’s designed especially for the rigors of DH and enduro racing as it meets the demands of the most aggressive trail conditions and riders. Providing a firm engagement between the pads and rotors, its caliper keeps you in full control thanks to its fast and precise braking power.Low-Effort MTB Disc BrakeWhether you’re competing or riding after work with your buddies, this version’s solid lever features a specific pull curve to balance on-demand pressure modulation with ease. As a result, you’ll be able to enjoy its simple and easy to pull design for an effortless braking feel and control as you weave between the trails.Perfect for riders with smaller hands, this SFL (Small Freaking Lever) version makes it incredibly easy to actuate as you carve your way across the mountain. To top it off, its K2 hose is constructed from a woven Kevlar construction to provide the stiffest hose possible for maximum power transmission.Features: Use:¬†MTB Type: SFL (Small Freaking Lever) version Piston: 4-piston Caliper: 74mm post-mount Brake Fluid: DOT 5.1 Hose: K2 hose from woven Kevlar Weight:¬†303g (approx)Buy Hayes Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.
• Full Category: Components > Brakes
• Savings percentage from RRP: 46%
• Size: Front
• Unisex
• 91
• Adult

---

Other options for Brakes

As you’d imagine there are so many options out there when buying Brakes. 171 in fact.

A few of our other favourites that we spotted when researching Hayes Dominion A4 J-Unit Disc Brake included,
Hayes HFX-9-Mag-MX-1 Disc Brake Pads reviews, Hayes Dominion Disc Brake Pads reviews, or we really liked the look of Hayes Hayes Prime Disc Brake Pads reviews as another alternative.