Shimano XT M8120 2x12sp Rear Derailleur Reviews

Review score: 8.7/10 – Updated September, 2024

Latest Price: £99.99 (RRP: £99.99)

Take a look now to discover what makes Shimano XT M8120 2x12sp Rear Derailleur worthy of a review score of 8.7 out of 10.

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Skip to content:

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

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View reviews at Chain Reaction Cycles

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Shimano XT M8120 2x12sp Rear Derailleur 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 Derailleurs. Let’s take at a look at the sort of things you can look at when trying to ascertain the quality of Shimano XT M8120 2x12sp Rear Derailleur.

The first thing is material. Looking at what Shimano XT M8120 2x12sp Rear Derailleur 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 Derailleurs. 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 Derailleurs. Brands like Shimano 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 Derailleurs 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.

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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 Derailleurs.

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 Shimano XT M8120 2x12sp Rear Derailleur

So the first aspect of price that we’re going to look at is the price of Shimano XT M8120 2x12sp Rear Derailleur.

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 Shimano XT M8120 2x12sp Rear Derailleur was over at Chain Reaction Cycles where the price was £99.99 in our latest search.

Based on this price we’ve scored it 8.2 out of 10 for price.

Average price of Derailleurs

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

We found 349 in the Derailleurs category over at Chain Reaction Cycles. We looked at the average price of the products within this category and found the average is £69.07, making it above average at £99.99.

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 Derailleurs. We found that the most expensive product currently available was £670.00, whilst the cheapest we managed to find was £2.99.

With 349 products available we worked out that 65 cost more than Shimano XT M8120 2x12sp Rear Derailleur and 282 were cheaper.

Cost of Shimano products

At Chain Reaction Cycles we found 854 products from Shimano, of which 122 were in the Derailleurs category.

For now though we’re looking at Shimano branded products in all categories. The average price of these products was £94.29 making this product above average.

You’ll also be interested to know that the cheapest Shimano product we found was £1.00 and the highest price we could find from them was £1999.99.

Of the 854 from Shimano, 190 were more expensive than Shimano XT M8120 2x12sp Rear Derailleur and 645 were cheaper.

How much are Shimano Derailleurs?

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

The average price of the 122 products that match this search was £54.56, with the cheapest coming in at £2.99 and highest price was £509.99. With the average being £54.56, Shimano XT M8120 2x12sp Rear Derailleur comes in above average.

15 products that meet this search were more expensive than Shimano XT M8120 2x12sp Rear Derailleur and 105 were cheaper.

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Shimano XT M8120 2x12sp Rear Derailleur 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 Shimano XT M8120 2x12sp Rear Derailleur reviews there.

Based on what we’ve seen in terms of reviews for Shimano XT M8120 2x12sp Rear Derailleur, it really does look like a great buy. So for the review score, we’ve scored it 9.5 out of 10. The average review score for all products in the Derailleurs category at Chain Reaction Cycles is 4.3 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 Shimano XT M8120 2x12sp Rear Derailleur or another similar product, like Shimano RD-M820 Saint 10 Speed Jockey Wheels reviews or Shimano RD-7900 Dura-Ace 10 Speed Jockey Wheels 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 Derailleurs.

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Brand

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

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YouTube Video of Shimano XT M8120 2x12sp Rear Derailleur

Below we’ve embedded a video from YouTube where we’ve searched for Shimano XT M8120 2x12sp Rear Derailleur reviews.

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Summary

Overall, we’ve been hugely impressed by the quality, price, reviews and features of Shimano XT M8120 2x12sp Rear Derailleur. 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 8.7/10 overall.

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Further product details

• Product ID 1: 25010917677
• Product ID 2: 743817UK
• Brand: Shimano
• Model number: RDM8120SGS
• RRP: £99.99
• EAN: 4550170443658
• Description: Shimano XT M8120 2x12sp Rear DerailleurThis high-quality rear mech is ready to tackle any trail as it delivers quick and precise shifting performance. Enjoy faster and slicker gear changes thanks to this stunning model’s low-profile design which stabilises chain tension in low gears. Furthermore, its pulley cage bumper aids towards a silent running drivetrain while keeping it firm on rough terrain.Features: Use: MTB Speed: 12 speed Size: Long Cage Bushings: 4 fluoric coated link bushings Compatible Chain: HG 12 speed Low Sprocket Max: 45T Low Sprocket Min: 45T Max Front Difference: 10T Bearings: Sealed pulley bearings Pulley Teeth: 13T Spring: Shimano Shadow RD+ Top Sprocket Max: 10T Top Sprocket Min: 10T Total Capacity: 45T Technologies:Hyperglide+: Hyperglide+ drivetrain’s redesigned cassette and chain promotes the next generation of MTB riding by enhancing speed, shifting efficiency and smoothness over any terrain. It will help kickstart the next generation of mountain bike riding by introducing continuous pedalling over virtually any terrain. This revamped drive system and dedicated chain deliver fast shifting, efficient power transfer and chain stability like you’ve never experienced before. It helps riders adapt to drastically changing trail conditions by precisely judging the optimal shifting moment for consistently smooth operation. Shimano Shadow RD+: Less distraction quiet drive train. Rear derailleur stabiliser reduces chain slap. Simple solution for chain drop. Lighter and more efficient than roller type chain device. A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.
• Full Category: Components > Derailleurs
• Size: Long Cage
• Unisex
• 0
• Adult

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Other options for Derailleurs

As you’d imagine there are so many options out there when buying Derailleurs. 349 in fact.

A few of our other favourites that we spotted when researching Shimano XT M8120 2x12sp Rear Derailleur included,
Shimano RD-M410 Alivio 8 Speed Jockey Wheels reviews, Shimano RD-6700 Ultegra 10 Speed Jockey Wheels reviews, or we really liked the look of Shimano RD-M370 Altus 9 Speed Jockey Wheels reviews as another alternative.