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Blackburn Central Seatpost Rear Rack



High quality, tough, well made and with a lifetime guarantee – but quite expensive for what it is
Quick and easy to fit
10kg capacity
Carries kit without issue
Tough and well made
Lifetime guarantee
No pannier-supporting side rails

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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The Blackburn Central Seat Post Rear Rack is a tough and well-made product that allows you to carry luggage on a bike that doesn't have fittings for a rear rack. This makes it particularly handy for commuting, when you can do away with a backpack for carrying heavy loads – your lock, for instance. It's also reasonably light and I don't doubt it will work effectively and last for years, but it only works with a beam bag or rack bag rather than panniers, and it's expensive for what it is.

For more options, check out our guide to the best racks and panniers.

First off, Blackburn makes it clear that this rack isn't compatible with non-round or carbon seatposts, though I reckon you might get away with a Giant alloy D-Fuse post as its round front would give you a sufficiently large clamping area.

2023 Blackburn Central Seatpost Rear Rack clamp 2.JPG

It's quick and easy to fit, too. Grease up the four M6 hex bolts (you do grease all bolts, don't you?) for which Blackburn even supplies a 4mm hex key. I then used a torque wrench (you do use a torque wrench, don't you?) to tighten them to the minimum recommended 6.5Nm, which I found was sufficient to keep the rack stable even with a quite heavily loaded bag. If this isn't enough, you could go up to the recommended 9Nm maximum.

2023 Blackburn Central Seatpost Rear Rack - seat post clamp 2.jpg

It's designed to work with seatposts 22-32mm in diameter and it comes with a tough rubber sleeve to stop it scratching the post.

2023 Blackburn Central Seatpost Rear Rack - seat post clamp rear.jpg

Once fitted it's just a case of strapping your bag to it; Blackburn makes its own Local Trunk Bag but I used it with the Altura Heritage Rackpack.

2023 Blackburn Central Seatpost Rear Rack bag 1.jpg

The clamp is quite compact, and with my saddle in its usual position my thighs didn't make contact with it when I was riding, apart from very occasionally when I was climbing and shifted my position on the saddle.

2023 Blackburn Central Seatpost Rear Rack clamp 1.JPG

The rack has a healthy 10kg capacity, and I loaded my bag with a couple of locks and some tools to get it up to a weight approaching that. It stayed in place well without any swaying, though I did get the occasional minor noise from it.

2023 Blackburn Central Seatpost Rear Rack bag 2.JPG

I think this comes from the 'flippability' that Blackburn has built into the rack. A large hex bolt goes through the rack to attach it to the solid spur, but as it's a single bolt rather than a pair, and as it's not a totally flush-fitting connection, there can be a tiny amount of metal-on-metal movement over rougher surfaces. Hence the noise.

2023 Blackburn Central Seatpost Rear Rack spur.jpg

As well as being able to turn the rack upside-down for compatibility with different bikes, saddles and bags, you can also move the rack's mounting section back and forth along the central rail, which is then tightened using a pair of hex bolts. The bolts do scratch the anodised surface when you do this, but as this is something you're not likely to do very often, it's not a major issue.

2023 Blackburn Central Seatpost Rear Rack flipped 1.JPG

And it works. Simple as that. You can feel that the rack is there when it's loaded, but it doesn't have much impact on the handling, though the lower you can carry the weight, the better.

I'm a big fan of carrying as much as possible on the bike rather than on my back, and a recent pulled muscle in my lower back only further emphasised the advantage of doing this. With a lock alone weighing over a kilo, you can easily shed quite a bit of weight.

This makes it a practical option if you're a commuter with a bike that doesn't have its own luggage-carrying capacity. And with a lifetime guarantee, there's no reason why you wouldn't get years of use out of it.

> 15 easy ways to carry stuff on your bike

The only potential drawback for commuting is that it is only compatible with beam bags rather than panniers as it doesn't have side supports – something to bear in mind if you want to carry a laptop, for example.


There's no getting away from the price of this Blackburn rack, but it's pretty similar to that of the Topeak MTX Beam Rack E Type that Matt tested. The Topeak has a slightly lower capacity – 9kg – and is only compatible with Topeak's own luggage, but it is another high-quality option for a bike without any rear rack fittings.

Another option is the SKS Infinity Universal MIK Luggage Rack, which clamps to your bike's seatstays (non-carbon only) and allows you to carry a beam bag or panniers. Josh rated it very highly when he tested it, but it will cost you £120.

Late last year I reviewed the Elops Seatpost Pannier Rack 500. It's a little heavier than the Blackburn, but that extra weight is accounted for by its side rails, which mean you can use it with panniers or a rack bag. Like the Blackburn it's a fit-and-forget item and tough as old boots, but as well as being more versatile, at just £24.99 it's less than half the price.


This is a well-made and tough luggage-carrying option that you can flip for extra versatility, but as it's only compatible with beam bags rather than panniers, in spite of its high quality I don't feel it offers you quite enough for your money.

> Cycling luggage for beginners: find out the best ways to carry stuff on your bike


High quality, tough, well made and with a lifetime guarantee – but quite expensive for what it is test report

Make and model: Blackburn Central Seatpost Rear Rack

Size tested: 22-32 mm

Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

The Blackburn Central Seatpost Rear Rack is designed to allow you to carry baggage on bikes with no rear rack mounts.

Blackburn says: "Perfect for bicycles with no braze-ons, the Central Rack mounts to your seat post. It fits large and small bikes - the beauty of mounting to a seat post is that the Central Rack will mount to just about any size of bicycle."

I found it solid and simple to use, allowing me to carry loads on my bike rather than on my back, which considering the state of my back, has to be good thing!

Tell us some more about the technical aspects of the product?

Blackburn says:


Versatility and simplicity is the virtue of this design. The rack deck can adjust fore and aft, but also flip over to better fit different sized bikes.

Capacity: Up to 22lbs/10Kg

Mounting Options: 4-Bolt Seatpost Mount

Product Weight: 997 grams

Rate the product for quality of construction:

The construction quality felt very good – and a lifetime guarantee supports that feeling.

Rate the product for performance:

I fitted it easily. It held my loads without issue. Simple as.

Rate the product for durability:

It feels tough and I've no doubt it would easily survive daily scrapes and bumps.

Rate the product for weight (if applicable)

It weighs around 750g, which (unloaded) wasn't really noticeable on a c10kg bike, so I left it fitted the whole time. On a weight-weenie special you'd probably notice it, but is that really its main market?

Rate the product for value:

While it is a high-quality product with a welcome lifetime guarantee, it's very expensive considering it doesn't have side rails to support panniers.

Tell us how the product performed overall when used for its designed purpose

It performed well – doing exactly what it was designed to do.

Tell us what you particularly liked about the product

It allowed me to take weight away from my back and onto my bike – and if you have back issues (as I do on) that has to be a good thing.

Tell us what you particularly disliked about the product

It doesn't come with side rails that support panniers. And its 'flippability' means there's an occasional creak from the rack when you're riding.

How does the price compare to that of similar products in the market, including ones recently tested on

It's more than twice as expensive as the similar-ish Elops seatpost pannier rack I tested last year, but that comes with side rails included rather than as an extra. And while the Blackburn has more of a high-end feel about it, I don't feel that's enough to justify the extra expense.

The Topeak MTX Beam Rack is another similar rack at a similar price, though it's only compatible with Topeak's own bags.

Did you enjoy using the product? Yes

Would you consider buying the product? No – I don't feel it does enough for the money.

Would you recommend the product to a friend? No – as above.

Use this box to explain your overall score

It certainly works as intended, it's a tough and well-made product and I don't doubt its overall construction quality either – which is backed up by a lifetime guarantee. But I don't feel it's doing enough for the money. If I was parting with my own cash I'd go for the Elops that comes with side rails for panniers and costs much less.

Overall rating: 6/10

About the tester

Age: 57  Height:   Weight:

I usually ride: 2018 Giant TCR Advanced 2 with Halo Carbaura disc wheels  My best bike is:

I've been riding for: Over 20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: time trialling, commuting, touring, sportives, general fitness riding,

Simon has been riding since he was a nipper and more seriously since his university days way back when. He has been a cycling journalist for more than two decades and reckons he has upwards of 200,000 miles in his legs. In his time he has competed (in the loosest sense of the word) in time trials, triathlons, duathlons and a lone cyclo-cross; he has been a long-distance commuter for decades – on road and canal towpath. He has also toured extensively in Laos, Cambodia, Thailand, Malaysia and has ridden 4,000km from Cairns to Melbourne in Australia, and the 700km from Picton to Dunedin in New Zealand. If his legs carry on working, he'd like to ride from Perth to Sydney...

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amazon22 | 1 month ago

Understandably, you say this rack isn't compatible with non-round or carbon seatposts, yet one of the two bikes pictured with it clamped to their seatpost is a Mason with a Penta carbon seat post.

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