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Topeak Ninja Master+ Cage SK+



Very secure bottle cage whatever the terrain, with added versatility for carrying accessories
Holds a bottle securely
Compatible with Topeak Ninja Master+ accessories
Flexibility can hamper quick bottle grabs

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 Ninja Master+ Cage SK+ is a simple yet effective side-loading bottle cage for compact frames, with the added bonus of being able to accommodate various Topeak accessories. It's cheap and cheerful, if a little bit on the flexible side.

This Topeak cage is made from polymer, which allows it to flex a lot without being fragile. This means it can adapt to various size and shaped bottles while providing a very secure grip on both full and empty containers.

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The downside of that flex is that it can be a little fiddly to get the bottle back in the cage while riding, and, to a lesser extent, removing it. The side-loading ability makes things a bit easier, though, and you soon develop the knack of lining the bottle up.

This particular model is known as the Lefty, as in you load it from the left; there is a reversible option that'll do left and right loading, or a right-handed option.

The design makes it ideal for compact frames or those that are full up with frame bags. I've taken to using side-loading cages on my gravel bike for this reason, and I found the Topeak to be a good solution, especially considering how firmly the cage holds bottles on very rough terrain. I never had to worry about it jettisoning my drink on fast, rocky descents.

The insert used to secure the bottom of the bottle can be swapped out for one that comes with one of Topeak's Ninja Master+ accessories, such as the Toolbox PT30 multi-tool (review to come), CO2 inflator kits or innertube holders, for instance.

2021 Topeak Ninja Master Plus Cage SK Plus 3.jpg

It certainly brings plenty of versatility to the cage, meaning that you don't always have to carry your supplies or tools in your pockets.

At £9.99 it's pretty cheap, too – less than Giant's Airway Dual Side cage (£12.99) and Bontrager's Side Load cage at £14.99.

> Read more reviews of bottle cages here

There's a certain knack to getting the bottle in and out of this cage quickly, but it does hold bottles very securely. It's cheap, cheerful and rather effective.


Very secure bottle cage whatever the terrain, with added versatility for carrying accessories

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Make and model: Topeak Ninja Master+ Cage SK+

Size tested: n/a

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?

Topeak says, "An easy-to-grab, side access water bottle cage that firmly holds your bottle, even on the roughest terrain. It's also ideal for full suspension or smaller sized frames where bottle access can be challenging. Allows you to add tools, CO2 inflator kit or inner tube holder with interchangeable Cage Mount and is compatible with all Ninja Cage accessories for basic repair and maintenance."

It's not that easy to grab a bottle to start with, but you soon learn a way to do it smoothly.

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

Topeak lists:

MATERIAL: Engineering grade polymer

OUTER DIAMETER: Fits standard water bottles

COMPATIBILITY: Ninja Master+ Cage accessories

SIZE: 14.8 x 8.4 x 8.1 cm / 5.8 x 3.3 x 3.2in

Rate the product for quality of construction:
Rate the product for performance:
Rate the product for durability:
Rate the product for weight (if applicable)
Rate the product for value:

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

Holds a bottle well on all types of terrain.

Tell us what you particularly liked about the product

Very secure.

Tell us what you particularly disliked about the product

Flex can make it tricky for fast bottle grabs.

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

It's cheaper than most, like the two I mention in the review.

Did you enjoy using the product? Yes

Would you consider buying the product? Yes

Would you recommend the product to a friend? Yes

Use this box to explain your overall score

At a penny under a tenner the Topeak is a good value quality item and will hold your bottle very securely. The ability to work with Topeak's accessories is a bonus.

Overall rating: 8/10

About the tester

Age: 42  Height: 180cm  Weight: 76kg

I usually ride: This month's test bike  My best bike is: B'Twin Ultra CF draped in the latest bling test components

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, club rides, sportives, fixed/singlespeed,

As part of the tech team here at F-At Digital, senior product reviewer Stu spends the majority of his time writing in-depth reviews for, and ebiketips using the knowledge gained from testing over 1,500 pieces of kit (plus 100's of bikes) since starting out as a freelancer back in 2009. After first throwing his leg over a race bike back in 2000, Stu's ridden more than 170,000 miles on road, time-trial, track, and gravel bikes, and while he's put his racing days behind him, he still likes to smash the pedals rather than take things easy. With a background in design and engineering, he has an obsession with how things are developed and manufactured, has a borderline fetish for handbuilt metal frames and finds a rim braked road bike very aesthetically pleasing!

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