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Aerozine's machined headset spacers might not make you climb or sprint any faster but they do bring a bit of bling and adjustment to your bike.
Unless you're a member of the 'slam that stem' brigade you're going to need to pack the space between headset and stem with something. Why go with something dull like carbon fibre when you can have anodised alloy? Aerozine's spacers come in a range of colours: blue, black, silver, pink, red, gold, orange or green, and three height options: 5mm, 10mm or 20mm. The pack here comprises two 5mm spacers and a 10mm costing £6.99.
The Aerozine spacers are CNC machined from 6061-T6 alloy to create a scalloped profile and a smart touch is that the shape is maintained throughout the size range, e.g. the 10mm spacer looks like two 5mm. I'm guessing it could be only me gettimg excited about this, though, thanks to my very mild case of OCD when it comes to bike bits.
Overall they are nicely finished with all sharp edges removed and no burrs leftover from the machining process. The price is on par with other anodised alloy spacers and I think these are some of the best looking ones out there.
The wide range of colours should mean there's one to suit your bike though they'll only fit if you have a 1 1/8in steerer.
Smart looking finishing touch to any bike with plenty of options
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Make and model: Aerozine Coloured Headset Spacers
Size tested: Blue, 1 1/8
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?
For any bike with a 1 1/8in steerer that needs a bit of fine tuning between stem and headset.
Tell us some more about the technical aspects of the product?
-Black, Silver, Blue, Pink, Red, Gold, Green, Orange colour options
The 5mm measures 5mm with a internal diameter that is a snug fit over the steerer tube.
Anodising seems hard wearing.
The machined profile and anodised finish are worth the cost.
Tell us how the product performed overall when used for its designed purpose
They do the job.
Tell us what you particularly liked about the product
The machined shape.
Tell us what you particularly disliked about the product
My OCD says that the 10mm could do with two etched logos to match two 5mm spacers stacked on top of each other.
Did you enjoy using the product? Yes.
Would you consider buying the product? Yes.
Would you recommend the product to a friend? Yes.
Age: 35 Height: 180cm Weight: 76kg
I usually ride: Whatever needs testing or Genesis Flyer, fixed of course! My best bike is: Kinesis T2 with full Centaur Red
I've been riding for: 10-20 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 Hub here at F-At Digital, our senior product reviewer Stu uses the knowledge gained from putting well over a 1,000 products through their paces (including hundreds of bikes) to write in-depth reviews of a huge range of kit. After first throwing his leg over a race bike back in 2000, Stu's ridden more than 160,000 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. Although, as he spends a fair bit of his time reviewing ebikes these days he's becoming an expert in letting the motor take the strain. He's also waiting for 23mm race tyres to make a comeback!