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Aerozine Ultralight Seat Post Clamp



Weight weeny seatclamp available in loads of colours and two sizes

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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Carrying on the anodised colour coding of their other components this XSC1.0 seatclamp from Aerozine is about as minimal as you get. One for the weight weenies.

The XSC1.0 is machined from 7075 alloy which removes about as much material as possible to still allow it to do its job. What's left weighs just 8g.

It comes in the two most common seat tube diameters of 31.8mm and 34.9mm. Providing you haven't got too thick a paintjob it'll slip on snugly, stopping as the internal lip rests on top of the tube.

Plenty of material has been left around the bolt area to resist cracking from loosening and tightening though you don't have to apply too much torque as the clamp provides plenty of pressure for the seatpost and frame interaction.

It's priced at £15.99 which can be considered expensive when you can get cheap cast clamps for a few quid but up against other super light machined clamps it's about on the money.

Overall the Aerozine XSC1.0 is a neat finishing product for customising your frame. It looks good and fits well and on the whole is priced well too. The option of eight various colours means one should match your bike too.


Weight-weenie seatclamp available in loads of colours and two sizes

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Make and model: Aerozine Ultralight Seat Post Clamps

Size tested: 31.8mm

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 XSC1.0 seatclamp is intended for road racing, XC and All Mountain and it certainly feels strong enough for all kinds of applications. Overall though its a nice finishing touch to a frame.

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

Material: 7075 Alloy CNC Machined

Dia: 31.8mm, 34.9mm

Weight: (incl. bolt) 8.0g

Finish: Black, Silver, Blue, Pink, Red, Gold, Orange, Green

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

It looks great and fits well providing plenty of grip.

Tell us what you particularly liked about the product

The machined minimalistic look

Tell us what you particularly disliked about the product

The similar Planet X version is just a tenner, not as many colours though

Did you enjoy using the product? Yes.

Would you consider buying the product? Yes.

Would you recommend the product to a friend? Yes.

Anything further to say about the product in conclusion?

It certainly finishes off a frame nicely and works with the rest of the Aerozine range.

Overall rating: 7/10

About the tester

Age: 36  Height: 180cm  Weight: 76kg

I usually ride: Kinesis T2  My best bike is: Kinesis Aithien

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,


With 20 years of road cycling and over 150,000 miles in his legs it's safe to say Stu is happiest when on the bike whatever the weather. Since writing his first review for back in 2009 he has also had a career in engineering including 3D-CAD design and product development, so has a real passion for all of the latest technology coming through in the industry but is also a sucker for a classic steel frame, skinny tyres, rim brakes and a damn good paintjob.
His fascination with gravel bikes is getting out of control too!

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