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Prime Primavera Aero Carbon Handlebar



Updated aero bar is still light, still stiff and still a great deal
Great drop for sprinting
Great price
Horizontal portion of the drop could be longer
226g Recommends

This product has been selected to feature in recommends. That means it's not just scored well, but we think it stands out as special. Go to recommends

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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Prime's new Primavera Carbon Aero Handlebar is, like its forerunner, a great upgrade option at an attractive price. The drop is slightly shallower with a more ergonomic shape that's excellent for sprinting, and the price is still very good.

I reviewed the original Primavera Carbon Handlebar back in 2019, and I'm happy to see a lot of features I loved back then carried over to this one. Still present and correct are the easily-accessible drops, the aero top section, huge holes for internal cable routing, and the space around the stem clamp for a computer mount and light.

2021 Prime Primavera Aero Carbon - rear centre.jpg

Installing the bar is pretty simple. Those large holes for the cables make life very easy – especially if you're installing hydraulic brake hoses with mechanical shift cables – and there's a hole at the back of the clamp area for electronic shift wires heading through the stem.

2021 Prime Primavera Aero Carbon - centre.jpg

Like the older model, wrapping bar tape is straightforward too, though you need to take care has when you finish the wrap at aero top section. A bit of time with the scissors and a clean finish is achievable.

46.3% more numbers

Prime says the new bar is 13% lighter, 29.5% stiffer vertically, 11% stiffer horizontally, and 21.4% stiffer rotationally. Overall, it's apparently 20.6% stiffer with 16% less deformation.

So, having calibrated my arms to within 0.1% of maybe, I headed off for some test rides. In truth I found the original bar plenty stiff enough, and with a weight of just 64kg and a maximum sprint power of 1150W, I'm certainly not the most powerful rider either.

Ride feel

I don't feel much has changed. The stiffness I liked about the old model is still there; stronger riders might find this new model gives them a slightly more solid base for big efforts, but the important thing for me is that Prime hasn't ruined the bar by making it harsh.

The road buzz that can hamper stiff carbon components isn't present here. Even with gloveless hands resting on the bare carbon of the aero top section, I don't feel much buzz.

2021 Prime Primavera Aero Carbon - logo detail.jpg

The drop section seems to be a bit more angular than the old model, though this is something I quite like, especially for getting a tight grip of the drops to get my head down and open up a sprint.

2021 Prime Primavera Aero Carbon - top.jpg

The shape gives a tight and stable hold on the bar that really helps you get planted, though one knock-on effect is that the drop transitions into the flat end very late. This leaves a very stubby flat section – I would have liked to see it extend another inch or so for a more comfortable hand position.

2021 Prime Primavera Aero Carbon - drop.jpg

Fitting accessories on either side of the stem is still easy, even with a chunky stem like the Zipp Sprint SL holding it on, and – for what it's worth – the weight is marginally lower too. Our 38cm test bar weighs in at 226g.

> 13 of the best cycling drop handlebars — how to buy the perfect bars

It's very good to see Prime has kept the price to £149.99, so it's still one of the cheapest aero handlebars on the market. Vision's Metron Aero bar is £351, for instance, so I'm sticking with my thoughts on the old version: this is an upgrade that's worth the money.


Updated aero bar is still light, still stiff and still a great deal

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Make and model: Prime Primavera Aero Carbon Handlebar

Size tested: 38cm

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?

Prime says: "Building on the success of the original Primavera handlebar, the all-new Primavera Aero Handlebar is lighter, stiffer and stronger, yet carries over many of the features that made the original so popular.

This high-quality aero handlebar features a high modulus carbon fibre construction, which makes it super-light at only 228g for the 42cm option. Its carbon build also ensures that riders benefit from exceptional strength, stiffness and precise handling when both training and competing."

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

Material: Carbon Fibre

Use: Road, Triathlon and Time Trial

Diameter: 31.8mm

Reach: 76.5mm

Drop: 122mm

Cable Routing: Internal, Shimano Di2 compatible

Flared Aero Tops

Width measured centre to centre

Weight: 228g (42cm option)

Product Data

Time Trial: Yes

Road: Yes

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 comfort (if applicable)
Rate the product for value:

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

Very well. It is stiff for sprints and hard efforts, but also comfortable.

Tell us what you particularly liked about the product

The hand position for sprinting is great. It really lets you wrench on the drops with everything you've got.

Tell us what you particularly disliked about the product

Nothing really.

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

Pretty much half the price of most other carbon aero bars.

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

It's a stiff and comfortable aero bar that smokes the competition on price – an easy nine.

Overall rating: 9/10

About the tester

Age: 24  Height: 177cm  Weight: 62kg

I usually ride: Cannondale Supersix Di2  My best bike is:

I've been riding for: 5-10 years  I ride: Most days  I would class myself as: Expert

I regularly do the following types of riding: road racing, time trialling, cyclo cross, commuting, club rides, general fitness riding, I specialise in the Cafe Ride!

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