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review

Basso Diamante SV Disc Record Hydro Shamal Enigma

8
£7,499.00

VERDICT:

8
10
Great ride quality and handling from this beautiful piece of Italian craftmanship
Elegant styling
Great ride quality
Smooth gear shifting
Not an amazing weight for the money
No rim brake model in the range
Weight: 
8,190g

At road.cc 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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With the Basso Diamante SV, the company went back to the drawing board, and this is the result: an ultra-smooth, sleek aero machine, thanks to full internal cable routing and an exercise in hiding pretty much anything that pokes its head out into the wind. Some may mourn the ditching of the rim brake version, though.

If you're in the market for a £7,000 machine, check out our guide to the best road bikes – from £300 to over £13,000…

Back in 2020, Jack reviewed the Diamante SV and was impressed, although he did say it was showing its age a little compared with the current crop of aero race bikes on the market.

> Buy now: Basso Diamante SV Disc Record Hydro Shamal Enigma for £7,499 from Chicken Cyclekit

Basso must have noticed that too, as what you see in this latest version of the Diamante SV is a focus on making it more aero, with tweaks throughout the frame, such as the fully integrated cabling for a very clean front end and the shape of the tubing.

2022 Basso Diamante SV Disc - riding 4.jpg

It's not just wind tunnel speed that Basso has been chasing, though. It's also focused on making the bike faster in the real world thanks to larger tyre clearances so it can be ridden faster on typical less-than-perfect road surfaces, adding more compliance in the frame for less rider fatigue, and easing the geometry just a touch, making it easier to handle for the non-racers among us.

Don't go thinking that the Diamante SV has been dumbed down, though. Not at all. This is still very much a performance machine.

Ride

First things first, for this kind of money this SV isn't exactly light compared with some of the competition. Canyon's Ultimate CF SLX 8 Di2 (£6,199) weighed in at 7.27kg on our scales – that's almost a kilo lighter than the Basso and it's got an electronic groupset that adds weight.

Merida's Scultura Team is also a lot lighter at 7.1kg, fitted with Shimano Dura-Ace Di2, for £7,750.

While I often say not to get too hung up on overall weights, an extra kilogram is noticeable when climbing and accelerating, with performance ever so slightly blunted.

2022 Basso Diamante SV Disc - riding 3.jpg

That aside, the SV still feels sharp off the line or when launching into a sprint. Basso might have brought in that extra compliance, but it is not noticeable here.

In or out of the saddle, the SV feels responsive, especially around the bottom bracket area where there is no flex to speak of when hammering the pedals around. The chainstays aren't as bulky as I've seen on some aero bikes, but power transfer to the rear wheel is still controlled, with everything feeling tight back there.

2022 Basso Diamante SV Disc - riding 2.jpg

Even at high speeds the Diamante SV is easy to ride. The head angle is slackened off a bit compared with many peloton-ready bikes, which makes it less of a handful, but there is still enough precision to cope with the technical stuff and to have some fun in the bends.

Frame stiffness is definitely there but it isn't all shake and rattle, with a decent level of shock absorbance, which also helps make the SV feel planted and boost rider confidence.

This version of the SV has a bigger stack height and less reach than the previous version Jack tested (same size frame), so this one isn't as aggressive in terms of the riding position. I could still get low in the drops, and the overall position felt aero and racy enough, but if you really want that low-slung feel then the SV might have lost that slight edge for you.

Personally, I found the Diamante SV a good compromise between speed machine and comfortable everyday road machine.

Even on rough back lanes or in the wet, the Basso feels stable, and I found it a pleasure to ride for short lunchtime blasts and longer rides at the weekend in equal measure.

The slender seatstays help with the comfort as does the 3B seatpost which absorbs vibrations thanks to a rubber gusset surrounding the seatpost.

2022 Basso Diamante SV Disc - seat tube junction.jpg

Overall, from a rider's point of view I think Basso has been clever with the latest Diamante SV. It's created a bike that is still fast, with great handling and a comfortable ride, without losing the feedback and involvement that make it feel like it is truly in tune with you and the road.

Frame and fork

Basso's bikes are handmade by its own staff in Italy, so the SV isn't some mass-produced frameset from the Far East – not that there is anything wrong with them.

Basso says that what it is creating isn't the lightest or most aerodynamic bike on the marketplace, but a balance of both, along with handling, performance and cycling pleasure.

2022 Basso Diamante SV Disc - UCI sticker.jpg

Having this in-house approach allows Basso to build the SV in more sizes than many brands. Because of the cost of the moulds for the carbon fibre, many limit their line-ups to five sizes, and some as few as three, whereas here there are eight to choose from.

Each frame size has the carbon fibre layup tweaked to provide the best balance of comfort and stiffness.

The biggest change for this current model compared with the previous is the lack of compatibility with rim brakes, going disc only. If you want rim brakes, you'll need to go for the standard Diamante that I reviewed last year.

2022 Basso Diamante SV Disc - front disc brake.jpg

By doing this Basso has been able to up the tyre clearance to 32mm (rim brakes are limited to 28mm with dual pivot callipers), which has included a new OpenFlow fork design. Basso says this opens up the space around the rim and tyre for increased airflow to cut drag.

2022 Basso Diamante SV Disc - clearance.jpg

Bigger tyres increases comfort too.

2022 Basso Diamante SV Disc - seat stays.jpg

As you can see from the photos, all the cables and hoses run internally from the integrated handlebar/stem through the frame and fork, which also means the SV is compatible with both mechanical and electronic/wireless groupsets without any unsightly entry and exits points being left empty.

2022 Basso Diamante SV Disc - front.jpg

There are also obvious aero tweaks such as the way the seat tube closes up some of the gap around the rear wheel, and the way the head, top and down tubes all flow into one section at the front.

2022 Basso Diamante SV Disc - rear.jpg
2022 Basso Diamante SV Disc - head tube.jpg

The seat clamp design is also quite clever. The 3B Gen 2 clamp system uses three screws that go through a steel plate into the back of the frame. This design keeps the seatpost secure and the frame section is completely smooth.

2022 Basso Diamante SV Disc - seat post bolt.jpg

All of this is finished off with a paintjob that incorporates a 3D structure of ceramic nano particles – to create a less porous and more compact finish that is more uniform than conventional paint and less prone to drag, apparently.

2022 Basso Diamante SV Disc - fork detail.jpg

The geometry for this 53cm frameset means a 545mm top tube, 138mm head tube and 530mm seat tube. The seat angle sits at 74 degrees while the head angle is 72.3 degrees. The stack figure is 560mm, with 384mm for the reach.

Groupset

The Diamante SV is available in a range of builds at various prices, as well as just a frameset for £3,099.

This model comes with a Campagnolo Record groupset, and very nice it is too.

Before I spent all of my time on test bikes and rode my own, I had them all built up with Campagnolo groupsets, purely because I love the shape of the hoods. Their swoopy nature suits my hands perfectly, and even though all of my shifters were for rim brakes, Campagnolo has managed to maintain the shape on its hydraulic levers too.

2022 Basso Diamante SV Disc - shifter 2.jpg

The thumbshifters on the inside of the hoods might feel odd at first if you're more used to Shimano or SRAM's shifter systems, but their position is spot on for use on the hoods and from the drops.

2022 Basso Diamante SV Disc - shifter.jpg

The shifting action is light and precise, while the power from the brake callipers and rotors is smooth and easily modulated.

2022 Basso Diamante SV Disc - rear disc brake.jpg

Finishing kit

Basso's stem and handlebar are smart looking, and I got on well with the flat aero top section of the bar. It's very comfortable and can easily be ridden on without tape.

2022 Basso Diamante SV Disc - stem.jpg

Our review bike came with a Prologo saddle, a short design that just happens to be one of my favourites. I love the shape of it, and its firm but plush padding.

2022 Basso Diamante SV Disc - saddle.jpg

Wheels and tyres

As for the wheels, well Campag has provided some more carbon bling to complement the groupset in the shape of a set of its Shamals.

2022 Basso Diamante SV Disc - tyre and rim.jpg

With a 21mm internal rim width they are well suited to wider road tyres like the 28mm Schwalbe One Performance tubeless tyres fitted, and the 32mm maximum that the Diamante SV will accept.

The front rim is 35mm deep, the rear is 40mm, which gives you a wheelset that is a bit of an all-rounder. Shallow enough for windier days or heading into the mountains, with just enough of an aero edge for those faster sections.

2022 Basso Diamante SV Disc - rim.jpg

They have a claimed weight of 1,585g, so light, but not competition leading.

Value

This is a big money build at £7,499, but you are getting one of Campagnolo's top-end groupsets, wheels and a handmade carbon fibre frameset.

Cervelo's R5, which we tested fitted with a SRAM Force eTap AXS groupset, will set you back £8,599, for comparison.

If you want the Diamante SV with an electronic groupset you are looking at £8,949 for Shimano Dura-Ace Di2, or £7,199 for Ultegra Di2.

Compare that with Pinarello's Dogma F – with Ultegra Di2 it'll cost you £9,500, and that's the cheapest model in the UK line-up.

Conclusion

Overall, the Diamante SV isn't exactly what you call cheap, but when you take everything into consideration and look at some of the opposition it's not a bad price considering the handbuilt quality. I like the geometry too. A few of the measurements might have been made less aggressive than the previous model, but on the whole the SV is still a high-performance road bike with a comfortable edge.

Verdict

Great ride quality and handling from this beautiful piece of Italian craftmanship

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road.cc test report

Make and model: Basso Diamante SV Disc Record Hydro Shamal Enigma

Size tested: 545mm

About the bike

List the components used to build up the bike.

Basso's UK distributor Chicken Cyclekit lists:

Components: Campagnolo Record 12x Hydro

Chainset: Campagnolo Record 12x

Disc Brakes: Campagnolo Record Hydro

Cassette: Campagnolo Chorus 12x

Chain: KMC X12 Silver/Black

Saddle: Selle Italia model X

Handlebar: Aero Bar

Stem: 0 Deg

Seatpost: Diamante SV Carbon

Wheelset: Campagnolo Shamal Carbon

Tyres: Schwalbe One Performance TLE 700x28c

Bottom Bracket: BB86 86.5 x 41

Headset: Fully Integrated

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

Chicken Cyclekit says, "A fine racing bike has one job and one job only: to aid its rider to go as fast as possible, under control and by consuming less energy. This is the design input behind the development of the Diamante SV. Extreme efficiency, reactivity and control render this frame capable of delivering incredible speed, hence the moniker SV, or Super Veloce (Speed).

Every tube in the Diamante SV's construction has been optimized in terms of its internal structure and external form, using the most sophisticated ultra-high modulus carbon fibres available, to render the bike incredibly reactive and efficient. It is however the external form of these very tubes that have been meticulously studied to provide an overall aerodynamic advantage that benefits the rider in a versatile manner.

The fork continues this obsession for aerodynamics and speed by providing wider spacing between the tyre and wheel allowing air to filter through with less hindrance. By widening this gap, Basso has made this frame future proof by making it compatible with tyres up to 32mm wide. The fork has been designed to be vertically compliant, yet horizontally rigid. This simply means that the while there is some shock absorption within the Carbon lay-up of the fork, it's completely rigid and reliable when you're out of the saddle and sprinting."

The SV balances high-speed performance with a comfortable ride and position.

Where does this model sit in the range? Tell us briefly about the cheaper options and the more expensive options

According to Chicken Cyclekit the model range starts with Shimano Ultegra Di2 for £7,199 and tops out with Dura-Ace Di2 for £8,949.

Frame and fork

Overall rating for frame and fork
 
8/10

Tell us about the build quality and finish of the frame and fork?

Great build quality throughout and finished with that 'special' paint job.

Tell us about the materials used in the frame and fork?

Both the frame and fork are made from carbon fibre.

Tell us about the geometry of the frame and fork?

The geometry is still very much in the race bike category, although it is a little less aggressive compared to the previous version.

How was the bike in terms of height and reach? How did it compare to other bikes of the same stated size?

The stack and reach figures are typical of a bike designed to be ridden hard and fast, while not being as aggressive as a full race machine.

Riding the bike

Was the bike comfortable to ride? Tell us how you felt about the ride quality.

For what is a stiff platform, the Diamante SV manages to keep road buzz to a minimum.

Did the bike feel stiff in the right places? Did any part of the bike feel too stiff or too flexible?

Stiffness is impressive through the parts of the frame designed to handle power input.

How did the bike transfer power? Did it feel efficient?

Overall, efficiency is good, although there are a lot of lighter bikes out there for this sort of money.

Was there any toe-clip overlap with the front wheel? If so was it a problem?

No.

How would you describe the steering? Was it lively neutral or unresponsive? The handling is quick without being twitchy.

Tell us some more about the handling. How did the bike feel overall? Did it do particular things well or badly?

The steering works well for all kinds of eventualities, from smooth open roads to technical descents.

Which components had the most effect (good or bad) on the bike's comfort? would you recommend any changes?

I got on well with the Prologo saddle, finding it very comfortable.

Which components had the most effect (good or bad) on the bike's stiffness? would you recommend any changes?

The Campagnolo Record carbon fibre chainset has loads of stiffness for out-of-the-saddle efforts.

Which components had the most effect (good or bad) on the bike's efficiency? would you recommend any changes?

The Record groupset offers a large spread of gears acposs the 12-speed cassette and double chainrings.

Rate the bike for efficiency of power transfer:
 
8/10
Rate the bike for acceleration:
 
8/10
Rate the bike for sprinting:
 
8/10
Rate the bike for high speed stability:
 
8/10
Rate the bike for cruising speed stability:
 
8/10
Rate the bike for low speed stability:
 
7/10
Rate the bike for flat cornering:
 
7/10
Rate the bike for cornering on descents:
 
8/10
Rate the bike for climbing:
 
8/10

The drivetrain

Rate the drivetrain for performance:
 
9/10
Rate the drivetrain for durability:
 
8/10
Rate the drivetrain for weight:
 
8/10

Tell us some more about the drivetrain. Anything you particularly did or didn't like? Any components which didn't work well together?

Campagnolo's Record groupset is great to use thanks to comfortable ergonomics and smooth shifting.

Wheels and tyres

Rate the wheels for performance:
 
8/10
Rate the wheels for durability:
 
8/10
Rate the wheels for weight:
 
7/10
Rate the wheels for comfort:
 
8/10

Tell us some more about the wheels.Did they work well in the conditions you encountered? Would you change the wheels? If so what for?

A solid set of wheels from Campagnolo. They offer a nice balance between speed and weight so work on all kinds of topography.

Rate the tyres for performance:
 
9/10
Rate the tyres for durability:
 
7/10
Rate the tyres for weight:
 
8/10
Rate the tyres for comfort:
 
8/10

Tell us some more about the tyres. Did they work well in the conditions you encountered? Would you change the tyres? If so what for?

The Schwalbe tyres are some of the best on the market for grip and performance, really suiting the characteristics of the Diamante.

Controls

Rate the controls for performance:
 
8/10
Rate the controls for durability:
 
8/10
Rate the controls for weight:
 
7/10
Rate the controls for comfort:
 
8/10

Tell us some more about the controls. Any particularly good or bad components? How would the controls work for larger or smaller riders?

The aero handlebar is comfortable to use, and I was a fan of the saddle shape.

Your summary

Did you enjoy riding the bike? Yes

Would you consider buying the bike? Yes

Would you recommend the bike to a friend? Yes

How does the price compare to that of similar bikes in the market, including ones recently tested on road.cc?

Looking at the spec sheet alone, you can see that bikes with a similar build and a lighter weight can be had for quite a chunk less, like the Canyon and Merida mentioned at the top of the review. You need to take into account the fact that the Basso is handbuilt too, though.

Rate the bike overall for performance:
 
8/10
Rate the bike overall for value:
 
6/10

Use this box to explain your overall score

For the high, handbuilt quality of the Basso I think the price is justified. It's backed up by the ride quality and the way that the Diamante behaves. It's quite a bit heavier than some 'superbikes', but overall I think it's very good.

Overall rating: 8/10

About the tester

Age: 44  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 road.cc, off-road.cc 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!

Add new comment

13 comments

Avatar
floboe | 1 year ago
0 likes

The reviewed bike is MY2022 and already old news, the new model has, for example, a lighter bar-stem combo. I don't understand why the new model is not even mentioned. 

Avatar
KDee | 1 year ago
1 like

There's some very slick hose routing to the brake calipers. Can't see a trace of hose from the non-drive side. I wonder if that's a Basso design choice to optimise for Campagnolo calipers?

Avatar
Miller | 1 year ago
3 likes

There's a reason that Basso isn't offering a rim brake version - people aren't buying new rim brake bikes. I was in a nice cycle shop a month ago perusing their sales floor. There were several really nice rim brake bikes at heavily marked-down prices, they must have been 5 years old at a guess. Even at half or less of original price, those bikes are sitting there, gathering dust, being ignored.

Avatar
Joe Totale replied to Miller | 1 year ago
0 likes

It's more fun to believe there's some great conspiracy from bike manufacturers to force everyone onto disc brakes.

Bike manufacturers are just following what the market wants. See also the shift from mechanical to electronic shifting and also fully internal cabling.

It doesn't matter if the market is right or wrong, it's not the bike manufacturers job to tell them, just provide them with what they want.

Avatar
wtjs replied to Miller | 1 year ago
1 like

There were several really nice rim brake bikes at heavily marked-down prices

New added value for the site! It could be a marketplace bringing together all these people decrying disc brakes and bemoaning the absence of rim brake models and those with such bikes to dispose of!!

Avatar
Miller replied to wtjs | 1 year ago
1 like

Elmy Cycles in Ipswich if anyone is curious.

Avatar
IanEdward | 1 year ago
0 likes

At least they're still doing a rim brake Venta (for now 🙄) even if you do need to get it ordered in specially. 1 month until mine arrives...

Avatar
Welsh boy | 1 year ago
3 likes

How silly, marking down a disc braked bike because it doesn't have a rim braked version in the range. It would be one thing to mark a range or manufacturer down for not offering a particular model but to mark a bike down because the manufacturer doesn't offer something is really stupid 

Avatar
Joe Totale replied to Welsh boy | 1 year ago
1 like

I hope Road.cc will be consistent in this approach and mark down every single model of road bike if there isn't a rim brake version available.

Avatar
mark1a replied to Joe Totale | 1 year ago
1 like

Errm - when the Specialized Tarmac went disc only on the SL7, it didn't get a mention...

https://road.cc/content/review/specialized-s-works-tarmac-sl7-dura-ace-d...

Avatar
Joe Totale replied to mark1a | 1 year ago
0 likes

Indeed but maybe Road.cc might do this moving forward *insert winking emoji*

Avatar
IanEdward replied to Joe Totale | 1 year ago
0 likes

In fairness to the reviewer I do agree that in the context of Basso Bikes it probably IS noteworthy that they've discontinued the rim brake model, they did seem like one of the few holdout manufacturers still producing a number of rim brake models.

Obviously agree it shouldn't be marked down but who's to say it was?

Avatar
Rendel Harris replied to Welsh boy | 1 year ago
1 like

To be fair it hasn't been marked down for that, it's just mentioned in the lead-in as something that the reviewer sees as a negative. The actual mark is the average of all the criteria measured and that isn't one of them.

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