Basso's flagship road bike is often still called the "Diamante SV", but that name now belongs to the previous generation. The current bike is simply the SV, short for "Sempre Veloce" ("always fast"). Basso describes it as a new bike and uses the Diamante SV as its benchmark. A separate round-tube climbing bike called the Diamante is still sold alongside it.

This review is built from Basso's SV product page, its SV Tech page and its online configurator, checked on 8 October 2026. We have not ridden the SV, so we describe what the specifications suggest rather than inventing ride impressions.

Key Takeaways

• The current flagship is the Basso SV. The Diamante SV is its predecessor.
• Every SV is configured to order: Shimano Ultegra Di2 or Dura-Ace Di2, SRAM Force AXS or RED AXS, or Campagnolo Record 13.
• US prices run from $10,495 (Ultegra Di2 with Fulcrum Wind 57 wheels) to $15,495 (SRAM RED AXS with DT Swiss ARC 1100). The frame kit is $6,795.
• Basso quotes a 780 g frame (size 53), a 370 g fork and a 6.7 kg complete bike (size 56, Dura-Ace Di2, DT Swiss ARC 1100).
• Tyre clearance is 35 mm on rims with a 25 mm internal width, and the front end is shaped for 28–35 mm tyres.
• The warranty is 5 years when you register the bike.

What the SV Is, and Why the Name Matters

Basso's tech page frames the SV as an all-round race bike: aero, stiff at the bottom bracket and head tube, and roomy enough for wide tyres. Against the Diamante SV, Basso claims a 16% smaller frontal area (24,993 mm² versus 29,754 mm²). That is the only quantified aero claim Basso publishes; it gives no drag figure in watts.

The name matters when you shop. Listings for a "Diamante SV" may be the older generation at a discount, or the current SV described with the old name. Check the frame: the current SV has truncated-airfoil tubes throughout, a front wheel tucked closely into the down tube, and Basso's 3B Gen II hidden seat clamp.

Basso's SV assets date from December 2024 and January 2025, which points to a launch in early 2025. Since then Basso has added colours (Élan White, Supernova and Zenith White), but we found no change to the frame for 2026.

Builds and Prices

Basso builds each SV to individual specification through its configurator. These are the groupset options:

Crank lengths of 170, 172.5 or 175 mm are offered where the groupset allows. Shimano and SRAM builds can be upgraded to DT Swiss ARC 1100 Dicut DB wheels. There is no Shimano 105 build, no power meter option listed, and no tyre specification shown.

List prices (configurator, 8 October 2026)

Basso describes the frame kit as "the frame, fork and all the specific Basso components". Colours are Zenith White, Supernova, Élan White, Viola Galaxy, Pure Black and Rosso Vivo; Rosso Vivo carries a surcharge and comes only with the silver Fuga cockpit.

Weights

Basso does not say whether the frame weight is painted or which hardware it includes, and it publishes only one complete-bike weight. Expect Ultegra and Force builds with the Fulcrum wheels to weigh more than the 6.7 kg flagship figure, but Basso gives no number for them.

Frame Technology: Aero, Stiffness and Tyre Clearance

Carbon. Basso uses Toray T1100 and T1000 fibres and says the SV draws on 30 years of carbon experience.

Stiffness. Basso says bottom-bracket and head-tube stiffness are significantly higher than on its other high-end models. The bottom-bracket shell is 86.5 mm wide, giving a broad base for the down tube and chainstays, and the head tube is 67.9 mm deep. Rear-triangle stiffness at the axle was deliberately left unchanged, which Basso presents as a comfort decision.

Aero. All tube sections use a truncated-airfoil shape, and the down tube wraps closely around the front wheel. The front end is optimised for 28–35 mm tyres, so you do not have to choose between aero shaping and wide rubber.

Clearance. Basso quotes 35 mm tyre clearance on rims with a 25 mm internal width. That opens the SV to rough tarmac and light cobbles, which Basso itself highlights.

Comfort details. The 3B Clamp System Gen II hides the seat clamp and uses a rubber gusset with a vulcanised steel plate to damp vibration. A long 380 mm Piuma seatpost adds flex. Microtech solid-oil headset bearings are claimed to last three times longer than standard bearings.

Fit: Cockpits, Seatposts and Sizes

Basso developed the SV's fit with the 4Performance bike-fit studio, using AI-assisted analysis, and had Mattia De Marchi test prototypes. The result is unusually broad fit coverage for an integrated aero bike:

• Seven frame sizes, from 45 to 61.
• Two one-piece cockpits. The Fuga is aimed at an aero position and narrow-shouldered riders, with 1° back-sweep and down-sweep and a short 65 mm reach; it comes in 80–130 mm stems at 370 mm width. The Levita has a more traditional bend and comes in 90–120 mm stems at 400, 420 or 440 mm width.
• Two seatpost setbacks: Piuma with 15 mm or 0 mm setback.

Basso quotes 16 integrated handlebar options across the two designs. That matters because a one-piece cockpit cannot be tuned with a different stem later; with this many options you are more likely to find the right combination from the start.

Geometry

Measurements are in millimetres. Basso does not publish bottom-bracket drop, trail or fork rake.

The numbers back up Basso's description of high stack and sloping geometry. Reach grows by only 20 mm from size 45 to 61 while stack rises 114 mm, so larger sizes get noticeably more upright. Compared with many pure race bikes, the SV sits a little taller at the front for a given reach, which suits riders who want an aero bike without an extreme position.

Which SV Should You Buy?

• Ultegra Di2 + Fulcrum Wind 57 ($10,495). The entry point and the best value. You get the same frame, fork and cockpit options as the top builds.
• Force AXS + Fulcrum Wind 57 ($10,895). Choose this if you prefer SRAM's wider 10-36 range or already run AXS on other bikes.
• Campagnolo Record 13 ($12,495). For Campagnolo loyalists, and the only build with Zonda Carbon wheels.
• Dura-Ace Di2 or RED AXS + DT Swiss ARC 1100 ($14,995–$15,495). The lightest and most expensive; the Dura-Ace version is the bike behind Basso's 6.7 kg figure.
• Frame kit ($6,795). Worth it if you already own a compatible electronic groupset and wheels.

The wheel upgrade costs $1,100–$1,500 depending on the build. If budget is tight, start with the Fulcrum wheels and upgrade later.

Before you order

Because every SV is configured to order, a few decisions are hard to undo later:

1. Cockpit size. Choose stem length and bar width from a bike fit or your current position. Changing a one-piece cockpit means buying a new one.
2. Cockpit style. The Fuga is narrow (370 mm) and aero-focused; the Levita gives you 400–440 mm widths and a more familiar bend.
3. Seatpost setback. Pick 0 mm or 15 mm based on where your saddle needs to sit relative to the bottom bracket.
4. Crank length and gearing. Shimano builds offer 50/34 or 52/36 rings; SRAM builds use 48/35. Choose the crank length you already ride unless a fitter advises otherwise.
5. Tyres. Basso does not list a stock tyre. If you want to use the full 35 mm clearance, confirm the rim's internal width and the tyre maker's pressure limits.

Ask your dealer for the delivery date in writing, as Basso does not publish lead times.

Frequently Asked Questions

Is the Basso SV the same as the Diamante SV?

No. The SV is the current generation. Basso compares it with the Diamante SV, its predecessor, and claims a 16% smaller frontal area.

What does SV stand for?

"Sempre Veloce", Italian for "always fast". Basso notes it comes from the Latin "semper velocem".

How much does the Basso SV cost?

In the US, complete bikes run from $10,495 to $15,495, and the frame kit is $6,795. In Italy the range is €7,799–€11,999, with the frame kit at €4,999.

How much does the Basso SV weigh?

Basso quotes 780 g for a size 53 frame, 370 g for the fork and 6.7 kg for a size 56 complete bike with Dura-Ace Di2 and DT Swiss ARC 1100 wheels.

What is the maximum tyre size?

35 mm on rims with a 25 mm internal width.

Is there a Shimano 105 or mechanical version?

No. The configurator offers only electronic Shimano and SRAM groupsets plus Campagnolo Record 13.

What warranty does Basso offer?

5 years, available when you register the bike.

Verdict

The Basso SV is a modern all-round race bike: aero tube shapes, a stiff front end and bottom bracket, and genuine 35 mm tyre clearance. Its strongest differentiator is fit. Seven sizes, 16 integrated cockpit options and two seatpost setbacks give it more fit range than most one-piece-cockpit aero bikes.

It is not cheap, and Basso publishes less weight data than some rivals. But the entry Ultegra Di2 build gets the same frame as the flagship, which makes it the version to look at first. Just make sure any listing you see is the current SV, not the older Diamante SV under its old name.

Sources

• Basso SV product page
• Basso SV Tech page
• Basso SV configurator
• Basso Diamante (separate climbing bike)

Equipment mentioned in this guide

• Fulcrum Wind 57 disc wheelset
• Pirelli P Zero Race TLR 32mm tyres
• Out-front computer mount for integrated handlebars

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