Monoblock forged wheels (1P)

The monoblock construction

The whole wheel is cut from a single block of forged 6061-T6 aluminium, then 5-axis CNC machined. No separate barrel, no assembly bolts: the wheel is one piece. Of the three constructions, it weighs least and does the most to reduce unsprung mass. The concave profile is machined straight into the face, from a flat profile to a deep concave.

For drivers who put performance and handling first: less mass at the end of each suspension arm means a wheel that follows the road better and a car that changes direction more readily.

These words (concave profile, offset (ET), PCD (bolt pattern), fitment) are explained one by one, without jargon, in the Onyx Academy (page in French), our free course.

Monoblock prices, 18-inch to 24-inch

A set of four 22-inch monoblock forged wheels costs €3,750, and a set of 24-inch ones €4,100.

For Great Britain, our checkout charges in pounds sterling. It converts the euro price at its exchange rate on the day, currency conversion charge included, so the amount in pounds is about 2% more than a straight conversion at the market rate; the amount shown at checkout is the one charged for your order. The amounts in pounds on this page are those of 4 October 2026. Delivery is included in the price, so UK import VAT (20%) applies to the whole amount in pounds. The carrier collects the VAT before delivery, together with its clearance fee (for example, DHL Express charges £11 or 2.5% of the duty and VAT it pays, whichever is higher) and any import duty. Any import duty depends on the UK tariff in force when your wheels arrive: the amount you pay is the one on the carrier's notice, and UK import VAT then applies to it too. The details are on our Delivery to Great Britain page.

The models in the catalogue (13)

Each model below is a starting point: its product page (in French) shows every diameter and finish.

• OX-DC5 Veloce: set of four from €3,200
• OX-DS1 Vortex: set of four from €3,200
• OX-M15 Sovereign: set of four from €3,200
• OX-G6 Vector: set of four from €3,200
• OX-T5 Superlight: set of four from €3,200
• OX-Y7 Venom: set of four from €3,200
• OX-C9 Razor: set of four from €3,200
• OX-GT15 Turbine: set of four from €3,200
• OX-AR9 Turbofan: set of four from €3,200
• OX-DC7 Mistral: set of four from €3,200
• OX-M1 Obsidian: set of four from €3,200
• OX-TL10 Trellis: set of four from €3,200
• OX-Y5 Fronde: set of four from €3,200

And the other two constructions?

All three constructions start from the same metal and the same process: a block of forged 6061-T6 aluminium, then 5-axis CNC machined, never cast in a mould. What sets them apart is the number of parts in the finished wheel.

Two-piece

A forged centre is assembled to a barrel made to measure. Width and offset no longer depend on the design of the face: you choose them. The lip can be deep, the bolts remain visible, and two-tone finishes become possible, since the centre and the barrel can be finished differently.

For drivers after exact fitment (the position of the wheel in the arch, to the millimetre) and a visual presence that a monoblock cannot match.

See the two-piece range

Three-piece

The forged centre sits between an outer barrel and an inner barrel, and the three parts are assembled by hand. It is the construction that goes furthest: extreme widths, an offset (ET) set to the millimetre, a stepped lip, technical bolts.

For exceptional projects, when the width or the offset you want cannot be reached with any other construction. It is made on quotation.

See the three-piece construction

Which one to choose?

Monoblock if lightness and handling come first. Two-piece if exact fitment and a deep lip matter most. Monoblock and two-piece are the constructions customers ask for most; three-piece is kept for projects that need it, when the width or the offset you want cannot be reached any other way, and it is made on quotation. If in doubt, the Onyx Forged design office decides from your car's measurements: write to contact@onyxforgedwheels.com, or see how to customise your wheels.

Manufacturing is bespoke: the dimensions are set for one specific car, and your wheels are delivered in 4 to 8 working weeks, shipping included, from full payment for an order on the website, or from the deposit for an order on quotation, and at the earliest from your approval of the measurements, the colour or the 3D render you asked for, under article 5.1 of the Terms and Conditions. On a quotation calculated online, you can pay in 3 interest-free instalments. Prices on the website are for a set of four wheels, never for a single wheel. Free delivery to mainland France, the European Union, Switzerland, the United Kingdom, Norway and Iceland, and to the French overseas departments and territories on quotation, which sets the delivery time (Terms and Conditions, article 5.2).

Why forged, not cast

A cast wheel is made by pouring liquid aluminium into a mould. As it cools, the metal leaves tiny pores, invisible to the eye.

A forged wheel never goes through a liquid state: a solid block of aluminium is compressed under a force of several thousand tonnes. Its internal grain lines up. The resulting material has no porosity and behaves differently under impact: where a cast wheel tends to crack all at once, a forged wheel deforms before it breaks.

That is the material that is then 5-axis CNC machined: forged 6061-T6 aluminium, an alloy also used in aircraft construction. The full explanation takes two lessons of the Onyx Academy: cast or forged (page in French) and why a forged wheel almost never breaks (page in French).

Frequently asked questions

What customers ask before ordering a monoblock

Is a monoblock really lighter than a two-piece or a three-piece?

At the same diameter, width and spoke design, yes: it carries no assembly flange and no bolts. We do not publish a figure for the difference between the three constructions, because it depends on the diameter, the width and the spoke design: a single percentage would be wrong. The difference between forged and cast, on the other hand, is documented: for a comparable design, a forged wheel is 15 to 25% lighter than a cast wheel.

Can a monoblock wheel have a deep lip?

To a degree. The lip depth of a monoblock is limited by the material available in the forged blank, whereas a two-piece or a three-piece chooses its barrel independently of the centre. If a deep lip is your main criterion, the two-piece construction suits it better.

Do I need spacers or spigot rings with a monoblock set?

No. Each wheel is designed to your car's exact specifications (PCD, offset, centre bore, maximum load), so no spacers or spigot rings are needed.

Which diameters are available, and what does a monoblock set cost?

The catalogue monoblocks come in 18″ to 24″. A set of four wheels costs from €3,200 in 18″ and 19″, up to €4,100 in 24″. The price shown is always for a set of four wheels, never for a single wheel. For Great Britain, our checkout charges in pounds: on 4 October 2026, a set came to £2,780 in 18″ and 19″ and £3,561 in 24″, or £3,336 and £4,273.20 with UK import VAT (20%), before the carrier's clearance fee and any import duty. The carrier sets its fee: for example, DHL Express charges £11 or 2.5% of the duty and VAT it pays, whichever is higher. Any import duty depends on the UK tariff in force when your wheels arrive: the amount you pay is the one on the carrier's notice, and UK import VAT then applies to it too. Every diameter is set out on our Delivery to Great Britain page. Prices in detail, and what they include (page in French).

Are your monoblock wheels designed to JWL/VIA standards?

Yes: they are designed to JWL/VIA standards, which set requirements for resistance to fatigue, impacts and dynamic loads. As parts made one at a time to your specifications, they do not go through an individual approval procedure: we would rather say so before you order.