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Concaver CVR4 21x10.5" (5 trous - sur mesure) ET10-46, Noir Platine

Réf : CONCAVER-307161

 Shipping times to Europe

Delivery times vary depending on the type of product:

🔩 Small items & spare parts
→ 5 to 7 days

🔧 Pneumatic kits (air ride)
→ 2 weeks minimum

⚙️ Airmext Kits (custom made)
→ 3 to 6 weeks (production + delivery)

Some products are in stock, others are made to order to ensure quality

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Changed your mind? No problem, you have 14 days to let us know.

📧 First step: Contact us at contact@raslbitume.com to notify us of your return.

To be accepted, your item must be:

  • ✅ Unused and in perfect condition
  • ✅ In its original packaging
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Concaver CVR4 21x10.5" (5 holes - custom) ET10-46, Platinum Black

à €724,99
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Concaver

CVR4 21×10.5" — Platinum Black

5 studs, 108 to 130 mm to choose from · ET 10 to 46 · Machined to order
Sold individually Custom-made TÜV-approved Hybrid forged Hardware included

The Concaver CVR4

A Y-shaped twin-spoke design, one of the most intricate in the Concaver catalog. The central concavity highlights large brake calipers.

Technical specifications

Diameter
21 inches
Width
10.5 inches
Center bore
74.1 mm
Color
Platinum Black
Bolt pattern
5 studs108 to 130 mm
Offset (ET)
ET 10 to 46
Max. load
800 kg / wheel
74.1 mm center bore: if your vehicle's hub is smaller, a centering ring fills the gap and ensures the wheel is centered. They are supplied according to the vehicle details you provide.
TÜV approval: this model is certified by the German organization, the most demanding reference on the European market. The report lists the covered vehicles and, where applicable, the fitting conditions. Ask us for the report corresponding to your vehicle if needed.

Wheel machined to order

Specify your vehicle when ordering

This Concaver is not machined in advance: its bolt pattern (5 studs, from 108 to 130 mm) and its offset (ET 10 to 46) are machined to your specifications. Enter your exact vehicle model in the form above — without this information, the wheel cannot be manufactured. Not sure? Contact us before ordering; we'll determine the correct specifications together.

Specific offset: the wheel is supplied in ET 10 by default. If you want another value within the range, indicate it in the form: machining to this specification costs €20 per wheel, automatically added to the cart.

You place your order

Choose the diameter, width, and color, then enter your vehicle details and, if needed, the desired offset (+€20 per wheel).

We confirm the specifications

We check the bolt pattern, offset, and clearance on your vehicle before starting production.

The wheel is machined

Allow approximately one additional week for machining or a custom paint finish.

Shipping

Delivered with the appropriate hardware, centering rings, and center cap.

What's included

  • Concaver CVR4 21×10.5" wheel (sold individually)
  • Hardware adapted to your vehicle — included
  • Centering rings adapted to your vehicle — free with any order of 4 wheels
  • Matching Concaver center cap — always included, regardless of quantity
  • TÜV approval
  • Bolt pattern and offset machined to your specifications
  • Maximum load rating: 800 kg per wheel

Construction: hybrid forged

Concaver uses Flow Forming, also known as rotary forging: the wheel is stretched while hot as it rotates, which densifies the material around the tire bead seat. The result falls between a conventional cast wheel and a fully forged wheel — significantly stiffer and lighter than the former, without the cost of the latter.

This process allows Concaver to offer deeply concave designs in large diameters at an affordable price.

Why Concaver

Machined to your specifications

Bolt pattern and offset made to measure: the wheel adapts to your vehicle, not the other way around.

TÜV-approved

The most demanding European certification, rare in this price segment.

Pre-purchase advice

Bolt pattern, offset, clearance, camber: we confirm the fitment with you before starting the machining.

Fitting and hardware

Unlike most brands, the appropriate hardware is included with your Concaver wheels, along with the centering rings and center cap. Simply specify your vehicle when ordering.

Need additional hardware or specific parts? See our lug nut packs and wheel bolt packs, or ask us for advice.

Have a question about this Concaver CVR4?

Custom bolt pattern · Offset · Clearance · Machining time · TÜV
Our team responds quickly.

Contact us Full Concaver range
Rasl'Bitume — Specialist in wheels, air ride & stance suspension
contact@raslbitume.com · raslbitume.com
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Concaver CVR4 21x10.5" (5 trous - sur mesure) ET10-46, Noir Platine

Concaver CVR4 21x10.5" (5 holes - custom) ET10-46, Platinum Black

à €724,99
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