Signal Forged D15 Duoblock Series Forged Wheels

Signal Forged D15 — Duoblock Series 2-Piece Forged Wheel

The Signal Forged D15 is a 2-piece forged wheel from the Duoblock Series — combining a forged T6-6061 aluminum center CNC-machined on a HAAS mill with a precision outer barrel. The two-piece construction allows greater flexibility in width and concave depth than a monoblock, while the forged center maintains the structural advantage of a single-piece forging. Hardware is available in visible, 50/50, or hidden configurations with optional titanium upgrade. Every D15 is built to order in the USA with custom diameter, width, bolt pattern, offset, and finish.

Signal Forged — Successor to Modulare Forged

Signal Forged is the direct evolution of Modulare Forged, founded in 2004 in Dallas, Texas. The original Modulare name — Italian for "Modular" — reflected the company's early focus on multi-piece wheels. When the monoblock program launched in 2010, the name no longer captured the full scope of what the brand had become. After celebrating their 20th anniversary in 2024, the team undertook a complete rebrand: new name, new visual identity, same ownership, same craftsmen, same HAAS CNC mills, same aerospace-grade T6-6061 forged aluminum. The name Signal Forged was officially announced on February 18, 2026. The Modulare name lives on in the Heritage Collection — legacy models from the original catalog that remain available.

Available Sizes

• Diameters: 18" | 19" | 20" | 21" | 22" | 23" | 24"
• Width: Custom — specified at order
• Offset (ET): Custom — specified at order
• Bolt Pattern (PCD): Any — custom per vehicle

Need a Different Size?

Contact Hodoor at [email protected] or WhatsApp +44 7488 818747 for sizing outside the listed range. Signal Forged engineers confirm feasibility for any diameter, width, or offset.

Technical Specifications

• Construction: 2-Piece Forged Duoblock
• Center material: T6-6061 aerospace-grade forged aluminum
• Machining: CNC-machined on HAAS mill, USA
• Profile: Concave
• Hardware: Visible / 50/50 / Hidden — optional titanium upgrade
• Width: Custom — specified at order
• Offset (ET): Custom — specified at order
• Bolt Pattern (PCD): Any — custom per vehicle
• Finish: Any — brushed, polished, painted, powder-coated, or two-tone
• Lead time: 6–10 weeks build to order

Vehicle Fitment Guide

• BMW M3 / M4 / M5 / M8 — performance coupe and sedan
• Mercedes-AMG GT / C63 / E63 / G63 — AMG performance range
• Porsche 911 (991/992) / Cayenne / Panamera — sports and GT
• Audi RS4 / RS6 / RS7 / R8 — performance touring and supercar
• Ferrari 488 / Roma / Purosangue — supercar fitment
• Any performance or luxury application — PCD and offset confirmed at order

Other Bolt Patterns Available

The D15 is available in any bolt pattern: 5×112, 5×120, 5×130, 5×114.3, 5×108, 5×100, 4×108, or any custom PCD. Brake clearance is confirmed by Signal Forged engineering before production begins.

Signal Forged Duoblock Series — Model Overview

Explore the Signal Forged Lineup

• Signal Forged CS1 — Competition Series 3-Piece Forged
• Signal Forged MS05 — Motorsport Series 1-Piece Forged
• Signal Forged CL1 — Center Lock Series 1-Piece Forged
• Signal Forged B1 — Monoblock Series 1-Piece Forged
• Signal Forged D9 — Duoblock Series 2-Piece Forged
• Signal Forged S9 — Deep Concave Step Lip 3-Piece Forged
• View all Signal Forged wheels at Hodoor

Can't Find the Right Wheel? Order Custom Forged

If the Signal Forged D15 is not quite right for your build — different spoke count, deeper concave, different rim profile — Hodoor offers a custom forged wheel manufacturing service. Send us any reference image or sketch, and we manufacture the wheel in any size, any colour, and any bolt pattern — fully forged from 6061-T6 aluminum to the same standards as catalogue brands. Production takes 3–6 weeks with worldwide delivery, and pricing is often competitive with premium European catalogue fitments. Contact us at [email protected] or via WhatsApp +44 7488 818747 for a quote.

How to Order

1. Send your car details — make, model, year, brake package, and preferred finish to [email protected] or WhatsApp +44 7488 818747.
2. Fitment quote within 24 hours — we confirm diameter, width, offset, PCD, and finish; a Signal Forged engineer signs off on the build sheet.
3. Invoice and 50% deposit — production starts once the deposit clears (bank transfer or card).
4. Build lead time 6–10 weeks — each wheel is machined and finished to order in the USA; photos are sent before crating.
5. Worldwide delivery, fully insured — wheels ship door-to-door with tracked courier.

Frequently Asked Questions

What is the Signal Forged D15?
The D15 is a 2-piece forged wheel from Signal Forged's Duoblock Series. It combines a forged T6-6061 aluminum center with a precision-machined outer barrel, joined with hardware in your choice of visible, 50/50, or fully hidden configuration. Every D15 is built to order in the USA.

How is the Duoblock wheel constructed?
The Duoblock is a 2-piece forged wheel — a forged center joined to a machined barrel with hardware. This configuration allows greater width and offset flexibility than a 1-piece monoblock while keeping weight lower than a traditional 3-piece wheel.

What diameters are available?
The D15 is available in 19" | 20" | 21" | 22" through Signal Forged's build-to-order program.

What hardware options are available?
Duoblock hardware is available in three configurations: fully visible, 50/50 (partially visible), or fully hidden. Optional titanium hardware upgrade is available for reduced weight and a premium aesthetic.

Discover Hodoor World: Your Ultimate Car Customization Destination

• Worldwide Shipping: No location is too remote — we deliver Signal Forged wheels globally with full insurance and tracking.
• Expert Fitment Support: Our specialists confirm bolt pattern, offset, and brake clearance before every order. Contact: [email protected] | WhatsApp: +44 7488 818747
• Trusted by Enthusiasts: Verified customer reviews on Trustpilot.
• Custom Build Service: From forged wheels to full body kits — we design, source, and deliver bespoke automotive upgrades worldwide.

Wheel Care

• Clean with a pH-neutral wheel cleaner and a soft microfiber brush. Avoid alkaline and acid-based cleaners — they can etch the brushed and polished finishes used on Signal Forged wheels.
• Rinse with cool water before applying any product, and never spray product onto hot rotors or hot wheel surfaces.
• Apply a dedicated wheel sealant or ceramic coating every 3–4 months to protect against brake-dust etching and UV.
• Torque lug bolts to manufacturer specification and re-check after the first 50–100 km of driving.
• Inspect for curb damage regularly — forged wheels are impact-resistant, but any kerb strike should be checked by a wheel specialist.

Signal Forged D15 — International Delivery

The Signal Forged D15 ships regularly to all major performance-car and luxury markets. In Western Europe the strongest demand comes from the Netherlands, Switzerland, and the United Kingdom. In the Gulf, the UAE and Saudi Arabia are consistent markets for hand-finished forged hardware. Mediterranean deliveries cover Cyprus, Turkey, and Greece. Every shipment leaves Hodoor with full export documentation and tracked, insured logistics — and direct factory liaison between you and Signal Forged's build team in the USA.