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DIAMONDHEAD-KO — Matte Anthracite Black Ring

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Installed by Road Runner Wheels & Tires — family-owned in Marietta since 2010. Questions? Call (678) 400-6467.

About This Wheel

Holding the DIAMONDHEAD-KO, the face profile is immediately aggressive — deep-cut spokes with a geometry that reads almost tactical rather than decorative. The matte anthracite body absorbs light evenly across the face, while the contrasting gloss black outer ring creates a hard edge that frames the spoke tips cleanly. That two-tone interplay does real work on darker factory colors like Onyx Black or Shadow Gray Metallic, where the ring separation stays visible without fighting the body. On lighter silvers and whites, the anthracite face goes noticeably darker by contrast, which suits the heavy-duty proportions of a Silverado 2500 HD or Sierra 2500 HD well. The zero offset keeps the face sitting flush with the fender line on most HD applications, which matters more on a working truck than people give it credit for.

Specifications

Diameter x Width	20" x 9"
Bolt Pattern	5x127, 6x135, 6x139.7, 8x165.1, 8x170, 8x180
Offset	ET+0mm
Hub Bore	Varies by size (pick a size above)
Construction	Forged
Material	Aluminum alloy
Finish	Matte Anthracite Black Ring
Manufacturer Part Number	Varies by size (pick a size above)

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How it works

1 Call 678-400-6467 to confirm fitment & availability
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678-400-6467 · Marietta, GA · Hablamos Español

Fitment

ET+0mm offset is typical for stock-height fitments; leveled and lifted trucks may want different offset/backspacing combinations to clear larger tires. A hub-centric ring is recommended when the wheel hub bore is larger than the vehicle hub.

About the Matte Anthracite Black Ring Finish

KG1 Forged focuses exclusively on forged monoblock construction — no flow-formed lines, no cast products under the same badge. That singular focus means their forging process and quality control stay consistent across the catalog. The DIAMONDHEAD-KO carries that same build standard: a one-piece forged structure designed to handle the load ratings that HD truck applications actually demand.

About KG1 Forged

KG1 Forged produces wheels distributed nationally through trusted vendor channels. Catalogs are stocked, MAP-pricing is enforced, and warranty coverage is honored at the manufacturer level.

Installing at Road Runner Wheels & Tires

Mount and balance available in our shop. TPMS programming available on-site. Free fitment guidance. Same shop handles lift kits, suspension work, and full builds.

Questions We Get

Will this fit my truck?

Confirmed fitments include Chevrolet Silverado 2500 HD and 3500 HD models spanning 2011 through 2027, as well as GMC Sierra 2500 HD and 3500 HD models across the same general range — including AT4, Denali, SLT, SLE, LTZ, LT, High Country, Custom, and WT trims. Always verify your specific model year and trim against the fitment guide before ordering.

Do lug nuts come included?

Lug nuts are not included with the wheel. We can point you toward compatible hardware when you're ready to order.

Looking for wheels, rims & tires near you in the Atlanta metro? We mount + balance same day at our Marietta tire shop — 1585 Roswell Rd. Serving Marietta, Atlanta, Cobb County, Kennesaw, Smyrna, Sandy Springs, Roswell, Alpharetta, Buckhead + Vinings.

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