1937–1948 Flathead U-Series — Harley-Davidson Engine Print

1937–1948 Flathead U-Series — Harley-Davidson Engine Print

This handmade drawing depicts Harley-Davidson’s Flathead U-Series, produced from 1937 to 1948 — the final generation of Big Twin side-valve engines. Available in 74 cu in (≈1213 cc) and 80 cu in (≈1340 cc) versions, the U-Series refined the proven Flathead design with stronger cases, improved oiling, and better cooling, while retaining the quiet power and bulletproof simplicity that made it a favorite among riders and mechanics alike.

Built alongside the emerging overhead-valve Knucklehead, the U-Series remained the workhorse of the lineup — reliable, forgiving, and easy to service.
From police bikes to long-distance tourers, these engines earned a reputation for smooth torque and endless endurance.
The 1948 model year marked the end of Harley-Davidson’s Big Twin Flathead production, closing an era of nearly twenty years of dependable, side-valve performance.

Each print is part of a collector’s series celebrating Harley-Davidson engines across more than a century of history. Perfect for enthusiasts, workshops, or anyone who values vintage engineering and design.

Print Details

• Premium Japanese paper Luster RC 240 g/m²

• Available in two versions: Bright and Dark

• Sizes:

  • A4 — 21 × 29.7 cm (8.27″ × 11.69″)

  • A3 — 29.7 × 42 cm (11.69″ × 16.54″)

  • A2 — 42 × 59.4 cm (16.54″ × 23.39″)

• The color of the printed graphics may slightly differ from that shown in the photos.

• Shipped carefully rolled, ready for framing.

• No frame included.

About the Artwork

Each piece is drawn and produced independently by Billy Cune Art.
All rights to the Harley-Davidson® name and logos belong to their respective owners.
This work is an independent artistic interpretation, unaffiliated with Harley-Davidson Motor Company.

To find out more about copyright please visit this page.

Shipping

Free worldwide shipping on orders over €150.
Orders are carefully packaged and shipped internationally.
Customs or import fees may apply outside the European Union.

To find out more about shipping process please visit this page.

The last of the Big Twin Flatheads — steady power, classic style, and legendary endurance.