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1936–1947 Knucklehead Engine
1/6 scale Knucklehead engine model
¥22,600
In stock｜Ships in 2–3 days
🚚 Shipping / 配送について
- Japan: Free shipping
- USA / Europe / Australia & other countries: ¥2,000 (tracked, estimate)
- Worldwide free on 2+ engine models (applied automatically)
- In-stock items ship in 2–3 days; made-to-order in 1–2 weeks
1936–1947 Knucklehead Engine
1/6 Scale
Harley's first overhead-valve V-twin — the engine that started the chopper story.
The Knucklehead was Harley-Davidson's first overhead-valve V-twin, built from 1936 to 1947 and named for the rocker boxes that look just like a pair of knuckles. Advanced for its day and gorgeous in every detail, it's the cornerstone of vintage American motorcycling. This 1/6-scale piece is built and aged by a single craftsman in Osaka, Japan.
🛠 About this piece
Hand-finished by one craftsman
Sanded, primed and painted entirely by hand, one piece at a time.
5–8 layers of paint
Built up from primer to final coat to capture a real metal finish.
Ready to display, no assembly
Cast in a durable custom resin. Includes a display stand — ready to display on arrival.
▶ Watch the build come together in the video at the bottom of this page.
✨ Recommended for
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Collectors who know the difference between a Knucklehead and a Panhead
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Anyone who loves vintage American V-twins and their history
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A statement piece for a garage, studio, or office shelf
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A serious gift for the rider or builder in your life
📐 Product Specifications
| Scale | 1/6 |
| Size | Approx. 12cm (H) x 15cm (L) |
| Displacement (actual engine) | 61ci (999cc) / 74ci (1,212cc) |
| Material | Custom-blended photo-curing resin (UV-curable) |
| Finish | Multi-layer paint + hand-painted aging |
| Made in | Osaka, Japan |
| Includes | Display stand |
The one that started it all — finished to look like it's lived a life.
Made with care
One-Of-A-Kind
Premium materials
Good Reviews