RETROL 4.2CC OHV V-Twin Cylinder Four-Stroke Gasoline Engine Model — R31 Shovelhead Version

Authentic Design Heritage
Based on the iconic 1960s V-twin motorcycle Shovelhead engine, capturing the spirit of a bygone era.
Precision Craftsmanship and Power Upgrade
Classic body lines, cooling fin structure, new carburetor design, and toggle throttle lever faithfully replicate real engine details. Upgraded larger intake and exhaust valves deliver a noticeable power boost — one of the most complex engines we’ve ever produced.
Premium Materials and Stable Operation
Meticulously machined from brass and stainless steel, mounted on a wooden base for stable display and operation.
Ready to Run, Beginner-Friendly
Includes starting and ignition equipment, making it accessible for novice enthusiasts. Its running performance will not disappoint.
A Collectible Gift Worth Displaying
A desirable collectible for personal enjoyment or as a distinctive high-end gift for friends and family on special occasions.

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