Retrol R31-Shovelhead 4.2CC OHV V-Twin Cylinder Four-Stroke Motorcycle Engine

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.