Royal Enfield unveiled the Shotgun 650 Son of a Gun at EICMA 2026 in Milan on November third, a limited-edition collaboration with Australian custom and lifestyle brand Deus Ex Machina. It’s the third special Shotgun 650 in Royal Enfield’s Custom World programme, following the Icon Motorsports edition in early 2025 and the Rough Crafts collaboration later that year.

The story starts with a one-off. Deus head builder Jeremy Tag and designed and built Son of a Gun at Deus Camperdown’s House of Simple Pleasures workshop in Australia. Marked one of one, it carries Deus lettering on the fuel cap along with a note that Tag and built it. The custom is radical — a shortened, slim rear with an exposed wheel, a solo brown leather seat, a flat handlebar with a small headlight cowl, large-diameter alloy wheels, and a long exposed exhaust. Unique touches include twenty-three-inch solid alloy wheels, an oil-cooling system integrated into the frame, and a suspended air filter Deus calls the floating lung. Dark-toned engine, frame, and wheels let the silhouette do the talking, while the deep burgundy tank wears flowing Royal Enfield and Deus graphics.

That one-off serves as the blueprint for the production version, called the Shotgun Drop Edition. Exactly one hundred units will be built worldwide in 2027. Unlike the custom, the series stays close to the standard bobber’s shape — larger rear fender, passenger-friendly seat, familiar bodywork — but adopts the custom’s visual identity. The paint is a deep red, cream, and gold three-tone scheme. The tank and side panels carry exclusive Royal Enfield and Deus collaboration scripts. Piano-black engine covers, contrast-cut alloy wheels, specially finished side panels, a brown leather seat with embroidered Deus branding, and matching brown handlebar grips complete the look.

Mechanically, nothing changes. It uses the familiar six-forty-eight cc air and oil-cooled parallel twin with a two-seventy-degree crank — the same engine as the Interceptor, Continental GT, and Super Meteor. Output is forty-six point three nine brake horsepower at seven thousand two hundred fifty rpm and fifty-two point three Newton metres of torque at five thousand six hundred fifty rpm. Fuelling is electronic injection, cooling is air and oil, and it meets Euro five.

The six-speed gearbox drives the rear wheel by chain through a wet multi-plate slipper clutch. Chassis is a steel tube frame with a forty-three millimetre Showa upside-down fork offering one hundred twenty millimetres of travel up front, and twin Showa shocks with five-step preload adjustment and ninety millimetres of travel at the rear. Wet weight is two hundred forty kilograms. Seat height is seven hundred ninety-five millimetres, wheelbase one thousand four hundred sixty-five.

Tyres are one hundred over ninety by eighteen at the front and one hundred fifty over seventy by seventeen at the rear. Fuel capacity is thirteen point eight litres, and the dash is analogue with a digital display plus Tripper turn-by-turn navigation.

Every bike is shipped with an exclusive Royal Enfield x Deus souvenir jacket made from stone-washed sateen fabric, featuring heritage-inspired typography and a custom inner lining that mirrors the bike’s paint scheme.

Royal Enfield’s managing director B. Govindarajan framed it as celebrating the creative possibilities of custom motorcycling, while Adrian Sellers, head of custom and motorsport, praised Deus for honouring the Shotgun’s core identity while making something absolutely distinctive.