Royal Enfield Concludes Season III of the Much Celebrated Busted Knuckles Build-off
Australia, May 21, 2026: Royal Enfield, the global leader in the mid-size motorcycle segment, today concluded season III of Busted Knuckles Build-off – one of the most celebrated custom competitions. Royal Enfield dealerships across Australia were asked to transform the Shotgun 650 into a custom motorcycle of their choosing. This resulted in a slew of most coveted custom motorcycles being built.
Busted Knuckles Build-Off is a prestigious custom motorcycle competition organised by Royal Enfield, exclusively for their dealership network. It highlights creative engineering and bespoke design on the best motorcycles from the RE stable to create unique, high-end custom builds. This year, the dealers were given the Shotgun 650 as the inspiration for custom creativity. Shotgun is a truly unique motorcycle born out of raw creative energy, mixed with anarchic custom culture and thoroughbred Royal Enfield DNA – A motorcycle inspired by custom, for custom
Australia is the first global market to host the third edition of the Busted Knuckles Build-Off. An open call for submissions from Royal Enfield’s dealers was narrowed down to a select 5 participants, with 6 months to create an outstanding custom build. Based on the Shotgun 650, a motorcycle inspired by the custom world and designed with customisation in mind, each dealer has created a truly unique expression of what a Shotgun 650 can be.
Royal Enfield Dirty Purdy by MotoMAX
Named Dirty Purdy, this build does not try to reinvent the Shotgun. Instead, it takes what was already there and turns it up. The Shotgun 650 arrives with a strong custom-inspired identity from the factory, so MotoMAX chose to lean into that and push it further — lower, longer, louder and more aggressive. The defining feature of Dirty Purdy is its exhaust system, and from the outset, that was non-negotiable. MotoMAX knew the bike had to wear a true twin “shotgun” exhaust setup, and that idea became the visual anchor for the whole build. The finished pipes exit high and wide on each side at a 45-degree angle, giving the motorcycle an unmistakable stance and a hard-edged silhouette that immediately sets the tone.
Dirty Purdy takes the Shotgun 650 and pushes it closer to the original concept’s radical vision. The build is defined by its high, wide twin “shotgun” exhausts exiting at 45 degrees, with no mufflers and a sound to match. MotoMAX also reworked the stance with a 40mm lower rear, revised shocks, heavier fork oil, and a low-slung rear guard and seat setup using a Goan 350 rear guard hanger, custom guard, and genuine Royal Enfield accessory seat. Finished in raw steel with MotoMAX’s signature piston bolt logo, Dirty Purdy is a stripped-back, aggressive and purposeful custom that stays true to Royal Enfield’s spirit while turning the Shotgun 650 all the way up.
Desert Eagle by Moto Machine
Royal Enfield Desert Eagle takes the Shotgun 650 into full custom territory as a nitrous-equipped desert bobber with a post-apocalyptic edge. Inspired by Group B rally cars and Dakar machines, the build features a steel-fabricated fuel tank, tank-mounted ram air intake, NOS system, custom side-exit twin exhausts, three-row LED headlight setup, custom aero discs, YSS rear suspension, and a long list of fabricated, CNC-machined and 3D-printed details. It is a bold one-off that stays connected to Royal Enfield through the frame-loop design, Shotgun silhouette, and references to the brand’s Custom World and military-inspired heritage.
RE1000 by GRID Motorcycles
Built by GRID Motorcycles, Royal Enfield Gold Coast for Busted Knuckles Build Off, the RE1000 is a ground-up custom based on the 2025 Royal Enfield Shotgun 650 and built around a world-first 1000cc Royal Enfield parallel twin. Developed with Jesse Robinson, the original 650 engine was transformed internally into a 1000cc powerhouse, while Dylan Brown hand-built almost everything around it, including a custom chrome moly frame, custom aluminium tank and fenders, handlebars, grips and triple clamps. Inspired by drag racing culture and Japanese craftsmanship, the RE1000 combines extreme fabrication with a sleek, timeless finish, making it one of the most ambitious and show-stopping Royal Enfield customs ever built for the competition.
Sawn-Off by House of Motorcycles
Built by House of Motorcycles for Busted Knuckles Build Off, the Royal Enfield Sawn-Off is a one-of-one Shotgun 650 inspired by classic bobber and drag-bike culture. Built in-house by Cam, it strips the platform back to a harder, lower and more purposeful form through a low-profile Urban Flyscreen, Black Signature Rider Seat, XL 10.5-inch rear shocks, 7/8-inch drag handlebars, Up and Over Riser Kit, custom curved number plate frame, integrated Ellypse run/turn/brake lighting, and bespoke turn signals. The result is a clean, aggressive and tightly resolved custom that stays true to Royal Enfield’s ethos of pure motorcycling, simplicity and rider expression.
Spitfire 650 by Fast Fuel Motorcycles
Built by Fast Fuel for Busted Knuckles Build Off, the Royal Enfield Spitfire 650 takes the Shotgun 650 and reworks it with inspiration drawn from the iconic Supermarine Spitfire. Designed to stay road registrable, reliable and genuinely usable, the build balances strong visual identity with real-world rideability. Standout features include afterburner-style flame throwers, ammunition case saddlebags, a custom LED tail strip, hand-brushed bomber teeth clutch cover, candy red powder-coated details, internally wired handlebars, and a sprung, custom upholstered seat. Rather than reinventing the Shotgun 650, Fast Fuel enhanced its modern design with added personality and detail, creating a custom that feels both distinctive and true to Royal Enfield’s spirit.
