Royal Enfield has unveiled a brand new custom build motorcycle in collaboration with Anthony Partridge.

Anthony, who has over 10 years’ experience designing and building motorcycles, was scouting for a new project for the second season of Goblin Works Garage, the Discovery Channel TV series he co-hosts.

Speaking of the build and the process behind its inception, Adrian Sellers, who heads the Custom Program at Royal Enfield, told Bikers Nod: “We truly believe that Royal Enfield makes the most custom friendly motorcycles in the world –providing incredible base canvases to then express your own creativity. How each individual then decides to take them to the next level is all down to their own imagination. Over the years we’ve been fortunate enough to collaborate with some of the very finest bike builders in the world and craft some simply extraordinary machines. We celebrate the wild and the creative, the wonderful and the weird – and so this project with Anthony was a continuation of everything that excites and motivates us as a brand and as a Royal Enfield Custom Team.”

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Anthony had in his sights the idea of working with one of Royal Enfield’s Twins, which are ideally suited to custom projects. He says: “Bikes like these are the best to work with, as I get to focus on my craft, without having to plan around re-homing complex sensors and wiring looms.”

Adrian gave the following simple brief: to create “a thoroughbred racer.” To which Anthony responded: “Sticking to my performance ethos I wanted to go balls-to-the-wall and turn this lil’ 650 into a bonafide race bike.”

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Based on the Royal Enfield 650 Continental GT platform, central to the concept was the desire to make the motorcycle faster, lighter and more exciting to ride, with a flash design. The Continental GT is an exceptional base from which to work; it is simple, clean and not overly complicated without a mass of electronics.

The bodywork on the motorcycle was designed to be the base concept for a body kit, allowing anyone to purchase their own kit for a Continental GT and build a similar bike at home. The start point for the build was to map the frame and turn it into a 3D model with the help of Paul Drake from Ziggymoto. The bodywork was designed to work with the modified frame converted from a twin shock set up to a mono shock, as well as working with the stock set up.

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While the bodywork was in hand the focus moved to the bike’s frame, designing and machining the billet parts, as well as the race components. All of the stock parts, bar the frame, motor and any necessary wiring and electronics were removed to strip as much weight off the bike as possible, enhancing the motorcycle’s performance. Ohlins’ FGR300 front forks and a TTX GP pro rear mono shock were chosen for the suspension. BST provided the superlight full Carbon Rapid Tek race wheels and Dunlop EU wrapped the rims in the sticky Sportmax GPA pro soft compound tyres, as well as supplying a set of KR4541 race slicks and rain tyres for the track.

Galfer floating wave grooved CRW brake discs were fitted at the front and rear. Brembo nickel-plated GP4-RX billet race callipers were installed at the front of the bike and a Brembo racing CNC P4 34 Nickel super sport rear axial billet calliper was built in at the back.

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Anthony chose to run Magura’s Hymec hydro clutch conversion to keep it both visually symmetrical and for a soft, more consistent ride. The front end was removed and the stock Royal Enfield triple trees, new forks, callipers and discs were sent to FastTek to machine create a set of new lightweight billet triple trees to house the new front end and incorporate a pocket for a Motogadget digital speedo.

With the help of Gavin from GIA Engineering, a huge 190 rear tyre was fitted and a 5.5 inch wheel in a frame built to take a 130 tyre. Gavin created the lightweight swingarm – including a rear brake hanger, a new rear axle and the progressive linkage. An ally fuel cell was created to replace the OEM gas tank, fitting neatly under the carbon body work and welded in the ally flange needed to bolt in the endurance style titanium fuel filler provided by Racefit UK.

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As well as chopping the rear subframe and welding in new rear downtube supports and a brace to take the bike from twin to mono shock, the team notched the frame on the left side 20mm to accommodate the custom front drive sprocket that was lengthened to 12mm to move the chain out for the width of the rear wheel. Chris at Hardknocks Speedshop in Oxford secured the Motogadget electronics and Rizoma lights, as well as clip-ons, rear sets and the final bits mocked up.

After trialling the custom build, Anthony said: “I did a few laps on the stock bike with the head designer of the Continental GT there to watch and then took out my new improved version and the difference was night and day. The custom bike feels like a proper race bike – lighter, faster, way more agile than stock and heaps of fun to ride.”

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For more information on this custom build, the Goblin Works episode is available on catch-up on the Discovery Channel or DPlay in the UK.

For more information about Royal Enfield visit https://www.royalenfield.com/uk