A couple of years ago, Sinroja Motorcycles were one of the first workshops to join Royal Enfield?s new custom program. They built a couple of bikes, and the relationship went well. So when Sinroja were looking for a brand partner for their latest project, they knew just who to call.
The Leicester-based custom shop wanted to enter the European Sultans of Sprint race series in the ‘Factory’ class. All they needed a factory to collaborate with.

Royal Enfield and their Industrial Design boss Adrian Sellers came to the party with a brand new Continental GT 650, but there was an unexpected twist. By the time everything was singed off, Sinroja had just four weeks to prep the bike.
?Usually we can do aesthetics or performance in that time,? brothers Rahul and Birju Sinroja tell us, ?but this project needed both. It had to look good and go fast.?
It certainly needed to be fast. Sinroja?s Continental would be competing with a nitrous-powered BMW 1250, a nitrous-powered Indian Scout ridden by the legendary Randy Mamola, and a supercharged 200-plus hp Harley.
The brothers already had a concept in mind: they would loosely take inspiration from a drag racer Royal Enfield themselves had previously built, ‘The Lock Stock.’

With help from Tamas Jakus at Jakusa Design, they quickly mocked up the design and graphics for ‘Two Smoking Barrels.’
But sharp looks alone weren’t going to cut it. With just 47 hp from its 648 cc parallel twin motor, t...