[6] British journalists, Gavin Trippe and Bruce Cox, ran California based Motor Cycle Weekly and promoted motorcycle races in the US.

They met with Chris Lowe of Motor Circuit Developments (MCD), who ran Brands Hatch, Oulton Park and Mallory Park circuits, and Jim Swift of the British Motorcycle Racing Club at the 1970 Daytona 200 and the plan for the Transatlantic Trophy was formulated.

[7][8] Lowe approached BSA/Triumph who agreed to supply 750 cc racing triples for the riders and to support the series.

For the mutual benefit of both WSB and the Transatlantic Match (which both used similar specification machines) the Transatlanic series was expanded to four teams and renamed the Eurolantic Challenge as it included European riders.

The final match, known as the Transatlantic Superbike Challenge that year, was held at Brands Hatch and Mallory Park in May 1991.

[1][7] BSA/Triumph had updated the racing triples for the 1971 Daytona 200, which BSA works rider Dick Mann had won.

No longer a one-make series, the BSAs and Triumphs were joined by Nortons, Suzukis and a Harley Davidson.

[1] Cal Rayborn, on an obsolete Harley Davidson as the factory refused to let him use his works machine, and Ray Pickrell were the top scorers with 3 wins each.

Dave Croxford entered the series on one of the Cosworth-Nortons but the underdeveloped machine performed poorly at Brands and was withdrawn for the other two rounds.

[1] The American team was to consist of Dave Aldana, Steve Baker, Randy Cleek, Pat Evans, Pat Hennen, Ron Pierce, Kenny Roberts, Gary Scott and Dave Emde as reserve.

The rest of the teams was decided by lap times during a qualifying session prior to the first race at Brands Hatch.

[1][46] Americans won all the races: Kenny Roberts 3, Freddie Spencer 2 and Randy Mamola 1.

World Champion Kenny Roberts was unavailable for the series as he was required by Yamaha to test their new square four GP racer.

[48] Dave Aldana and Mike Baldwin were competing in the 24 Hours of Le Mans endurance race for Honda.

[13] Yoshimura and Suzuki refused to allow Wes Cooley to use his Superbike for the series and he used a borrowed a 750 Yamaha for the races.

A Honda America Superbike wasn't available for Freddie Spencer to use and had to compete on a borrowed Suzuki RG500.

[3] John Newbold was the top points scorer for Great Britain, who won the series 466-345..[49] The American team was again understrength this year with Kenny Roberts and Randy Mamola testing GP machines.

[13] The later running of the races meant the GP season had started and Honda would not sanction Freddie Spencer taking part.

Kenny Roberts and Eddie Lawson were both on the Yamaha square 4 680 cc OW69 that they had scored a 1-2 at that year's Daytona 200.

But the wet conditions and tight circuits didn't allow them to make full use of the considerable power the Yamaha made.

Honda refused to let Freddie Spencer take part and Yamaha blocked Eddie Lawson's participation.

Haslam brought a new road-going version of the VFR750 from a local dealer, stripped off as many road going parts and fitted racing tyres.

It rained during the first race making the lack of power and ground clearance compared to the full-blown superbikes less of a problem.

[3] Donington was to host the inaugural round of the Superbike World Championship on Easter Sunday.

For the mutual benefit of both WSB and the Transatlantic Match (which both used similar specification machines) the Transatlanic series was expanded to four teams and renamed the Eurolantic Challenge as it included European riders.

For the promotors this allowed them to spread the costs over two series, and for the riders this offered the prospect of extra payday.

For the first time, Yoshimura Suzuki sent a factory crew to support Doug Polen and Scott Gray.

Although nominally 588 cc, the FIM had yet to agree with Norton the method of measuring displacement of the rotary engine.

[5] Triumph Motorcycles Ltd revived the concept in 1996 with a single-make 3 race match at Donington using the 900 cc Speed Triple.

[3][58] The concept was again revived in May 2015 as part of the MCN Festival of Motorcycling at the East of England Showground when a Transatlantic Trophy was staged between British and American teams flat track racing.