The British Superbike season restarts at Thruxton this weekend after a five-week long summer break, with Karl Harris returning to the Rizla Suzuki squad alongside John Reynolds - on heavily developed GSX-R1000's.

Before the break, John Reynolds was the only four-cylinder machine to upset the domination of the V-twin bikes on the grid - always racing at the front and taking a well deserved win at Brands Hatch in June.

Despite the bike's obvious turn of speed and competitiveness, the Suzuki team has worked frantically during the break to improve it in every area. When the GSX-R1000 is taken out on track at Thruxton this weekend, it will incorporate a host of developments all designed to give it an edge over its rivals and take team riders John Reynolds and Karl Harris to podium finishes.

Thruxton will see new suspension parts fitted to the GSX-R1000 to allow the tyres to grip harder and for longer during race conditions. There will also be a modified crank shaft and different connecting rods as per the new BSB regulations, which should give the bike bullet-proof reliability and extra performance to boot. An un-braced standard chassis will allow the bike to flex more and give the riders more control - particularly on bumpy tracks like Thruxton.

"The summer break has been busy for me," began Reynolds. "I've been doing a lot of promotional work with Suzuki and attended the opening of the Crescent Suzuki Performance Centre, which was awesome. We had more than 7000 people visit and I signed a lot of autographs. The support from the fans for the team is incredible and I intend to repay that with race wins in the second half of the season.

"Thruxton is a great track and by its very nature, you can be in fifth place with a lap to go and still win," he revealed. "The team has been working on modifying the engine and chassis on the bike and I'll be giving it some gas this weekend."

As well as the bike moving on a step, the team will benefit from the return of reigning British Supersport Champion Karl Harris, who has been absent from the racing since injuring himself at Oulton Park in May. The Yorkshireman broke his left wrist in a horrendous crash but is now race fit and can't wait for the green light on Sunday.

"It's great to be back in the fold and racing again," smiled Harris. "When you have a long forced absence, it just makes you hungrier for success. My wrist is better and wont hold me back from riding. I went out for a test day at Mallory Park yesterday (Wednesday) and everything went great. I'll need to bed myself into the racing again, but I want to win races before the end of the season."

"Thruxton is a fast track but also difficult to ride because of bumps and turns," added Team Manager Paul Denning. "It is important that the riders don't fight the bikes, but can get on the power earlier, even if it means lower top-end power. We will be trying that package out this weekend. Karl was at Mallory testing during the week and is getting close to race fitness and we are delighted to have him back. To be honest, the whole team is desperate to go racing again and we are all looking forward to the weekend."