The 32-year-old went on to complete both races despite the injury in order to keep his championship hopes alive. However, with the title chase in mind, Rutter has been advised to rest the injury until the next round of the series at Silverstone on 21 August.
The Midlander failed a medical today and there is still movement in the broken collarbone. With just a 45-point advantage in the ultra-competitive domestic series it is vital for the Kirkby Mallory rider to retain the consistency that he has displayed throughout the 2005 season.
Since team-mate Ryuichi Kiyonari is in Japan for the Suzuka 8-hour Endurance Race, this means that HM Plant Honda Racing will not have a presence at the Superbike Grand National. However, with Karl Harris and Steve Plater confirmed for the Honda-Racing.co.uk team, the manufacturer is still confident of sealing victory at the Wiltshire track.
A third rider will also ride a Honda-Racing.co.uk CBR1000RR Fireblade at the event. Further details about this will be announced next week.
“I’m disappointed to not be riding at Castle Combe this year,” said Rutter. “I competed in the 2004 Superbike Grand National and got a good result with two second place finishes. It was a well organised event and a bit of a change from the BSB tracks.
“The most important thing for me now though is to focus on the British Superbike Championship and my lead in that. It’s not worth risking that away at this stage because of an injury that should have healed. I’m sure Karl and Steve will bring home victory for Honda Racing in my absence.”