Foggy Petronas riders Chris Walker and Troy Corser will be testing two variations of engine development at next week's two-day test at Magny-Cours, France.

The team has developed components to try and make the engine rev higher in their search for more power.

If everything goes to plan, the improvements provided by the Petronas engine development team will be available for use at the next round of the Superbike World Championship at Assen in the first week of September.

Both riders will also be carrying out further developmental work on the new STM clutch, again for planned use at Assen.

"One specification of engine will contain cam train revisions, which will allow the engine to rev another 1000rpm," explained Steve Thompson, FPR chief engineer. "The other version will have these cam train revisions, plus a revised cam and a lighter piston. This combination is expected to produce more peak power.

"We have already set the clutch up as close as we can and now the riders need to get used to the different characteristics. In addition, we have a selection of tyres to try that should help us for the race."



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