Jentin Yamaha have decided to sit out the fourth round of the British Superbike Championship at Thruxton after a troublesome weekend at Donington Park.

Rider Jon Kirkham was faced with an uphill battle after heavily damaging his sole 2009-specification Yamaha R1 in a free practice crash, the reigning Henderson R1 champion duly reverting back to the 2008 bike for the remainder of the weekend.

Struggling to get the best from the dated machine, with just a few days between rounds, Kirkham's person website says the Jentin team will not travel to Thruxton as a result in an attempt to work on a new engine.

Kirkham is currently 17th in the standings with 15 points to his name.


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