[Surfjayce]

SV650SK5, just had new tyres and new fork stanchions fitted so decided to go for a long ride to settle everything in, about 25 min into my ride the bike started cutting out when down shifting for islands or junctions and wouldnt start again without giving it some throttle, i know its a little vague but any suggestions on what could cause this? just trying to narrow stuff down.

cheers

to note:

There was half a tank of quite old petrol in the tank but was riding fine, then i topped up with fresh petrol and thats when this started

The oil and filter were changed last year and havnt done many miles