I HAVE A 2008 270 AND THE MAIN BEARINGS WENT AFTER JUST 5 TRIALS,BVM REPLACED THEM UNDER WARRANTY AND I HAVE HAD NO PROBLEMS SINCE. I WAS TOLD BY A VERY RELIABLE SOURCE THAT BETA USED CHEAPER BEARINGS THAT WERE NOT UP TO THE JOB SO ON A REBUILD BETTER BEARINGS ARE FITTED. I ALSO KNOW THE PEOPLE AT BVM VERY WELL AND THE PERSON WHO'S BIKE IS FOR SALE, THEY WILL LOOK AFTER YOU, THEY HAVE LOOKED AFTER ME EXCELLENTLY.