Tires are new or about 90 to 95% rubber on them.. Crank is a Hotrods 4mm stroker crankshaft with 2 795 series Wiseco stroker pistons .. Now off the top of my head the 64.00mm and its a stock head but it has been ported..Short or long i have no clue but could call cycle shop and find out.. I would say short because i dont remember him asking at time of install.. I would like to trade for a 4 stroke or get atleast 3,000 out of bike.. I think thats a fair price since motor just cost over 2,400 that includes new flywheel and stator... If thats not fair please make offer.. Thanks