This event is for road bikes. Whether your road bike is an entry level couple hundred quid machine or a ten grand superbike, so long as it's a road bike with drop handlebars and wheels with spokes you are fine. Aerodynamic add ons like triathlon clip on aerobars are not allowed, nor are solid disc wheels. Disk brakes are obviously allowed for the avoidance of doubt. Also not allowed are aerodynamic helmets with fairings, pointy tails and visors. Consider what you'd wear for a club ride or a sportive and ride that. While CTT are coming up with strict definitions we are taking the approach of competing in the spirit of the event. If you have any questions please just ask. If you are a triathlete that normally uses clip on aero bars then please select the other TT bike (points) event. cheers Mike