Apollo's Thunder 140cc offers a great next step up for the younger riders looking to transition to a larger frame bike. With a quick-shifting 4-speed manual transmission the Thunder offers an outstanding power to weight ratio and it is geared for power in the middle where most riding is done. Adjustable inverted front forks with 200mm of travel over a big 17-inch front tire give the Thunder motorcycle over 13 inches of ground clearance. Mono Shock Rear End. The 33-inch seat height is tall enough for tall riders and the lightweight frame gives younger riders a great option. Kickstart backup and CDI ignition. Front and rear hydraulic disc brakes. Great Graphics package