CDX The Sidewinder Roller Coaster Kit 524 pieces The Firma™ ESCs' 32-bit M4

The Firma™ ESCs' 32-bit M4 processor produces higher resolution signal input and more accurate motor output

4 volts for high power servos

sponsor stickers and wider rear tires imprinted with "Pirelli"

The Hobbywing QuicRun Fusion Pro Elite FOC 2-in-1 ESC & Motor System combines powerful performance

Updated HD stainless steel high clearance lower suspension links

CDX The Sidewinder Roller Coaster Kit 524 pieces The Firma™ ESCs' 32-bit M4The Sidewinder blazes new trails by being the first block based looping roller coaster kit. Modeled after the contemporary steel style coasters, the Sidewinder twists and turns its way through its compact layout. Each kit comes with over 800 pieces that work with any of of the major block construction systems!