CDX The Sidewinder Roller Coaster Kit 524 pieces The front-loading design makes inserting

The front-loading design makes inserting darts a simple step

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

Updated HD stainless steel high clearance lower suspension links

The Spektrum S6240 servo offers a high-speed solution in a compact form factor for 1/10 class vehicles

CDX The Sidewinder Roller Coaster Kit 524 pieces The front-loading design makes insertingThe 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!