B6-4 Std Rocket Engine - EST1606 YOKB10-011BA Unassembled kitPre-cut clear TRX-4 Sport

Unassembled kitPre-cut clear TRX-4 Sport bodyIncludes over $70 of scale accessoriesA full-color step-by-step assembly manualPortal AxlesSteel-gear single-speed transmissionAluminum Coilover GTS shocks1

it offers impressive acceleration and control

fully equipped

computer-optimized supercar package

B6-4 Std Rocket Engine - EST1606 YOKB10-011BA Unassembled kitPre-cut clear TRX-4 SportThis is the B6 4 Standard Model Rocket Engines Motors from Estes. Suitable for Ages 10 & Older with Adult Supervision for Those Under 12. Features Single stage engine Standard engine designed for flights in rockets weighing less than 4 ounces, including the engine Engines tested and certified by the NAR Easy to use and comes with clear instructions Specs Length: 2. 75" (7cm) Diameter: . 69" (18mm)