Product Specification : 1. Aluminum main chassis2. Revolutionary multi-link crawler suspension design3. Heavy duty special harden metal ring and pinion gears, axles and axle shafts4. Advanced aluminium alloy lower suspension links5. Advanced locked differentials four wheel drive6. Dual high performance motors design7. 9kg metal gear steering servo8. High performance racing level 7.2V 3000mah NI-MH battery (not included)