Optimized and UpgradedThe differential of this rc truck is upgraded to a helical tooth design Compared with a straight tooth differential the helical tooth differential reduces friction and noise by beveling the contact surface so it is smoother which can effectively prolong the service life and improve the efficiency of power transmission The helical gears are stronger and can withstand greater loads making the helical gear differential more durable than the straight gear differential 2847 Brushless Motor68KMH 40MPH 45A Brushless ESCThe RC Car equipped with 2847 powerful motor and it allows the remote control monster truck to have a max speed of 68KMH 40MPX makes the cars race faster than others ones Built in 45A Brushless ESC precision engineered for maximum energy conversion to support 3S 111V battery max74V111V Battery 2 Packs 2600mAH BatteriesThe RC Buggy comes with 2x 74V 2600mAH batteries Increasing the runtime that will go further The toy gift RC vehicle for adults and boys will run for up to 40 minutes at a time Feel the adrenaline as you tear up the track with our high speed RC Trucks Material UpgradeThe material of the differential is also upgraded to 40cr chrome steel and the special material also makes the differential more wearresistant After more than 200 extreme driving tests at top speeds and on rough roads the differential is still intact It is more stable and improves the overall handling of the brushless rc car Upgraded Oil Filled ShocksThe rc cars for adults comes with four aluminum oilfilled shocks and four heavyduty wheels allowing you to drive this highend RC model in a variety of terrains such as sand desert 45 rock climbing puddles grass etc 6KG Upgraded Servo Flexible Construction The waterproof 4wd rc cars 6 KG Servo complement this RC cars ultrareliable drive systemfour wheels are installed independent suspension springs let crosscountry car body is more flexible and plays shockproof function to protect electronic components inside the car bodyOffroad rubber tires material is made of high quality PVC material soft and elastic can be adjusted based on the road 2 Speed Mode24GHz Sender with range of up to 80m262 ft and highly responsive steering and throttle is included You can race with your friends or kids at the same time Furthermore the rc racing car has full speed 68kmH and half speed mode34kmH easy to switch and enjoy the speed