1:10 TRF421X Chassis Kit, RC assembly kit

The 1:10 TRF421X Chassis Kit is a 4WD competition chassis built for precise setup work and consistent lap-by-lap response. Numerous aluminum and carbon parts shape a focused platform, while the systematic evolution from the TRF421 brings an optimized suspension layout and a lower center of gravity into the heart of the build. A new aluminum motor mount places the motor 1.04 mm lower than on the TRF421 chassis kit, and the machined 2.0 mm aluminum lower deck is designed around that deeper mounting position to balance chassis flex with weight distribution. Both one-piece and two-piece upper deck versions have been redesigned, and the one-piece deck uses sleeves, titanium flat-head screws, washers and 0-0.3 mm shims to fine-tune flex. New front double-cardan drive shafts work with rear lightweight aluminum universal shafts with bearings, while front direct couplers and rear oil-filled gear differentials manage the drivetrain. Updated front direct couplers and rear differential steel joints replace earlier aluminum parts in these areas. Track tuning goes deeper with a 1 mm narrower upper arm mount intake, bushings for pitch adjustment, and revised uprights with new axle hole positions. The front geometry creates a more direct Ackerman setting, while the rear tie-rod attachment point moves backward to support traction on low-to-medium grip surfaces. Precision stabilizers in 1.2 mm and 1.3 mm diameters, plus a 20 g receiver weight and a 0.6 mm battery weight at 30 g, extend setup options for changing track conditions. Radio gear, a battery pack, a charger, wheels, a bodyshell, a steering servo, an ESC and a motor are required separately.

 

Warning! Not suitable for children under 14 years.