This R/C model assembly kit creates the 2 belt-driven 4WD TRF421X, the latest model in the line of TRF chassis; it has been tuned based upon racing feedback, and offers superior drivability and cornering performance. Its double deck layout is composed of a 2mm thick aluminum lower deck and carbon fiber upper deck. With a new motor mount, the kit enjoys a lower center of gravity and optimized flex. Fine-tuning of suspension material gives stability in high temperatures or on high grip surfaces, in conjunction with 1.2mm and 1.3mm stabilizer bars. New knuckle arms’ front Ackerman position gives more direct steering, while the hole on the rear arms moves adjuster rod attachment positions backward for optimum grip on low traction surfaces. Drive shafts have swing shaft caps with ball bearings to limit friction and speed loss.

Features

• 2.0mm aluminum lower deck 
• Aluminum motor mount for low center of gravity 2.0mm carbon fiber upper deck (1- and 2-piece types) 
• Carbon fiber-reinforced plastic upper & lower arms Front damper stay mount 
• Rear damper stay mount Double cardan drive shafts (ball bearing type) 
• Lightweight aluminum swing shafts (ball bearing type) Front direct cups (ball bearing type) 
• Steel gear differential joints (ball bearing type) 
• Upper deck flex sleeve 

Requires

• Body 
• Brushless motor 
• Tires 
• Wheels 
• 2-channel R/C system with ESC 
• Battery pack & charger 
• Batteries for transmitter
• Upper deck titanium 3x6mm screws 
• Knuckle arms 
• 1.2mm stabilizer 
• Receiver weight (20g) 
• Battery weight (30g)