Tamiya 19803493 - Blue Knuckle Arm Upgrade for TRF421 wheel over 65% weight loss compared

over 65% weight loss compared to stock screws

as the Fan Holder itself secures the Battery

they also look cool and help to balance the overall downforce by offering a slight upwards sweep

TEAM POWERS - Speed Control Bluetooth Device

Both front and rear springs are shortened from the previous kit (front spring from 70mm to 68mm

Tamiya 19803493 - Blue Knuckle Arm Upgrade for TRF421 wheel over 65% weight loss comparedPrecision steering upgrade for the TRF421 chassis The Tamiya 9803493 Knuckle Arm Set updates the TRF421 with a bright blue finish and reinforced design. Built for racers who demand crisper steering inputs and improved wear resistance, these knuckles combine reliable geometry with a tidy factory finish. Ideal for trimming lap times without changing your core setup.