The 3Racing Graphite Main Shaft provides a straightforward performance option for Tamiya F103RM builders who want lighter moving parts without complex changes. It is produced to align with the F103RM chassis and replaces the factory shaft with a stiffer, lighter alternative.
Graphite is prized for its low weight and stable stiffness, which reduces spinning mass and helps the car react quicker to throttle and steering inputs. For club racers and street tuners alike, this change can sharpen acceleration and improve the car's balance through corners.
Installation follows the same steps as the standard unit on a Tamiya F103RM. Make sure components are clean, bearings turn freely, and that you perform a short test run after fitting to confirm correct seating and smooth rotation.
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