The Tamiya TT01 Graphite Thick 2.5mm Upper Bumper GPM GTT220 is a precision engineered graphite component created to stiffen the TT01 upper section. Its dense graphite construction provides improved resistance to bending, delivering a firmer platform for tuning suspension and steering behaviour. The 2.5mm section thickness gives targeted reinforcement where it matters most, helping maintain consistent chassis geometry during competitive use.