REAR AXLE 30X2.5X1040 system-rib-chest-protection which means that your required

which means that your required kart seat size is unaffected by the addition of a P1 rib protector

which helps the driver breath while retaining exactly the right tension to protect the ribs

The VG seats popular because of their level of flexibility

T14VG Seats - Medium/Soft Rigitity for Smaller race drivers

Inside the P1 is carefully shaped of highly technical composite panels designed to spread the load perfectly over the whole ribcage and always retain their shape even on a hot day and the internal anti shock foam contributes to an ultra high level of load spreading over the whole ribcage

REAR AXLE 30X2.5X1040 system-rib-chest-protection which means that your required