RST Carbon Shoulder Cup Insert Grey Insert for Tractech Leather Suits Engineered for serious track riders, this forged carbon knee cup insert delivers enhanced protection and durability where it matters most. Designed specifically for RST Tractech leather suits, it integrates seamlessly into the existing knee armour system to provide superior impact resistance during high-speed cornering and aggressive riding. The lightweight forged carbon construction maintains manoeuvrability whilst reinforcing structural integrity against abrasion and contact. A direct fit replacement that maintains the suit's original comfort and mobility characteristics. Essential upgrade for riders demanding maximum protection on circuit and road.