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Xray XB4 Graphite Composite Rear Upright #XR-363353-G
This is an optional XRAY Graphite Composite Rear Upright. This molded composite rear upright with 2 roll center positions is made from specially-formulated graphite composite material. It features the perfect balance between reliability and performance; for use on left or right side. Perfect for high-traction conditions; the graphite rear uprights make the car more stable and increase cornering speed. The compact rear uprights are small in size but are very strong thanks to the special composite mixture used. The lower roll center adjustment has 1 fixed position on the upright, while the upper roll center adjustment has 3 different positions. The rear uprights feature 0░ toe to ensure stability and prevent suspension geometry changes in hard crashes. For maximum drivetrain reliability, larger 5x12mm ball-bearings are used in the outer position with increased dynamic load. On the inner position, smaller 5x10mm ball-bearings are used to minimize unsprung weight.