| Part Number: | XRA363353-H | 
                              
            | Quantity In Stock: | 2 | 
                    
                  
                
                XRA363353-H XB4 Composite Upright Rear Hard
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| HARD molded composite rear upright with 2 roll center positions made from super-tough, high-tech composite material. Compact size and superior strength give the perfect balance between reliability and performance. 
 This HARD rear upright is suitable for most track conditions, especially medium- and high-traction tracks.
 
 
 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 for increased dynamic load. On the inner position, smaller 5x10mm ball-bearings are used to minimize unsprung weight.
 
 For use on either left or right sides.
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