• Complete aluminum set • Steering obstructs & 7° C-hubs • Ultra strong • Reduces flex • Improves consistency • primarily for high traction conditions • Increases security • Swiss 7075 T6 aluminum • Fits XB4 & XT4 A Total set of aluminum steering obstructs and C-hubs with 7° caster. Ultra-strong construction provides lengthy life and durability in even the many extreme race conditions. Using the steering blocks in an aluminium product reduces flex, and improves persistence, and certainly will take back the automobile, primarily for high traction conditions. The aluminum components are far more dependable and more powerful. CNC-machined from Swiss 7075 T6 aluminum and black colored coated. Direct replacement for the standard composite parts. Fits all XB4 & XT4 kits.