This is a replacement XRAY XB4 2021 HSB 3.5mm Graphite Rear Shock Tower.
Rear shock towers are redesigned to accommodate the Horizontal Split Bulkheads (HS), and feature denser upper shock mount positions for more precise set-up adjustments.
The rear shock tower features extra roll center positions for even more fine set-up adjustment as well extra wing mounting positions.
Rear shock towers are machined from premium-grade 3.5 mm graphite and are lightweight & strong, with multiple shock positions and roll center adjustment positions
