Top of the Range British made CNC Rear Shock Brace for your HPI Baja from Bonehead RC, compatible with stock and aftermarket shock mounts incl the Bonehead Rear Shock Tower.
 
These are machined from 4mm thick, high quality 3K weave Carbon Fibre sheet with a high gloss finish to both sides. 
 
Extremely strong yet far lighter than Billet alternatives.