The RockShox TrailHead app is like having a personal suspension tuner in your pocket. We provide personalized setup recommendations, in-depth reference documents, compatible upgrade suggestions, helpful part numbers, and more, for RockShox forks, rear shocks, and seatposts. --- Enter your suspension’s serial number or model code to access: ▸ Your product’s information and specifications ▸ Tuning suggestions, including air pressure and rebound ▸ Documents – User Manuals, Setup and Tuning Guides,