Upgrading the rear shock on a Specialized Stumpjumper (2021+) typically requires a 210x50mm shock for the standard model, while the EVO variant uses a 210x55mm size. Popular upgrades include air shocks like the Fox Float X for improved mid-stroke support or robust coil options like the RockShox Super Deluxe for enhanced traction. For a detailed guide on selecting and installing a coil shock, see The Lost Co . Damaged 2026 specialized stumpjumper shock - Facebook