HPI Savage 21 170mm Shock Spring Caps - Performance SAV13170/SC by GPM  [SAV13170/SC]

Durable alloy caps for Savage 21 spring seats

Replacement alloy spring caps designed for HPI Savage 21 170mm shock absorbers. The four-piece set fits on the shock top where the coil spring locates, providing a tougher seating surface for tuning and ride-height adjustments.

Material and role: alloy construction offers a firmer seat versus original plastic parts, aiding in consistent spring preload and reducing seat flex during hard landings and rough terrain.

Installation notes: to fit these, remove the original spring seats and mount the alloy caps at the shock top. Basic workshop tools such as a hex driver and padded pliers or a soft-jaw vice are recommended; no additional fasteners are included.

Tuning context: drivers fit alloy spring caps to maintain spring alignment, make small preload changes repeatable and prevent the spring from walking under side loads. This modest upgrade improves seat stability without modifying springs or damper internals.