HPI Savage 21 170mm CNC Alloy Spring Caps - Precision Fit SAV13170/SC by GPM  [SAV13170/SC]

Precision alloy spring caps for Savage 21 tuning

High-accuracy alloy spring caps manufactured for HPI Savage 21 170mm dampers. This 4-piece set replaces the shock top spring seat to provide a machined seating surface for more consistent spring location and tuning repeatability.

Material and role: alloy construction offers superior stiffness to stock plastic seats, reducing elastic deformation and maintaining preload under high-load cycles. The result is improved repeatability when adjusting ride height and preload increments.

Installation notes: these caps fit at the shock top after standard shock disassembly. Use a hex driver for internal fasteners and protect the cap finish with soft-jaw grips or padded pliers during handling. No additional hardware is supplied.

Tuning context: use these alloy caps to improve spring alignment, ensure consistent preload settings across shocks and limit lateral spring movement during aggressive manoeuvres or landings. The caps are a precision upgrade that enhances the shock-spring interface without altering spring rates or damper internals.