The HSA-033 performance insert is supplied as a pair and is engineered for Savage 21 and Savage 25 wheel applications using 40 Series tyres. It locates between the rim bead and tyre carcass to maintain section shape under lateral loads and aggressive off-road use.
Intended fitment is Savage 21 and Savage 25 with standard 40 Series rims. Installation follows tyre removal, even seating of the insert on the rim seat and remounting with glue or retaining clips. Verify insert position on foam or multi-density constructions before final adhesive to ensure consistent fitment without pinch points.
From a setup standpoint the insert increases bead support and reduces tyre roll during cornering, providing a more predictable steering platform. Use it alongside tyre compound selection and air or foam compression adjustments to dial steering neutrality and mid-corner grip for competitive club runs or timed practice.