40 Series Tyre Insert for HPI Savage 21/Savage 25 HSA-033 by 3Racing  [HSA-033]

40 Series insert for Savage 21 and 25 applications

The HSA-033 insert is a scale accessory supplied as a pair for HPI Savage 21 and Savage 25 when running 40 Series tyres. It fits between the rim bead and the tyre carcass to help preserve the tyre section during cornering and high-load off-road manoeuvres.

Compatibility centres on the Savage 21 and Savage 25 chassis using 40 Series tyres. To fit, remove the tyre, position the insert evenly on the rim seat, then remount and secure the tyre with glue or appropriate clips. On foam or layered tyres confirm correct seating before final adhesive to avoid trapping the insert.

As a setup item the insert maintains bead support and reduces tyre roll under lateral load, which impacts traction and steering feel. Use the insert in concert with tyre compound and pressure or foam compression tuning to refine steering response and mid-corner grip for club runs or practice.