HPI 4690 - INNER FOAM 57x35mm (2.2 in./MEDIUM) Axial Parts Note: Collars fit 1

Note: Collars fit 1

flexible movement

It installs as a direct replacement with basic hand tools — a quick upgrade with lasting benefits

Measures: Tower: 2 x 2 x 4-1/2" 5 x 5 x 11

HPI 4690 - INNER FOAM 57x35mm (2.2 in./MEDIUM) Axial Parts Note: Collars fit 1HPI 4690 INNER FOAM 57x35mm (2. 2 in. MEDIUM) Genuine HPI Racing 57x35mm inner foams in medium density for 2. 2in tires. Inner foam supports the tire carcass, keeping the contact patch consistent so your grip stays predictable through corners and over bumps. Refresh worn out inserts when re gluing tires to bring back consistent handling and tire shape. Genuine HPI Racing part #4690 Inner foam, 57x35mm Medium density For 2. 2in tires Keeps tire shape