Serpent SER903776 S989 Flex Insert Pair  [SER903776]

Track-Focused Flex Inserts for the S989

The Serpent SER903776 Flex Insert is tailored for the Viper S989 GP chassis to provide predictable flex control and better mid corner stability. Each insert locates into the S989 chassis for a firm fit that supports consistent lap times.

Stability When Cornering

These inserts let you tune how the chassis bends under load, which helps with grip and balance through a variety of cornering situations. Small changes to insert position or selection can noticeably affect turn-in and rear traction.

Tool-Free Upgrade Between Sessions

Installation is straightforward and does not require complicated tools or chassis modifications. Drop the inserts into the specified slots in the S989 chassis to switch setup characteristics between sessions or track conditions.