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Kit shock setup. Part numbers link to AMain.
Out of the box the Viper 989e runs 800 cst front, 800 cst rear (Serpent oil), on 3 hole (#160134) front, 3 hole (#160134) rear pistons. That is the kit setup; you will need to adjust it for your track conditions. The RC Setup App can help dial it in.
The kit springs are 6.8/39 Purple (#160306) front, 4.9/28 Pink (#160324) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
Free to start · iOS & Android
Your Serpent Viper 989e is in the RC Setup App
Save every setup change you make to your Serpent Viper 989e, get AI tuning answers for that exact car, and log your races — at the track or back in the pits.

