Serpent 904221 Viper 990E Belt Tensioner Plate Racing Upgrade  [SER904221]

Serpent 904221 upgrade for tighter belts on the Viper 990E

For club racers and weekend speedsters wanting reliable belt behaviour, the Serpent 904221 Belt Tensioner Plate for the Viper 990E is a practical upgrade. It keeps belt tension consistent under hard acceleration and braking, helping to prevent slip and premature wear. Built to handle regular track abuse, it supports longer service intervals for your drivetrain.

How the tensioner helps drivetrain longevity

The tensioner plate holds belts at a steady tension to lower the chance of slippage and reduce uneven wear across pulleys and belts. That means fewer maintenance stops and more track time for your Viper 990E. Its sturdy construction is aimed at people who push their kits on race day and practice sessions alike.

Suited to competitive and local track use

Whether you run practice laps or compete, this tensioner plate adds stability to belt-driven systems and keeps power delivery consistent. Proper tension helps your Viper 990E run smoothly lap after lap, improving predictability on corner exit and under load.