Serpent 903020 Viper 990 1/8 4WD GP Touring Car Pro Setup  [SER903020]

Race-Ready Chassis Engineering on the Viper 990

The Serpent 903020 Viper 990 centres its design on an ultra-narrow chassis to concentrate flex control and lower the centre of gravity. The platform is made to respond to setup changes so you can tune handling for fast, consistent laps.

Low Radio Plate and Weight Bridge Access

Milled sections lower the radio plate and refine the chassis flex profile while shrinking the central tank opening. The adjustable central weight bridge is accessible from below for quick mass redistribution during setup sessions.

Improved Rear Kinematics and Steering Tuning

The rear layout has been overhauled to reduce binding and to support reactive toe-change for better mid-corner behaviour. Front blocks accept an eccentric aluminium insert for roll-center tuning and support both trailing and leading steering styles.

Efficient Transmission and Durable Shafts

A compact 2-speed shaft and a well-balanced pulley system reduce losses and sustain power flow. Spring steel drive shafts connect securely to the wheel axles for long-term resistance to race stresses.

Extensive Setup for Race Conditions

The Viper 990 offers adjustable camber and caster settings plus several Ackermann inserts, so you can optimise steering response and tyre wear. The open chassis design and fast-change levers simplify trackside maintenance.

Designed for competitive use, the Viper 990 balances adjustability and durability, making it a solid choice for racers focused on setup and consistency.