Serpent 903020 Viper 990 4WD 1/8 GP Touring Car Race Edition  [SER903020]

Track-Focused Design of the Serpent 903020 Viper 990

The Serpent 903020 Viper 990 delivers a purpose-built 1/8 GP touring platform with an ultra-narrow chassis that sharpens handling and weight control. The layout promotes predictable flex and lets experienced tuners refine balance for different track conditions.

Chassis Milling and Balance Improvements

The chassis is machined to lower the radio plate and improve flex response, while reducing the central opening under the fuel tank to stabilise the centre of gravity. A centrally mounted weight bridge can be accessed and adjusted from below for quick setup changes between meetings.

Rear Geometry and Steering Adjustments

The rear suspension has been reworked to allow reactive toe-change and prevent bind, improving rotation through corners. Up front, the steering block accepts an eccentric aluminium insert for roll-center changes and supports both trailing and leading steering layouts.

Drive Efficiency and Component Durability

The drivetrain uses a light 2-speed shaft and a carefully balanced pulley arrangement to cut friction and preserve power delivery. Spring steel drive shafts link the transmission to the wheel axles for proven strength under racing loads.

Setup Flexibility for Club and National Racing

A broad range of adjustment points lets you dial camber, caster and Ackermann to match tyre and surface choices. The open layout and quick-change levers also make routine servicing and swaps faster during race day.

The Viper 990 is built for racers who prioritise precise handling and adjustability. Its construction and setup range make it a sensible choice for anyone aiming to improve lap times.