Royal Enfield Thunderbird 350X 2018-2020 is a Cruiser bike with the last recorded price of ₹ 1.57 Lakh. Powered by a 346 cc engine, the Thunderbird 350X 2018-2020 was available in 2 variants. The Thunderbird 350X 2018-2020 was available in 2 colours and weighs 830 kg. The Thunderbird 350X 2018-2020 also features a fuel tank capacity of 135 Litres, ground clearance of 1140 mm, and a user-reported mileage of 35 kmpl. Know more about Royal Enfield Thunderbird 350X Specifications and Features. See details about mileage, engine displacement, power, kerb weight and other specifications. The Royal Enfield Thunderbird 350X is a popular cruiser motorcycle from the iconic Indian manufacturer, Royal Enfield. It is an upgraded version of the Thunderbird 350, with more modern and urban-oriented styling cues. A cruiser bike with a custom look, alloy wheels and tubeless tyres. Read expert opinion, user reviews, specs, features, mileage and price of the discontinued Thunderbird 350X.