Royal Enfield has launched two new models in its Thunderbird range of motorycles, dubbed the 2018 Royal Enfield Thunderbird X, in India. As with the standard Thunderbird, the Thunderbird X comes in two versions – 350 cc and 500 cc –
both using a single-cylinder engine.

The difference between the Thunderbird X and the base model is in the styling, starting with the handlebars being lower and brought closer to the rider and one-piece seat. A 19-inch alloy wheel is installed in the front end, an 18-inch out back and shod with tubeless tyres – a first for Royal Enfield.

Aside from the engine, differences between the Thunderbird X 350 and 500 are minimal. The X 350 uses a 346 cc single-cylinder air-cooled power plant fed by carburettor, while the X 500 comes with an air-cooled 499 cc thumper fed by EFI.

Power output for the X 350 is claimed to be 19.8 hp with torque at 28 Nm, while the X 500 comes in at 27.2 hp and 41.3 Nm of torque. Power gets to the ground with a five-speed transmission and chain final drive.

Braking is done with a single hydraulic two-piston calliper clamping a 280 mm disc in front and a 240 mm diameter disc with single-piston calliper in the rear, with no mention of ABS in the specifications. Forks are 41 mm diameter telescopic units and twin shock absorbers in the rear.

In terms of fit-out, the Thunderbird X comes with front and rear LED lights, analogue instruments, blacked-out exhaust, with fuel carried in a 20-litre tank, and an overall weight of 197 kg. Pricing for the 2018 Royal Enfield Thunderbird X 350 in India is 1.56 lakh rupees (RM9,397), while the Thunderbird X 500 is priced at 1.98 lakh rupees (RM11,927).