Hero MotoCorp’s upcoming motorcycle has once again been spotted undergoing testing, this time in Ladakh. The super-stealth model, which is expected to be called the Xpulse 421, appears to be developing as the company continues to conduct high-altitude testing ahead of its global launch. Once launched, the motorcycle is expected to take on the likes of the Royal Enfield Himalayan 450.The latest spy shots reveal a number of design options even when hidden. At the front, the motorcycle sports a sleek look with a long upper fairing and an integrated LED headlamp within a sleek design. While the front part looks strong and big, the back is slimmer.The Xpulse 421 is expected to ride on front forks paired with a rear monoshock. Hero can offer adjustable suspension, with adjustable and adjustable front and rear suspension. The test mule also appears to have a 21-inch front wheel and an 18-inch rear wheel wrapped in dual-purpose tires. Braking duties are expected to be handled by disc brakes on both sides and dual ABS systems.Powering the new bike will be a new 421cc, liquid-cooled, single-cylinder engine. Even before Hero MotoCorp has revealed its official specifications, the engine is expected to produce around 40 hp and will likely be mated to a six-speed manual gearbox. The test bike also offers a glimpse of what appears to be a TFT digital instrument cluster. Although Hero MotoCorp hasn’t announced the launch date, repeated sightings of the motorcycle in global testing shows that development is slowly progressing. We can expect a global reveal later this year.