It would most likely be a SX or MXC. It could however be a EXC that someone has pulled the headlight and tailight off of.
the stater needs to be rewound
520
The Rockrider ST 520 Decathlon mountain bike features a lightweight aluminum frame, 27.5-inch wheels, 100mm front suspension, 24-speed Shimano gears, and hydraulic disc brakes. It is designed for off-road trails and mountain biking adventures.
It'll improve accelerating but it might reduce top speed a little.
520
The KTM 520, specifically the KTM 520 EXC model, typically produces around 50 horsepower. This power output can vary slightly depending on the specific year and modifications made to the bike. The engine is known for its strong performance and torque, making it popular among off-road enthusiasts.
520
4.8 percent of 520 = 24.96%4.8% of 520= 4.8% * 520= 0.048 * 520= 24.96%
17% of 520= 17% * 520= 0.17 * 520= 88.4
70% of 520= 70% * 520= 0.7 * 520= 364
85% of 520= 85% * 520= 0.85 * 520= 442
11% of 520 = 11% * 520 = 0.11 * 520 = 57.2