ZUUMAV S9-YK250: Built for High-Speed Off-Road Action

High-RPM Power Reserve: “Sustained Explosive Power” for Off-Road Courses
Equipped with a 249.9cc single-cylinder, four-stroke, water-cooled DOHC four-valve engine, it delivers a peak power of 30kW at 11,500 rpm and peak torque of 26N·m at 10,500 rpm, paired with a 13.9:1 high compression ratio—perfectly tailored for the “frequent high-revving and short-distance rapid acceleration” demands of off-road races.

Whether it’s instant acceleration out of corners or seamless power delivery between consecutive dirt mounds, it maintains robust output. Meanwhile, the water-cooling system stabilizes engine temperature under high-load conditions, preventing power fade during long, high-intensity races and ensuring consistent performance across single/multi-round events.
Exceptional Passability: “Obstacle-Free Pass” for Off-Road Barriers
The 330mm ultra-high ground clearance is a core advantage for off-road courses: it glides smoothly over obstacles like deep ruts, mounds, and rock piles without deliberate deceleration, drastically reducing the risk of chassis scuffs or bottoming out. Combined with the compact 2190×830×1310mm body dimensions, it maneuvers nimbly through tight course sections (e.g., slalom, S-curves), balancing “passability” and “small-space handling efficiency.”

Lightweight + Optimal Wheelbase: “Precision Response” for Course Handling
The 105kg lightweight curb weight is a key asset for off-road racing: it minimizes rider fatigue during consecutive jumps (aiding quick body re-alignment) and sharp turns (enabling rapid direction changes), while boosting acceleration/braking response.

The 1490mm wheelbase strikes a balance between stability and agility: the longer wheelbase keeps the body steady during high-speed dirt mound jumps, while the relatively short wheelbase enhances maneuverability in slaloms and continuous curves—ideal for the complex conditions of off-road courses.
Off-Road-Exclusive Configuration: “Detail Adaptation” for Racing Scenarios
Tire Specs: Pneumax off-road tires (front: 80/100-21; rear: 110/90-19) — the narrow front tire ensures steering flexibility, while the wide rear tire strengthens grip on mud/sand surfaces, preventing slippage during course starts and turns.

955mm High Seat Height: Suits the “standing riding posture” common in off-road racing, letting riders adjust their center of gravity more flexibly to cushion the body on undulating sections.
7.5L Fuel Tank: Meets the endurance needs of multi-round off-road races, reducing time lost to mid-event refueling.

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