IMR FX250 19/16 Motocross 250cc Zongshen
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Product details
The powerful heart of your Zongshen 250cc Dirt Bike
The 232 cc Zongshen single-cylinder engine develops 18 hp (13.24 kW) for crisp acceleration and a linear power band, ideal for tackling jumps and fast sections. Its electric start frees you from the kickstarter: a simple press of the button and you are ready to ride, even after a fall in a race. The legendary reliability of this engine, proven in both competition and leisure riding, guarantees hours of trouble-free riding, provided you follow the oil change and air filter intervals recommended by the manufacturer.

A rigid frame built for the Zongshen 250cc Dirt Bike
The tubular steel structure, coupled with a steel swingarm, provides the torsional rigidity needed to absorb violent impacts while maintaining a precise trajectory. With a wheelbase of 1,320 mm and a seat height of 890 mm, the riding position favors cornering control and straight-line stability for adolescent or adult riders. The lightweight 105 kg weight makes it easy to shift your weight and handle ruts, a major advantage for reducing fatigue during long riding sessions. Important reminder: this model is not road-legal, it performs at its best on private tracks or in competition.
Racing suspensions to conquer the most demanding terrains
At the front, the 830 mm travel adjustable hydraulic inverted fork absorbs heavy landings and filters small bumps thanks to its tool-free compression and rebound adjustments. At the rear, the 460 mm shock absorber ensures wheel tracking and rear traction out of corners, even on rough terrain. This balanced front/rear kinematics allows you to tackle whoops and doubles with confidence, keeping both wheels on the ground for maximum traction. Regular maintenance of the oil seals and fork oil will preserve this performance over time.


Biting and enduring braking for your safety on the track
The front dual-piston system clamping a 240 mm disc delivers progressive and adjustable braking power, essential for late braking at the end of the straight. The rear single-piston caliper, also on a 240 mm disc, ensures rear-end stability without the risk of accidental locking. The progressive feel of the assembly inspires confidence from the very first laps, even in mud or sand. Remember to bleed the DOT 4 brake fluid every season and check the pad thickness before each outing to ride with peace of mind.
19/16-inch aluminum wheels: the perfect balance for the Zongshen 250cc Dirt Bike
The classic combination of a 19-inch front and 16-inch rear on lightweight aluminum rims offers the optimal compromise between obstacle clearance and stability when leaning. The large front diameter rolls over roots and stones without sinking, while the wider 16-inch rear maximizes the contact patch to transmit the 18 hp to the ground without excessive wheel spin. Aluminum reduces unsprung weight, improving suspension responsiveness. Check spoke tension and tire pressure (often 0.8 to 1 bar off-road) before each session to maintain this precise handling.

Warning
The user must wear appropriate protective equipment and be under adult supervision.
The purchase of a Dirt bike, Pit bike, or Quad type vehicle made by a minor over 14 years old is carried out under the responsibility of an adult. Only one user is allowed on the vehicle.
Purchases on the XtremRS website must be made by an adult.
Warning: Dirt bike / Pit bike / Quad / Pocket quad vehicles are motorized machines and not toys.
It is recommended to carry out assembly and maintenance by a professional. We recommend users check the condition of the vehicle before and after each use.
General
- Brand IMR
- Reference IMP-4964
Features
- Engine Thermique 4 Temps
- Front Wheel Size 19"
- Rear Wheel Size 16"
- Engine displacement 250cc
- Power 18 CV
- Brake Type Freins à Disques Hydraulique
- Transmission Chaine
- Net Weight 105
- Seat height 890
- Wheelbase 1320
- Starter Type Electrique