KTM 50 SX Junior 2007 - Specifications & Review

50 SX Junior

Article Complete Info

Articleid35950
CategoryMinibike-cross
MakeKTM
Model50 SX Junior
Year2007

Chassis, Suspension, Brakes & Wheels

FrametypeCentral double-cradle-type frame
FrontbrakesSingle disc
Frontbrakesdiameter160 mm (6.3 inches)
FrontsuspensionMarzocchi, 32 mm (1.26
Frontwheeltravel115 mm (4.5 inches)
Rake24.0°
RearbrakesExpanding brake (drum brake)
Rearbrakesdiameter90 mm (3.5 inches)
RearsuspensionWP monoshock
Rearwheeltravel185 mm (7.3 inches)

Engine & Transmission

Borexstroke39.5 x 40.0 mm (1.6 x 1.6 inches)
ClutchCentrifugal clutch (adjustable)
CoolingsystemLiquid
Displacement49.00 ccm (2.99 cubic inches)
EnginedetailsSingle cylinder, two-stroke
ExhaustsystemAluminium
FuelsystemCarburettor. Dell´Orto PHVA 14 DS
IgnitionSeletra analogue
LubricationsystemMixture 1:60
TransmissiontypefinaldriveChain

Other Specifications

StarterKick

Physical Measures & Capacities

Dryweight37.6 kg (82.9 pounds)
Fuelcapacity1.80 litres (0.48 gallons)
Groundclearance220 mm (8.7 inches)
Seatheight585 mm (23.0 inches) If adjustable, lowest setting.

About KTM 50 SX Junior 2007

Introducing the 2007 KTM 50 SX Junior, a spirited minibike-cross machine designed specifically for young riders venturing into the exhilarating world of motocross. With its lightweight construction and high-performance capabilities, this model serves as the perfect entry point for budding racers who crave adventure on two wheels. KTM has established a strong reputation within the motocross community, and the 50 SX Junior is a testament to their commitment to quality, performance, and rider safety. Crafted to instill confidence in young riders, this motorcycle combines cutting-edge technology with user-friendly features, allowing for a thrilling yet manageable riding experience.

At the heart of the 50 SX Junior lies a robust 49cc single-cylinder, two-stroke engine that delivers an exciting power band tailored for younger riders. Thanks to its liquid cooling system and a well-tuned Dell'Orto PHVA 14 DS carburettor, this engine produces a smooth and responsive throttle, ensuring that every twist of the grip translates to exhilarating acceleration. The adjustable centrifugal clutch provides a forgiving learning curve, allowing riders to hone their skills without the added complexity of traditional clutches. With a combined weight of only 37.6 kg (82.9 pounds), the bike’s nimble handling and lightweight frame make it an absolute joy to ride, giving young racers the confidence they need to tackle jumps and corners alike.

The 2007 KTM 50 SX Junior is laden with features that enhance its performance and rider experience. Its central double-cradle frame is not only durable but also instills stability during high-speed maneuvers. The Marzocchi front forks and WP monoshock rear suspension system provide excellent travel—115 mm in the front and an impressive 185 mm in the rear—offering a plush ride over rough terrain. The front disc brake, boasting a diameter of 160 mm, provides reliable stopping power, while the rear drum brake ensures consistent performance. With a ground clearance of 220 mm and an adjustable seat height starting at 585 mm, this bike is designed to grow with its rider, making it an ideal choice for those looking to advance their skills.

PROs:

  1. Lightweight and Agile: At just 37.6 kg, the bike is easy to handle, making it perfect for young and inexperienced riders.
  2. User-Friendly Clutch System: The adjustable centrifugal clutch simplifies the learning process, allowing riders to focus on improving their motocross skills.
  3. High-Quality Suspension: The combination of Marzocchi forks and WP monoshock offers superior handling and comfort for tackling various terrains.

CONs:

  1. Limited Fuel Capacity: With a fuel tank of only 1.80 litres, frequent refueling may be necessary during extended rides.
  2. Two-Stroke Engine Maintenance: The two-stroke engine may require more frequent maintenance and tuning compared to four-stroke counterparts, which can be a drawback for new owners.
  3. Not Suitable for Adult Riders: The bike is specifically designed for younger riders, which limits its appeal for those looking for a more powerful or adult-sized motorcycle.

The 2007 KTM 50 SX Junior is an exceptional choice for young enthusiasts eager to make their mark in the motocross world, combining performance, safety, and the joy of riding into one thrilling package.

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