50 SX 2021

CUTTING-EDGE 2-STROKE TECHNOLOGY

IMPROVED ERGONOMICS

CHASSIS

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  ENGINE

  The modern, extremely compact 2-stroke engine fitted with an automatic clutch sets the standard in its class with improved power and power band due to a new exhaust pipe. Thanks to the 3-shaft design,...

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  ... the crankshaft is close to the bike’s center of gravity. This does not just benefit the handling, but also allows for a flow optimized intake angle into the reed valve – a prerequisite for maximum performance.

• POWER REDUCTION KIT

  For absolute beginners the engine power can be reduced to a moderate 5.5hp using a kit from the PowerParts program.

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  EXHAUST

  A newly developed exhaust pipe provides a higher output and a smoother power delivery over the entire rev range, making the new 50 SX even more competitive than before.

• CYLINDER

  The high performance cylinder features a pressure controlled exhaust valve (PCEV) and provides an unrivaled performance within the highly competitive 50cm3 class.

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  BODYWORK

  The bodywork is derived from the full-size SX models and provides perfect ergonomics, well thought-out contact points for the rider and maximum freedom of movement. In addition, smart design solutions...

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  ... for the new front and rear fenders are prime examples of an intelligent design, which guarantees maximum stability through a well thought-out structure and mounting.

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  FRAME

  The modern frame produced by WP Performance Systems is made of lightweight, high strength chromoly steel profiles and combines maximum longitudinal stiffness with optimum torsional rigidity. It guaran...

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  ...tees easy handling and precise cornering, but also outstanding stability.

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  GRAPHICS

  Derived from the full-size SX bikes, the graphic design makes the new 50 SX look even cooler. Its frame has a super rugged polymer coating in cheeky black.

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  HANDLEBARS

  Made of high quality aluminum alloy, the handlebars offer top stability and safety. A crash pad on the handlebar brace protects our dearest from rough contact.

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  SWINGARM

  Conceived using the latest in calculation and simulation software, the design and wall thickness have been made for minimum weight at optimum stiffness and precisely defined flexibility. In addition i...

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  ...t features a robust 2-compound chain guide similar to the full-size models.

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  FRONT SUSPENSION

  The new 50 SX is the first model in its class fitted with a modern, fully adjustable air fork: the AER 35, made by WP Suspension. Beside a massive weight reduction of 750g the newly developed upside-d...

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  ...own front forks with 35mm tube diameter and 205mm of travel ensure outstanding comfort, damping characteristics and directional stability. Another main benefit for junior riders is that the air spring fitted in the left fork leg can be adjusted perfectly to the rider’s weight just with a simple air fork pump.

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  REAR SUSPENSION

  On the rear wheel a WP monoshock linked directly to the swingarm provides excellent damping performance and is now fully adjustable in order set the damping perfectly to rider’s preferences and track ...

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  ...conditions. The rear wheel travel is 185mm.

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  WHEELS

  Like the big KTM factory racers, the 50 SX has super lightweight, black anodized, aluminum rims providing highest strength and safety. The OEM knobbly MAXXIS tires grip superbly on any surface.