The 2019 KTM 85SX gets a new clutch design, power valve system, lighter weight, increased crank inertia, ad 43mm air forks.

The 2018 KTM 85SX is a completely new weapon for class supremacy. An all-new model from the ground up, the 85SX boasts an engine with more power and rideability across the entire rev range and a chassis that allows the rider to use every bit of that power. There is no 85cc machine that is more ready to race than the 2019 KTM 85SX.


• New engine in 2018 with improved power and torque over the entire rev range is 1.5 pounds lighter.
• New orange frame and graphics to match the full size SX bikes
• Cylinder is designed around an all-new power valve system that is adjustable and increases torque and controllability.
• Crankshaft is lighter than before while having more inertia for better torque. Optimized balancing reduces vibrations.
• DS (Diaphragm Spring) clutch is more compact with better performance than a conventional coil spring design.
• Crankcases are more compact with a shaft arrangement that is close as possible to the center of gravity.
• Chromoly steel frame is nearly a pound lighter with 7% more torsional rigidity and 25% less longitudinal stiffness for more agility and better bump absorption.
• WP AER 43 front fork with a sophisticated air spring design and separate damping for easy adjustment to any track condition, rider weight or skill level.
• WP PDS (Progressive Damping System) rear shock provides excellent bump absorption and stability.
• Aluminum subframe is lighter and more compact for better mass centralization.
• Cooling system features integrated crankcase cooling and two radiators for high performance. The newly designed system uses the shroud and grill to protect the radiator in a crash.
• Sharp bodywork that is based on the full-sized SX models with the same contact points and overall feel for perfect ergonomics.
• Airbox similar to the larger SX models allows for air filter changes in seconds without tools.
• Black-coated high-end Excel rims, lightweight, CNC-machined hubs and black spokes with lightweight aluminum nipples ensure the highest stability at minimum weight on the KTM 85SX.

The 2019 KTM 65SX rolls off the assembly line ready to race with a six-speed transmission, big rotors and WP air forks.

The 65SX is a fully-fledged piece of racing kit for young pilots. This year’s top mini features revolutionary WP AER 35mm front forks, cool graphics and detailed improvements that set the standard in terms of power, riding dynamics, equipment and craftsmanship. Further weight reduction from the new WP AER 35 fork make the 65SX even sharper on the track.


• New ODI grips for 2019
• New fork guards
• WP AER 35 air-sprung front fork is 1.7 pounds lighter and makes adjustments for the rider size and track easy
• Sleek bodywork that provides excellent ergonomics for the ultimate in control
• New graphics to match the full-size SX models and orange frame
• The 65SX benefits from cutting-edge 2-stroke technology and an easy to shift 6-speed transmission with a hydraulic clutch.
• A WP PDS monoshock guarantees optimum damping characteristics and outstanding stability. The rear wheel travel is 270mm.
• With adjustable compression and rebound, the suspension can be set up precisely for the rider and track in no time.
• The 65SX is fitted front and rear with massive four-piston calipers that grip lightweight Wave brake discs of 198mm front and 160mm rear diameter.
• Like the big KTM factory racers, the 65SX has super lightweight, black anodized, aluminum rims providing the highest strength.
• Maxxis knobby tires provide superb grip in any terrain

The 50SX the first choice as a stepping stone into the world of MX or for the first racing step on the ladder. It come is a smaller size (the 50SXS Mini shown below) and a more advanced model (50SX shown above).

The 50SX package has an engine that delivers steady, controllable power, incorporating an automatic clutch that allows the rider to concentrate on the track, not shifting. This year’s model features revolutionary WP AER 35 front forks, fully adjustable rear suspension, a new exhaust, ultra-cool graphics and detail improvements that make going fast fun.

The 2019 KTM 50SX Mini.


• New fork guards
• New ODI grips
• New orange frame and graphics to match the full size SX bikes
• WP AER 35 air-sprung fork is easily adjustable for different rider sizes as well as track conditions
• Fully adjustable rear suspension to match the performance of the WP AER 35 fork
• A 3-shaft engine design keeps the crankshaft close to the bike’s center of gravity for quick handling along with room for an optimized reed valve angle for maximum performance
• Bodywork that mimics the full-size SXF line that gives the 50SX a slim profile for excellent ergonomics and handling
• Front and rear hydraulic brakes by Formula combined with lightweight Wave discs are powerful with feedback that gives control for any skill level
• A centrifugal multi-disc automatic clutch provides manageable acceleration and can be adjusted to the track conditions in minutes without tools
• Super lightweight, black anodized aluminum rims are matched to Maxxis tires for maximum grip