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Home / Bikes /MX / 2024 85 SX 19/16

2024 85 SX 19/16

ktm-2024-85-sx-19-16

2024 KTM 85 SX 19/16 for Sale at KTM Epping in Epping, VIC | Review Specifications, Features & Information

THE GATE DROPS HERE

If you're reading this, then it is safe to say things have become serious. The 2024 KTM 85 SX - in big wheel guise - is the first real step into the big leagues. Lightweight, powerful and reliable, the KTM 85 SX boasts real big bike components in scaled-down 85 cc geometry, providing the ultimate kickstart to any young racing career.

ENGINE

ENGINE

It took extreme levels of ingenuity to fit the race-winning formula of KTM's bigger 2-strokes into a compact 85 cc engine. The super-compact powerplant is fitted with a 6-speed gearbox and delivers class-leading power and rideability throughout the entire rev range. The powervalve plays a key role in tailoring power delivery to suit track conditions and rider ability, ensuring that the only rider surprised by the incredible performance is the competition.

CYLINDER

CYLINDER

The cylinder on the KTM 85 SX has a bore and stroke of 47mm and 48.95 mm respectively. It features a sophisticated power valve system, which controls both the exhaust valve and the sub exhaust ports, giving the bike excellent torque and power delivery. This translates into significant midrange performance, reducing the need to overwork the clutch in loamy or sandy conditions. An adjuster screw allows the opening time of the power valve to be adjusted to suit rider preference and track conditions.

CRANKCASES AND ENGINE COVERS

CRANKCASES AND ENGINE COVERS

The crankcases are manufactured using a high-pressure die-cast production process, keeping wall thickness to a minimum while retaining strength and durability. The design of the cases is very compact and aims at positioning the shaft arrangements as close as possible to the center of gravity, contributing to better handling.

TRANSMISSION

TRANSMISSION

The KTM 85 SX features a lightweight 6-speed gearbox, engineered to take a beating. The gear ratios have been developed to perfectly match the characteristics of the engine, with easy and precise shifting allowing the rider to slot in the next gear quickly and confidently. The gearbox also features a driveshaft that uses a screw to secure the front sprocket, and a diaphragm spring instead of a circlip, to ensure the front sprocket remains firmly in place. As with all KTM SX models, the KTM 85 SX transmission has a "no-dirt" gear shifter which, like the footpeg design, prevents dirt build-up.

CARBURETOR

CARBURETOR

The KTM 85 SX is fitted with a race-proven MIKUNI TMX carburetor with a 38 mm flat slide. This provides buttery smooth and controllable power all the way up to the rev limiter, while the angle of the intake manifold reduces any overflow of fuel. It's also less sensitive to different altitudes and temperatures, so you can pin it wherever, whenever.

FUEL TANK

FUEL TANK

Holding approximately 5.2 liters of pre-mixed fury, the tank is perfectly shaped to be small and slim to allow for easy and uninhibited rider movement, while still providing enough range to cover a full race at full throttle.

CLUTCH

CLUTCH

Ultra-durable thanks to modified clutch components, the 2024 KTM 85 SX allows riders to actuate the clutch level with ease, thanks to the FORMULA hydraulic system, which conveniently ensures that play is always compensated for. This means the clutch "bite" point remains consistent throughout the ride and under all conditions.

CRANKSHAFT

CRANKSHAFT

The KTM 85 SX features a lightweight crankshaft with optimized balancing for reduced vibration and oscillating mass. As light as the crankshaft is, the rotational inertia has not been compromised, ensuring maximum torque and revs, as well as easy rideability.

COOLING

COOLING

Maintaining the optimal engine temperature is crucial to ensuring consistent horsepower throughout the ride. The KTM 85 SX features radiators which are positioned for a lower center of gravity. Their design matches the shrouds perfectly and offers a great slim feel to the ergonomics. By using CFD technology (computational fluid dynamics) together with a clever coolant circuit routing, the innovative system ensures the optimum engine temperature for the highest performance, no matter what the conditions. The radiators also feature special protectors that serve not only as protection from flying rocks and debris but also as a brace that disperses energy around the radiators in the event of an impact.

EXHAUST

EXHAUST

The exhaust system has been designed to perfectly match the engine's power characteristics and contributes to the outstanding all-round performance and rideability. The header pipe is produced using a 3-dimensional stamping process. Once the components have been shaped, they are robot welded to ensure the highest level of quality, consistency and durability. The lightweight and compact silencer guarantees that sweet 2-stroke sound and falling safely within the noise limits for racing.

SWINGARM

SWINGARM

The one-piece swingarm is manufactured using a gravity die-cast production process for exceptional strength at the lowest possible weight. It offers a wide range of adjustment for the rear wheel, allowing for a shorter wheelbase on tighter, twisty tracks, or a longer wheelbase for greater stability on longer, more choppy tracks. The swingarm's chain measurement markings are visible from above, making adjustment simpler and more accurate.

FRAME

FRAME

The frame on the KTM 85 SX is a scaled-down version of the multi-championship-winning full-size frames. Made from hydroformed chromium-molybdenum steel tubes that are robot welded, the frame is pin-point accurate, ensuring the highest levels of consistent quality and flex characteristics.

SUBFRAME

SUBFRAME

Not only does this lightweight aluminum subframe provide rear fender stability and strong support, it also adds to the overall rigidity and handling of the KTM 85 SX.

WHEELS

WHEELS

The 2024 KTM 85 SX features a 'big wheel' Excel rim combo powdercoated in black, with a 19-inch front wheel and a 16-inch rear. These are mounted on CNC-machined hubs and wrapped in MAXXIS MX-ST tires which deliver exceptional straight-line stability and excellent traction when chasing the holeshot.

FRONT SUSPENSION

FRONT SUSPENSION

The KTM 85 SX front fork features the same suspension technology found in the full-size motocross range. The WP XACT fork with AER technology consists of a split fork design with a capsuled air spring in the left leg and the trusted oil damping system in the right leg. The preload adjustment is extremely simple and can be adjusted by using the single air pressure valve and supplied air pump. The design also allows for easy access to compression and rebound clickers.

REAR SUSPENSION

REAR SUSPENSION

The KTM 85 SX boasts a WP XACT rear shock absorber with sophisticated PDS (Progressive Damping System). This design offers a high progression rate and an excellent response to uneven terrain - just like the bigger bikes. It also allows an impressive 305 mm of rear-wheel travel and is fully adjustable for preload, compression, and rebound.

BRAKES

BRAKES

Bringing this little screamer to a stop is down to the Formula brake system with radial calipers - four pistons in front, two in the rear - with lightweight Wave brake discs. The system is the benchmark in terms of controlled action and braking performance, ensuring powerful and confident braking.

AIRBOX

AIRBOX

The KTM 85 SX airbox is a masterclass in design, optimizing the tiny space available to deliver the best possible performance, while still maintaining the highest level of filter protection. The air filter is easily accessed, without tools, by removing the left side panel. The Twin Air filter and filter cage design feature a simple, secure mounting system, making filter maintenance quick and easy, which means less time in the pits, and more time winning races.

SEAT

SEAT

Providing the perfect blend of grip, durability and comfort, the 2024 KTM 85 SX seat does everything you'd expect it to, while showing off it's its undeniable READY TO RACE and 'orange' heritage.

HANDLEBAR

HANDLEBAR

Hang on tight - the KTM 85 SX features a strong, lightweight, tapered aluminum handlebar, with a specifically shaped bend to suit its overall ergonomics. Additionally, the bike comes standard with ODI lock-on grips, which include a vulcanized grip on the right side and a lock-on grip on the left that do not require glue or wire for mounting.

FOOTPEGS

FOOTPEGS

The KTM 85 SX has "no-dirt" footpegs, which have a simple but effective self-cleaning system that ensures the footpegs return to their original position, providing complete control in all conditions.

DECALS

DECALS

Rocking an all white and orange color plastics combination and orange seat cover - not to mention bold, black, orange and purple graphics - the 2024 KTM 85 SX lines up behind the gate with pure race-winning intent.

ENGINE

  • Transmission

    6-speed

  • Starter

    Kickstarter

  • Stroke

    40.8 mm

  • Bore

    47 mm

  • Clutch

    Wet, multi-disc clutch, Formula hydraulics

  • Displacement

    84.9 cm3

  • EMS

    MEDJ digital

  • Design

    1-cylinder, 2-stroke engine

CHASSIS

  • Weight (Without Fuel)

    68 kg

  • Tank Capacity (Approx.)

    5.2 l

  • Front Brake Disic Diameter

    240 mm

  • Rear Brake  Disic Diameter

    220 mm

  • Front brake

    Disc brake

  • Rear brake

    Disc brake

  • Chain

    1/2 x 5/16"

  • Frame Design

    Central double-cradle-type 25CrMo4 steel

  • Front Suspension

    XACT 43 WP Upside-Down fork, Ø 43 mm

  • Ground Clearance

    362 mm

  • Rear Suspension

    XACT WP PDS mono shock

  • Seat height

    875 mm

  • Steering head angle

    66 °

  • Suspension Travel (Front)

    278 mm

  • Suspension Travel (Rear)

    305 mm

The illustrated vehicles may vary in selected details from the production models and some illustrations feature optional equipment available at additional cost. All information concerning the scope of supply, appearance, services, dimensions and weights is non-binding and specified with the proviso that errors, for instance in printing, setting and/or typing, may occur; such information is subject to change without notice. Please note that model specifications may vary from country to country. In the case of coated surfaces, there may be color differences due to the usual process fluctuations. The consumption values stated refer to the roadworthy series condition of the vehicles at the time of factory delivery.