Ready to step up into the big leagues? The 2025 KTM 85 SX is ready to take you there. Developed on track and at an international level, the KTM 85 SX boasts significantly enhanced handling, improved power delivery, and notable enhancements in race pace over longer distances. All said - the KTM 85 SX is 100% READY TO RACE.

The 2025 KTM 85 SX packs fresh firepower and gives an updated engine to starting gate. Weighing 120 grams less than the previous generation, the updated engine produces higher performance and optimised integration with the chassis updates. This means more punch in the low and mid-RPM range, more torque, and improved reliability.

The 2025 KTM 85 SX boasts a completely new high-strength chromium molybdenum steel frame design, taken over the full-sized KTM SX range. Together with forged connecting parts, carefully calculated parameters of longitudinal flex and torsional rigidity, and incorporated sheet metal parts allow tailor-made stiffness. The new frame layout features a typical MX design without any cross tube behind the steering head. The rear shock mount is separated from the main upper frame tube like our full-size models, with frame protectors as standard

Clicking into gear is made even smoother for 2025, with an update to the shift drum. Thanks to the new coating finish, shifting up and down the 'box is smoother, more reliable, and rock-solid even after many hours of use.

Now pay attention; this is a mouthful - 1-piece polyamide glass-fiber-reinforced aluminum. That's what the subframe is constructed from, for good reason. Not only does this reduce the weight of the whole construction, but it also features specifically engineered rigidity, delivering outstanding handling and rider feedback. It also makes for the perfect spot for integrated electronics, seat comfort, and hour meter mounting positions.

Ride out sooner with easy Finance & Insurance - Now available!

Our passion is motorsports and adventuring on two wheels. Thats why were committed to helping you get you on the road, enjoying your product sooner rather than later!

We finance new, used and off road bikes from Yamaha, KTM, Husqvarna and Honda, as well as all the accessories that go with them. If you are looking to finance your new product, we offer value, competitive rates and much more.

 Easy applications

 Fixed Interest Rates and Repayments

 Flexible loan terms

 Finance Options for Accessories and Insurance

 

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Want to apply online? Simply click the button below to fill out an application below and once approved, our Finance Manager will contact you with more information.

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On Two Wheels is the home of KTM in Gledswood Hills, NSW. We are a family owned authorised KTM dealership specialising in genuine KTM apparel, accessories, gifts, parts and servicing.

We know that your KTM is much more than a motorcycle, it's a part of you and your style.

Thanks to our comprehensive range of parts and accessories, you can equip your KTM for on-track speed and maximum performance or simply create a style that is one of a kind.

Want to join the KTM lifestyle or looking at upgrading? Our sales team can find you your perfect bike and take care of everything, including finance. Or maybe you are due for a service, well our highly trained servicing team can help you out every step of the way.

If you have any questions about your KTM or accessories parts, please let us know!

Engine

  • Primary drive 20:64
  • Transmission 6-speed
  • Secondary gear ratio13:46
  • Starter Kickstarter
  • Stroke 48.95 mm
  • Bore 47 mm
  • Clutch Wet, multi-disc clutch, Formula hydraulics
  • Displacement 84.9 cm³
  • Design 1-cylinder, 2-stroke engine
  • Fuel-mixture generation Keihin PWK 28

Chassis

  • Weight (without fuel) 68 kg
  • Tank capacity (approx.) 5.4 l
  • Wheel base1.282 mm
  • Front brake disc diameter 240 mm
  • Rear brake disc diameter 220 mm
  • Front brake Disc brake
  • Rear brake Disc brake
  • Chain 428, Non-sealed
  • Frame design Central-tube frame with double-cradle
  • Front suspension XACT 43 WP Upside-Down fork, Ø 43 mm
  • Ground clearance 308 mm
  • Handlebar Tapered aluminum Ø 28/22 mm
  • Rear suspension XACT WP PDS mono shock
  • Seat height 845 mm
  • Silencer Aluminium
  • Steering head angle 63.5 °
  • Rear subframe design Aluminum-reinforced polyamide
  • Suspension travel (front) 278 mm
  • Suspension travel (rear) 289 mm
  • Tyre dimensions (front/rear) 70/100; 90/100
  • Wheels 1.40 x 17"; 1.60 x 14"