MotoSport Hillsboro (503) 648-4555
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2025 KTM 85 SX

Price excludes $215 doc fee, OEM freight, dealer setup and government fees. Sale prices include all applicable offers.

The 2025 KTM 85 SX 17/14 is a big step forward for young racers moving up toward full-size bikes. KTM redesigned it for 2025 to work like a smaller version of its full-size SX motocross bikes. It was tested on tracks in Europe, North America and Australia, and it handles better, delivers power more smoothly and holds its pace better over long races.

  • Updated 84.9 cc two-stroke: A new combustion chamber and smaller spark plug, a new ignition, a new exhaust and revised carburetor settings add low- and mid-range power and torque.
  • Smoother shifting: The 6-speed gearbox has a newly coated shift drum, and the clutch is a hydraulic Formula wet multi-disc unit.
  • New chassis: A new chromoly steel frame with a 26.5° steering head comes with a new aluminum-reinforced polyamide subframe and a new swingarm.
  • Adjustable WP XACT suspension: The 43 mm AER air fork is set with a pump, and the PDS shock adjusts for preload, compression and rebound.
  • Strong brakes: Hydraulic discs, 240 mm front and 220 mm rear.
  • Sized for younger riders: 17-inch front and 14-inch rear wheels on Maxxis MaxxCross MX-ST tires, with an 845 mm (33.3 in) seat height.
  • Styled like the big bikes: Slimmer new bodywork, a new fuel tank, Pankl radiators and a new airbox for better airflow.
  • Sale Price$6,749
  • LocationMotosport
  • ConditionNew
  • Stock Number098007
  • Year2025
  • MakeKTM
  • Model85 SX
  • TypeMotorcycle
  • CategoryYouth
  • VINVBKMRC234SM098007
  • ColorOrange
  • EngineLiquid-cooled single-cylinder 2-stroke
  • Engine Size84.9 cc
  • Fuel TypeGas/Oil Mix
  • Transmission6-speed
  • StatusIn Stock
Engine
Design1-cylinder, 2-stroke engine
Displacement84.9 cc
Bore x Stroke47 mm x 48.95 mm
CoolingLiquid
Fuel systemKeihin PWK 28 carburetor
StarterKickstarter
Drivetrain
Transmission6-speed
Primary drive20:64
Secondary ratio13:46
ClutchWet, multi-disc clutch, Formula hydraulics
Chain428, non-sealed
Chassis
FrameCentral-tube frame with double-cradle, chromoly steel
SubframeAluminum-reinforced polyamide
Steering head angle63.5° (26.5° rake)
Suspension
Front suspensionWP XACT AER 43 mm upside-down air fork
Rear suspensionWP XACT PDS monoshock, preload/compression/rebound adjustable
Travel front / rear278 mm (10.9 in) / 289 mm (11.4 in)
Brakes
Front brakeHydraulic disc, 240 mm
Rear brakeHydraulic disc, 220 mm
Wheels
Front tireMaxxis MaxxCross MX-ST 70/100-17 (1.40 in rim)
Rear tireMaxxis MaxxCross MX-ST 90/100-14 (1.60 in rim)
Dimensions
Seat height845 mm (33.3 in)
Wheelbase1,282 mm (50.5 in)
Ground clearance308 mm (12.1 in)
Capacities
Fuel capacity5.4 L (1.4 gal)
Weight
Weight (without fuel)68 kg (149.9 lb)

Stock/unit photos are AI generated. They are a best estimation of the final product, but accuracy is not guaranteed. Advertised pricing excludes applicable taxes, title, licensing, dealer set up, destination, reconditioning and are subject to change without notice.

Specifications, features, equipment, colors and other vehicle details on this page are compiled from manufacturer and third-party sources and are reviewed and supplemented with the help of artificial intelligence (AI) tools. While we work to keep this information accurate, it may contain errors or omissions, and manufacturers may change specifications without notice. All information is provided "as is" for general reference only; it is not a warranty or representation of any kind and does not form part of any offer or sales agreement. Please confirm any details that matter to your purchase, including specifications, equipment, price and availability, with our sales staff before buying. To the fullest extent permitted by law, we are not responsible for errors or omissions in this information or for any reliance on it.

*Pre-approval is not a guarantee of financing. All financing is subject to credit approval by the lender, and approval, rates, terms and down payment are based on your credit history, income and other factors. Not all applicants will qualify. Estimated payments are for illustration only and do not include taxes, title or other fees.

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2025 KTM 85 SX

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