The 2025 KTM 85 SX is a powerful and agile motocross bike designed for young riders stepping up their game. Here are some key specifications:

  • Engine: 85cc, single-cylinder, 2-stroke
  • Bore x Stroke: 47 mm x 48.95 mm
  • Fuel System: Keihin PWK 28 carburetor
  • Ignition: Digital with CDI box from Hidria
  • Transmission: 6-speed, wet multi-disc clutch
  • Suspension:
    • Front: WP XACT AER fork, 43 mm diameter, 278 mm (10.9") travel
    • Rear: WP XACT PDS mono shock, adjustable for preload, compression, and rebound, 289 mm (11.4") travel
  • Brakes:
    • Front: Hydraulic disc, 240 mm rotor
    • Rear: Hydraulic disc, 220 mm rotor
  • Tires:
    • Front: Maxxis MaxxCross MX-ST, 70/100 x 19"
    • Rear: Maxxis MaxxCross MX-ST, 90/100 x 16"
  • Seat Height: 871 mm (34.3")
  • Wheelbase: 1282 mm (50.5")
  • Ground Clearance: 333 mm (13.1")
  • Fuel Capacity: 5.4 liters (1.4 gallons)
  • Weight: 69 kg (152.1 lbs) without fuel.

This bike features a redesigned combustion chamber for more efficient combustion, adjustable WP XACT suspension, and a new digital ignition system for smoother engine operation


. It's built to provide young riders with exceptional handling and performance on the track.

Check out a little video of this bike in action:

https://youtu.be/Xn3KglTeAv0