2025 KTM 50 SX

$4,949.00
$4,949.00
Sale Sold out
Plus Destination: $410

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2025 KTM 50 SX - SAN DIEGO’S FASTEST STARTS HERE

Designed to deliver a true race experience to the youngest motocross riders, the 2025 KTM 50 SX is where championship habits are born. Built from the ground up with the same READY TO RACE philosophy as KTM’s pro-level machines, this bike introduces young riders to performance, control, and confidence that scales with their skill.

Its high-output 49 cc 2-stroke engine is paired with a smooth, automatic centrifugal clutch, removing the need for shifting and allowing riders to focus on throttle control and line choices. The lightweight chromoly steel frame offers agility and strength, while the WP XACT 35 mm USD fork and fully adjustable rear shock provide exceptional suspension performance for smaller riders tackling real tracks.

From beginner practice sessions to youth race days around Southern California, the 2025 KTM 50 SX delivers the kind of responsive handling and build quality that ignites passion and accelerates learning. Parents and coaches alike can appreciate the adjustability, safety, and performance that make this the ultimate entry into the world of motocross racing.

UNIT SPECS

Engine

  • Transmission: Single-speed automatic
  • Starter: Kickstarter
  • Stroke: 40 mm
  • Bore: 39.5 mm
  • Clutch: Centrifugal clutch (adjustable)
  • Displacement: 49 cm³
  • EMS: Seletra 2p D36
  • Design: 1-cylinder, 2-stroke engine
  • Fuel System: Dell'Orto PHBG 19 BS

Chassis

  • Weight (without fuel): 41.5 kg
  • Tank Capacity (approx.): 2.3 l
  • Wheelbase: 1,032 mm ± 10 mm
  • Front Brake Disc Diameter: 160 mm
  • Rear Brake Disc Diameter: 160 mm
  • Front Brake: Disc brake
  • Rear Brake: Disc brake
  • Chain: 1/2 x 3/16"
  • Frame Design: Central double-cradle-type 25CrMo4 steel
  • Front Suspension: XACT 35 WP Upside-Down fork, Ø 35 mm
  • Ground Clearance: 252 mm
  • Handlebar: Tapered aluminum
  • Rear Suspension: WP XACT Monoshock
  • Seat Height: 665 mm
  • Steering Head Angle: 66°
  • Rear Subframe Design: Aluminum-reinforced polyamide
  • Suspension Travel (Front): 205 mm
  • Suspension Travel (Rear): 185 mm
  • Wheels: Front: 1.60 x 12", Rear: 1.60 x 10"

FEATURES

  • READY TO RACE PLATFORM: Developed with the same commitment as KTM's full-size motocross bikes, giving young riders a pro-level feel right from the first gate drop.
  • HIGH-OUTPUT 49 CC ENGINE: A compact and powerful 2-stroke engine provides excellent rideability and torque, tuned for performance at beginner levels and beyond.
  • AUTOMATIC CLUTCH: The centrifugal multi-disc clutch provides automatic shifting, helping riders focus on track awareness and throttle control.
  • CHROMOLY STEEL FRAME: Lightweight and durable, the frame offers ideal rigidity for both stability and responsive handling, scaled for young competitors.
  • WP XACT SUSPENSION: The front 35 mm USD forks and fully adjustable WP rear monoshock ensure controlled performance across all terrains, tailored for lighter riders.
  • SAFETY AND ERGONOMICS: Optimized seat height, handlebar position, and control layout make the 50 SX ideal for building rider confidence while maintaining control.
  • RACE-PROVEN COMPONENTS: From high-quality brakes to a lightweight subframe and premium tires, the 50 SX is equipped to withstand hard riding and grow with the rider.
  • TUNABLE PERFORMANCE: The clutch and suspension are both easily adjustable, allowing for custom setups as young racers progress in skill and strength.

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See TERMS for details. Plus government fees and taxes, any finance charges, dealer document processing charges, electronic filing fees, emission testing charges, and freight. All sale prices include applicable factory incentives. Availability may vary. Some items may not be in immediate dealer stock and may require ordering. Estimated order time ranges from 1 to 90 days. Please see terms for full details. Please call to confirm availability.