Back to Bike FinderYears: 2024 · 2023 · 2022 · 2021
KTM 50 SX Factory
2021Minibike

KTM 50 SX Factory

$5,199

Key specifications

Engine
50 cc
Weight
42 kg
Fuel type
petrol
Fuel capacity
0.6 L
Transmission
Automatic
Seat height
26 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2021 KTM 50 SX Factory, the ultimate minibike designed for young racers eager to embrace the thrill of motocross. With an MSRP of $5,199, this machine stands out in the competitive entry-level segment, offering a perfect blend of performance, maneuverability, and cutting-edge technology. With its striking color palette of white, orange, blue, and red, the 50 SX Factory not only performs like a champion but also looks the part, making it a favorite among budding motocross stars and their supporters alike. At the heart of the KTM 50 SX Factory lies a robust 49.8cc single-cylinder, two-stroke engine that delivers exhilarating performance while being manageable for novice riders. The engine's bore and stroke of 39.5 x 40.0 mm ensures a responsive power delivery that is ideal for quick acceleration on the track. Equipped with a Seletra 2p D36 EMS ignition system, the 50 SX Factory maximizes efficiency and power output, while the automatic gearbox and centrifugal clutch ensure hassle-free shifting, allowing young riders to focus on honing their skills without the worry of manual clutch operation. With its lightweight frame weighing just 41.5 kg (91.5 pounds) and a ground clearance of 252 mm (9.9 inches), this bike is engineered for agility and stability, making it perfect for navigating tight corners and jumps. When it comes to features, the 2021 KTM 50 SX Factory is loaded with race-ready technology. The central-tube frame with double-cradle design provides exceptional rigidity and control, complemented by the XACT WP suspension system, featuring a 35mm upside-down fork at the front and a mono-shock at the rear. Together, they offer impressive travel—205 mm (8.1 inches) in the front and 185 mm (7.3 inches) in the rear—ensuring that young riders can tackle rough terrain with confidence. The single disc brakes at both the front and rear offer reliable stopping power, crucial for safe riding. With a seat height of 665 mm (26.2 inches) adjustable for growing riders, the 50 SX Factory is designed to accommodate the needs of young enthusiasts as they progress in their motocross journey. **

Pros

  • Lightweight design enhances maneuverability, making it easy for young riders to handle.
  • Powerful and responsive two-stroke engine delivers excellent acceleration and performance on the track.
  • Advanced suspension and braking systems provide superior control and safety.

Cons

  • Limited fuel capacity (2.30 liters or 0.61 gallons) may necessitate more frequent refueling during extended rides.
  • The single-cylinder engine may not fully satisfy older or more experienced riders looking for more power.
  • As a specialized minibike, it may not be as versatile for general riding compared to other models.

Technical details

Source specification data

Make
KTM
Model
50 SX Factory
Price
S
$ 5199.
P
depends on country, taxes, accessories, etc.
Category
Minibike-cross
Starter
Kick
Color Options
White/Orange/Blue/Red
Clutch
Centrifugal
Gearbox
Automatic
Ignition
Seletra 2p D36 EMS
Bore X Stroke
39.5 x 40.0 mm (1.6 x 1.6 inches)
Displacement
49.8 ccm (3.04 cubic inches)
Engine Details
Single cylinder, two-stroke
Exhaust System
FMF silencer
Transmission Type Final Drive
Chain
Dry Weight
41.5 kg (91.5 pounds)
Seat Height
665 mm (26.2 inches) If adjustable, lowest setting.
Fuel Capacity
2.30 litres (0.61 gallons)
Ground Clearance
252 mm (9.9 inches)
Rake
24.0°
Wheels
Dunlop Geomax MX 53 tires
Frame Type
Central-tube frame with double-cradle
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
XACT WP mono shock
Front Suspension
XACT 35 WP Upside-Down fork, Ø 35 mm
Rear Wheel Travel
185 mm (7.3 inches)
Front Wheel Travel
205 mm (8.1 inches)

Available colors

White/Orange/Blue/Red