
KTM 50 SX
Key specifications
Overview
Introducing the 2012 KTM 50 SX, a spirited minibike that stands out in the competitive youth motocross arena. Designed specifically for young riders looking to hone their skills on the track, the 50 SX is not just a bike; it’s a gateway to the world of racing. With a lightweight frame and cutting-edge suspension, this bike is built to inspire confidence while delivering thrilling performance. KTM has long been recognized for its dedication to quality and innovation, and the 50 SX is no exception, perfectly blending aggressive styling with functionality to cater to aspiring motocross champions. At the heart of the KTM 50 SX lies a robust 49cc, single-cylinder, two-stroke engine, which delivers a punchy power band that is both exhilarating and manageable for younger riders. With a bore and stroke of 39.5 x 40.0 mm, this little powerhouse is designed to provide a responsive experience, while the automatic gearbox and centrifugal clutch ensure smooth acceleration without overwhelming novice riders. The liquid cooling system helps maintain optimal engine performance, even during those intense track sessions, allowing riders to focus on mastering their techniques rather than worrying about overheating. The result is a bike that is not only fun to ride but also encourages skill development and confidence on two wheels. The 2012 KTM 50 SX is packed with features that enhance both performance and comfort. Its central tube frame, constructed from chrome molybdenum steel and powder-coated for durability, provides excellent stability and strength while remaining lightweight at just 41.5 kg (91.5 pounds). The WP Suspension system, featuring a USD 35 front fork and a 3614 BAEM rear shock, ensures exceptional handling and responsiveness over rough terrain, with 205 mm of front travel and 185 mm of rear travel to absorb bumps and jumps effortlessly. Safety is also a priority with a powerful braking system: a 160 mm front disc paired with a four-pot caliper and a 140 mm rear disc with a two-pot caliper that work in harmony to provide reliable stopping power. **
Pros
- Lightweight Design: At only 41.5 kg, the bike is easily maneuverable, making it ideal for younger riders.
- User-Friendly Power Delivery: The automatic gearbox and centrifugal clutch make it easier for novice riders to learn without the complexity of manual shifting.
- Exceptional Suspension: The WP Suspension system provides excellent handling and comfort, allowing for smooth rides over rough terrains.
Cons
- Limited Fuel Capacity: With only 2.30 liters (0.61 gallons), fuel range may be restrictive during longer practice sessions.
- Kick Start Only: The lack of an electric start may pose a challenge for younger riders, especially in challenging conditions.
- Small Engine Size: While perfect for beginner riders, the 49cc engine may not satisfy those looking for more power as they advance in skill.
Technical details
Source specification data
- Make
- KTM
- Model
- 50 SX
- Category
- Minibike-cross
- Starter
- Kick
- Color Options
- Orange, black, white
- Clutch
- 3-lining automatic clutch on the main shaft / centrifugal force
- Gearbox
- Automatic
- Ignition
- Seletra 2p D36
- Driveline
- Primary
- drive: 61:33.
- Rigid
- 1-stage reduction gear.
- Engine Type
- Reed intake
- Fuel System
- Carburettor. DELL´ORTO PHBG 19 BS
- Bore X Stroke
- 39.5 x 40.0 mm (1.6 x 1.6 inches)
- Displacement
- 49.00 ccm (2.99 cubic inches)
- Cooling System
- Liquid
- Engine Details
- Single cylinder, two-stroke
- Exhaust System
- Aluminium
- Lubrication System
- Mixture oil lubrication 1:60
- Transmission Type Final Drive
- Chain
- Dry Weight
- 41.5 kg (91.5 pounds)
- Seat Height
- 684 mm (26.9 inches) If adjustable, lowest setting.
- Fuel Capacity
- 2.30 litres (0.61 gallons)
- Ground Clearance
- 252 mm (9.9 inches)
- Rake
- 24.0°
- Wheels
- 1.5 x 12in., 1.6 x 10in. Alu
- Rear Tyre
- 2.75-10
- Frame Type
- Central tube frame of chrome molybdenum steel tubing, powder-coated
- Front Tyre
- 60/100-12
- Rear Brakes
- Single disc. Two-pot brake caliper
- Front Brakes
- Single disc. Four-pot brake caliper
- Rear Suspension
- WP Suspension 3614 BAEM
- Front Suspension
- WP Suspension USD 35
- Rear Wheel Travel
- 185 mm (7.3 inches)
- Front Wheel Travel
- 205 mm (8.1 inches)
- Rear Brakes Diameter
- 140 mm (5.5 inches)
- Front Brakes Diameter
- 160 mm (6.3 inches)