KTM 105 SX
2004Minibike

KTM 105 SX

Key specifications

Engine
85 cc
Weight
68 kg
Fuel type
petrol
Fuel capacity
1.3 L
Transmission
6-speed
Seat height
35 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2004 KTM 105 SX, a miniature powerhouse that exemplifies KTM’s dedication to performance and innovation in the minibike-sport category. Released as a competitive offering for young riders and transitioning enthusiasts, the 105 SX is designed to provide a thrilling experience on the track and off-road trails alike. This model is especially notable as it was exclusively sold in the U.S., making it a unique gem for those looking to introduce their budding motocross stars to the exhilarating world of two-stroke dirt bikes. At the heart of the 105 SX lies an impressive single-cylinder, two-stroke engine with a displacement of 84.93 ccm (5.18 cubic inches). Its compact dimensions, with a bore and stroke of 47.0 x 49.0 mm, allow for quick revving and a responsive throttle. Paired with a six-speed gearbox, the engine delivers a punchy performance that is both exhilarating and manageable for younger riders. The liquid cooling system ensures optimal performance even during rigorous rides, while the carburettor fuel system enhances throttle response, making every twist of the wrist a thrilling experience. With a lightweight of just 68 kg (149.9 lbs), the 105 SX offers agile handling and remarkable maneuverability, perfect for those tight turns and jumps on the track. The 2004 KTM 105 SX is built on a robust chromium molybdenum central-type frame that provides exceptional strength and rigidity, ensuring stability under high-speed conditions. The WP USD 43 front suspension and WP PDS monoshock rear suspension work harmoniously to absorb the bumps, offering a plush ride that enhances rider confidence. With impressive front and rear disc brakes, each measuring 216 mm (8.5 inches), stopping power is both reliable and responsive, crucial for a minibike designed for spirited riding. The bike's ground clearance of 430 mm (16.9 inches) and an adjustable seat height of 900 mm (35.4 inches) allow for versatility, accommodating a range of rider sizes and preferences. **

Pros

  • Lightweight Design: At just 68 kg, the 105 SX offers incredible agility and maneuverability, making it perfect for young and novice riders.
  • Responsive Engine: The two-stroke engine provides quick throttle response and exhilarating acceleration, enhancing the riding experience.
  • Superior Suspension: The combination of WP USD front forks and PDS rear monoshock ensures excellent handling and comfort over rough terrain.

Cons

  • Limited Fuel Capacity: With a fuel capacity of only 5.00 liters (1.32 gallons), frequent refueling may be necessary during longer rides.
  • Two-Stroke Maintenance: The two-stroke engine requires more frequent maintenance and attention compared to four-stroke counterparts.
  • Height Considerations: The seat height may be a challenge for shorter riders, potentially affecting confidence and control during rides.

Technical details

Source specification data

Make
KTM
Model
105 SX
Category
Minibike-sport
Comments
Sold in the US only.
Gearbox
6-speed
Fuel System
Carburettor
Bore X Stroke
47.0 x 49.0 mm (1.9 x 1.9 inches)
Displacement
84.93 ccm (5.18 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, two-stroke
Transmission Type Final Drive
Chain
Dry Weight
68.0 kg (149.9 pounds)
Seat Height
900 mm (35.4 inches) If adjustable, lowest setting.
Fuel Capacity
5.00 litres (1.32 gallons)
Ground Clearance
430 mm (16.9 inches)
Alternate Seat Height
675 mm (26.6 inches) If adjustable, highest setting.
Rake
24.0°
Frame Type
Chromium molybdenum central-type frame
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
WP PDS monoshock
Front Suspension
WP USD 43
Rear Brakes Diameter
216 mm (8.5 inches)
Front Brakes Diameter
216 mm (8.5 inches)