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WK SX 125
2008Super Moto

WK SX 125

Key specifications

Engine
125 cc
Torque
12 Nm
Weight
115 kg
Fuel type
petrol
Fuel capacity
2.6 L
Seat height
34 mm
Front brakes
Single disc. floating clamp to double quantity pistoncino parallel
Rear brakes
Single disc. floating clamp to single pistoncino

Overview

### Introduction to the 2008 KTM SX 125 The 2008 KTM SX 125 stands as a testament to the brand's commitment to producing high-performance motocross machines that cater to both budding riders and seasoned competitors. Positioned in the cross-motocross category, the SX 125 is specifically designed for the thrilling world of dirt racing, where every second counts and agility is key. With its lightweight frame and powerful engine, this bike is an ideal entry point for younger riders or those transitioning from smaller engines, offering a perfect blend of power and maneuverability. ### Engine Performance and Riding Characteristics At the heart of the SX 125 lies a robust 124.80cc single-cylinder, two-stroke engine, which delivers an exhilarating 12.20 Nm of torque at 8000 RPM. This configuration not only provides ample acceleration but also ensures a responsive throttle, allowing riders to navigate through tight corners and challenging terrains with ease. The liquid cooling system enhances performance by maintaining optimal engine temperatures, while the Dell'Orto carburetor ensures precise fuel delivery for a smooth riding experience. The bike’s lightweight design—just 115 kg (253.5 pounds)—coupled with its nimble handling, creates an engaging ride that is both exhilarating and confidence-inspiring, whether you're tackling a motocross track or exploring off-road trails. ### Key Features and Technology The SX 125 boasts a high-strength steel frame, designed with a double beam structure that provides both stability and agility. The front suspension features 40mm upside-down forks with an impressive travel of 260mm, while the rear utilizes a hydraulic monoshock with a travel of 270mm, ensuring excellent shock absorption and ride comfort on rough terrain. The braking system is equally advanced, with a 260mm front disc and a 220mm rear disc that deliver powerful stopping power, enhancing safety and control. Additionally, the bike features a kick starter, ensuring reliability and simplicity in starting up before hitting the dirt. With a seat height of 870mm, it offers a comfortable riding position that suits a variety of rider sizes, making it versatile for different skill levels. ###

Pros

    Cons

    • Lightweight and Agile: Weighing only 115 kg, the SX 125 is easy to handle and maneuver, ideal for both beginners and experienced riders.
    • Strong Performance: The two-stroke engine delivers quick acceleration and responsive power delivery, perfect for competitive racing scenarios.
    • Advanced Suspension System: The high-quality suspension components provide superior shock absorption, enhancing stability and comfort on rugged terrains.
    • Limited Fuel Capacity: With a fuel tank that holds just 10 liters (2.64 gallons), longer rides without refueling may be a concern.
    • Kick Start Only: The absence of an electric starter could be a drawback for some riders, particularly in tricky situations.
    • Two-Stroke Maintenance: Two-stroke engines typically require more frequent maintenance and tuning compared to their four-stroke counterparts.

    Technical details

    Source specification data

    Make
    Aprilia
    Model
    SX 125
    Category
    Cross-motocross
    Starter
    Kick
    Torque
    12.20 Nm (1.2 kgf-m or 9.0 ft.lbs) @ 8000 RPM
    Ignition
    Electronics to capacitive discharge CDI
    Fuel System
    Carburettor
    .
    Dell
    carburetor and #146;
    T
    28
    Compression
    12.5:1
    Displacement
    124.80 ccm (7.62 cubic inches)
    Cooling System
    Liquid
    Engine Details
    Single cylinder, two-stroke
    Lubrication System
    Miscelazione separated with volumetric pump and variable capacity
    Transmission Type Final Drive
    Chain
    Dry Weight
    115.0 kg (253.5 pounds)
    Seat Height
    870 mm (34.3 inches) If adjustable, lowest setting.
    Fuel Capacity
    10.00 litres (2.64 gallons)
    Overall Width
    850 mm (33.5 inches)
    Overall Height
    1,390 mm (54.7 inches)
    Overall Length
    2,165 mm (85.2 inches)
    Reserve Fuel Capacity
    1.30 litres (0.34 gallons)
    Rear Tyre
    150/60-17
    Frame Type
    Chassis in steel to high resistenziale with double beam to attice and double crib with reggisella decomposable
    Front Tyre
    110/70-17
    Rear Brakes
    Single disc. floating clamp to single pistoncino
    Front Brakes
    Single disc. floating clamp to double quantity pistoncino parallel
    Rear Suspension
    Oscillating Forcellone in steel, hydraulic monoshock-absorber with piggy-back, excursion rotates 270mm
    Front Suspension
    Teleidraulica staple to steles turned upside down from 40mm, excursion rotates 260mm
    Rear Wheel Travel
    270 mm (10.6 inches)
    Front Wheel Travel
    260 mm (10.2 inches)
    Rear Brakes Diameter
    220 mm (8.7 inches)
    Front Brakes Diameter
    260 mm (10.2 inches)