KICKSTART YOUR RACING CAREER

The KTM 125 SX is the most compact and lightweight of the full-size bikes and delivers a confidence-inspiring ride like no other. A lightweight chassis teams up with the most competitive 125cc 2-stroke engine in its class, delivering superior agility and power to fulfil the demands of any young adrenaline seeker. This 2-stroke screamer is the ultimate entry point into the pro ranks and a sure-fire way to add to the trophy collection.

 

ENGINE & EXHAUST

KTM 2-strokes have been tearing up MX tracks for decades and are undoubtedly the fastest on the track today. Thanks to years of ongoing development, these engines are the benchmark in performance and technology, with the perfect combination of power, weight and control. For 2020, small, but important refinements have been made, resulting in improved power delivery and reliability and through its melodic high-RPM screams, KTM125 SX continues to deliver thrilling high-performance harmonics.

 

CYLINDER

At the heart of the 125cc engine is a cylinder with a 54 mm bore. It features an improved power valve unit with a sophisticated mechanism designed for the lateral support exhaust ports. The exhaust port layout increases engine performance, while the upper contour of the exhaust port has been machined to ensure more accurate port timing. The two component cylinder head works in complete harmony with the cylinder to deliver outstanding performance across the entire rev range.

 

TRANSMISSION

The KTM 125 SX is fitted with a robust 6-speed transmission. The gear ratios, which featured improvements and reinforcements, were carried over from the predecessor. The gearbox features a new drive shaft which uses a screw for pinion fixation and diaphragm spring instead of a circlip, ensuring safer pinion fixation. Another highlight of the 125 SX transmission is the no-dirt gear shifter. Similar to the footpeg design, it prevents the build-up of dirt and ensures the next gear is always available, no matter what the conditions.

 

CHASSIS

To cater for the highly energized riding style of a 125cc 2-stroke rider, KTM developed a chassis that delivers on their demanding expectations. The lightweight, high-tech steel frame is designed to respond instantly to rider input and provide accurate rider feedback. The flex characteristics help the bike to soak up those big hits while also delivering excellent agility and high-speed stability. For 2020, the suspension features improved damping characteristics. The reworked settings offer a slightly softer, more comfortable feel that, together with the frame, allows the rider to be 100% in charge of the ride.

 

SWINGARM

The one-piece swingarm, is manufactured using a gravity die-cast production process, for exceptional strength at the lowest possible weight. It offers a wide range of adjustment for the rear wheel, allowing for a shorter wheelbase on tighter, twisty tracks, or a longer wheelbase for greater stability on longer, more choppy tracks. The swingarm's chain measurement markings are visible from above, making adjustment simpler and more accurate.

 

FRONT SUSPENSION

All full-size KTM SX models are fitted with the super-lightweight WP XACT fork with AER technology. It is a 48 mm USD air-sprung fork with separate functions in each fork leg, with damping functions on the right side and the air spring on the left. The left leg features a two-chamber system with a capsuled air cartridge, helping prevent loss of air pressure. Essentially, this means that in the rare case of a leaking outer seal, the internal cartridge pressure keeps the bike in a normal position. The air spring is exceptionally easy to use and can be adjusted to any rider weight via a single air valve and the air pump that is supplied with the bike. The right fork leg integrates a damping cartridge to fit single damping leg requirements and can be adjusted to the track conditions and the rider's preferences. Additionally, the fork top caps have a new design for improved, easy adjustment (compression from top, rebound from bottom, 30 clicks each).

 

REAR SUSPENSION

All KTM SX models feature a WP XACT monoshock, which has been developed to work as a complete unit with the entire frame and swingarm architecture, as well as the linkage system and the WP XACT fork. It features high-quality machined and anodized components, which add a touch of class and give it appeal beyond just a functional necessity. It is fully adjustable, including high and low speed compression, allowing you to set the shock up precisely to suit any track and rider's preferences.

 

TRIPLE CLAMP

All KTM SX models feature top quality, CNC-machined triple clamps which have become a KTM trademark. The triple clamp has a precisely calculated stiffness and offset (22 mm offset for all models) to match the flex characteristics of the frame and fork. The result is a front end that all works in perfect harmony, contributing positively to the overall handling and stability. The rubber damped handlebar fixation reduces vibration and also allows for some adjustment with two different mounting positions. An hour meter is fitted as standard on the upper triple clamp on all SX models, keeping the rider informed of the number of hours spent tearing up the track and when the next service is due.

 

ERGONOMICS & COMFORT

Momentum is crucial when laying down fast laps on a 125cc. The ability to shift your weight quickly and easily to move in harmony with the motorcycle is key to maximizing flow. KTM focused extensively on the optimal ergonomics for high-level performance, ensuring a riding position that offers the best control and, with the option of several handlebar positions, can be adjusted to suit every rider and condition. The way a rider interacts with the bodywork, seat, footpegs and handlebars achieves balance and control. For this reason, no compromises were made in these important areas and only the best quality products and designs were used. Sitting on the 2020 KTM 125 SX gives the rider a definite sense of control and this is immediately confirmed the moment he hits the track.

BODYWORK & GRAPHICS

125 cc riders are renowned for riding with the most aggressive body language. Young, determined athletes riding with exaggerated style, pushing themselves and their machines to the limit. This was a critical consideration when developing the bodywork of the KTM 125 SX and was factored into the entire SX range. By using input from KTM factory riders, KTM R&D as well as Kiska Design, the bodywork of the KTM 125 SX achieves complete harmony between rider and bike. The main goal was to provide the perfect contact points for the rider, allowing him to move as freely as his spirit demands, with the control to match his intentions. The bodywork is full of intelligent design elements, like the I-beam structure on the front and rear fenders, which guarantee maximum stability with the lowest possible weight.

 

125 SX 2020

$10,995.00Price
  • Delivery and RideAway pricing.

    Motorbikes can be delivered within a 150km radius of the shop. Please note we can not ship bikes. Proof of identity will be required on purchase.

    Rideaway pricing.

    This price is the rideaway price for this motorcycle if the motorcycle is to be registered in NSW. For pricing outside of NSW please call us on 0243248916

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(02) 4324 8916     

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A:

Unit 5 / 6 Bowen Crescent, West Gosford NSW 2250