Introducing the 2024 KTM 125 SX…
All it takes is one hard, fast rip into a loamy berm to know that the 2024 KTM 125 SX is a serious contender in the 125 cc race. Not only has the ‘Ring-ting-ting’ been given a fuel-injected revival, but the entire motorcycle also benefits from class-leading developments at every end. Boasting accolades such as being the leader in 2-stroke motocross innovation in the modern era, the 2024 KTM 125 SX simply slays the rest of the 125 cc class. All you need do is prod the starter, blip the throttle and let rip.
UNMATCHED 2-STROKE PERFORMANCE
Aimed at racers looking for maximum power with the least possible weight, the 2024 KTM SX range features fuel injection, switchable engine maps, and electric start – not to mention best-in-class power-to-weight ratios and easy maintenance.
2024 KTM 125 SX Totalmotorcycle.com Key Features
THE 2024 KTM XC RANGE IS FOCUSED ON ONE GOAL – WINNING!
The KTM XC and XC-F range enters the 2024 model year with a line-up of READY TO RACE machines representing the ultimate in Cross Country excellence, complete with all-new suspension.
With almost a decade’s worth of back-to-back championships, KTM is no stranger to winning premier cross-country racing titles. For 2024, the KTM XC and XC-F range is set to continue that trend with a line-up of precision machines built to deliver trophies.
At the top of the range, the KTM 450 XC-F dominates the 4-stroke stable, with the equally impressive KTM 350 XC-F and KTM 250 XC-F rounding off the line-up. These are flanked by three 2-stroke models, namely the KTM 125 XC, KTM 250 XC, and the new open-class contender, the KTM 300 XC.
All 2024 XC and XC-F models benefit from Electronic Fuel Injection, along with a map select switch as standard, while the 4-stroke XC-F range gets additional Traction Control, Launch Control, and Quickshifter features.
The biggest improvement to the 2024 KTM XC and XC-F range comes by way of the suspension.
Upfront, an all-new WP XACT Closed Cartridge fork provides faster and more consistent damping characteristics, thanks to a new mid-valve piston concept that optimizes the oil flow within the cartridge. This setup avoids unwanted foaming of oil which can lead to an unwanted change of damping characteristics and less consistent damping behavior.
This is further improved with a new hydro stop in the last 68 mm of the stroke which aids in maintaining maximum reserves in extreme riding situations. Revised fork protection rings also provide increased protection against dirt intrusion for improved reliability. The new WP XACT Closed Cartridge fork retains its 48 mm of diameter, while the total length is now 940 mm, and the total stroke has now 300mm travel.
On the rear, the WP XACT rear shock provides advanced damping characteristics for unsurpassed traction and energy absorption. It also features less overall length and less weight compared to the previous generation while keeping the suspension travel unchanged with 300 mm.
From an adjustability standpoint, both ends feature easy-to-use hand clickers that allow riders to change settings on the fly without needing any special tools.
The 2024 KTM cross-country range of motorcycles is a confidence-inspiring line-up catering to riders at any level. With dramatically improved handling characteristics, easy suspension adjustment, and the very latest in dirt bike technology, the 2024 KTM XC and XC-F range sets the standard when it comes to competitive cross-country racing.
The all-new 2024 KTM XC and XC-F range will be available at authorized KTM dealers from April 2023 onwards.
2024 KTM 125 SX Totalmotorcycle.com Features and Benefits
Before The Gate
CLICK INTO ACTION
Easy Suspension Adjustment
Get dialed in! The 2024 KTM SX range boasts totally tool-free suspension setup at both ends. Thanks to the shock absorber design featuring hand-adjustable dual compression control, it allows riders to adjust high- and low-speed settings in a matter of seconds. On the front end, the forks are also easily adjusted thanks to a single air pressure preload valve, as well as through easy access click adjusters for compression and rebound. We’ll even throw the air pump in as standard.
NO JETS – ONLY ROCKET SHIPS
Electronic Fuel Injection
Pre-mix gets a remix across the 2-stroke KTM SX range, with electronic fuel injection setting the standard. Now there’s no more fiddly jetting setup pre-race, And thanks to the Keihin EFI and reed valve case design, you can be guaranteed of laying down optimal power at any altitude, all of the time.
CHUGGA CHUGGA, RING DING DING!
Picture this; You’re 7 laps into an absolute ripper of a race. You miss your line and end up stalling in a deep rut. But you don’t sweat it. All you do is press the starter button and you blast off again to take the final flag. This is the reality on the 2024 KTM 125 SX. Thanks to a 12,8V 2 Ah lithium ion battery is placed under the rider’s seat, a high-quality stator & pickup and super robust design, the only thing you’ll be kicking – is ass.
SMOOTHER POWER DELIVERY
EFI + Power Valve
With EFI comes great rideability. Along with the electronic fuel injection, a Power Valve has also been fitted to the KTM 125 SX, allowing for more usable power throughout the rev range. Smoother power means better traction. Better traction means holeshot heaven!
The KTM 125 SX has always represented the very best of unsurpassed power and lightweight construction. The simplicity and low maintenance cost of the 2-stroke motor have made it a favorite amongst motocross riders for generations. For 2024, The KTM 125 SX enters with n overall engine weight of only 17,86 kg, setting the 125 SX engine sets the benchmark in the highly competitive 250 cc class.
PICK YOUR POWER
The 2024 KTM 125 SX features a map select switch allowing the racer to switch between 2 engine maps. Map 1 provides a linear, predictable power delivery, while Map 2 gives it the full beans with crisp, explosive power output.
Calm Under Fire
SLEEKER FOR YOU TO SCRUB CLEANER
No matter how gnarly the track is, you’ll stay in complete control thanks to the frame design that has not only been engineered for longitudinal rigidity but also repositions rotating mass closer to the center of gravity. The shock mounting also provides improved anti-squat behavior to better traction out of corners, while the footpeg mounting position has moved inwards for less risk of hooking up in deep ruts or when scrubbing jumps.
FLUID RIDER MOTION
The 2024 KTM SX and SX-F range feature a rider triangle, providing improved knee contact – especially when standing on the pegs – with improved gripping surfaces all around. The plastics work to expel mud buildup in wet, muddy conditions, with a flatter seat profile and high grip seat cover providing exceptional rider movement and control. The polyamide reinforced aluminum subframe further enhances rider feel and feedback.
With a major emphasis placed on mass centralization, the 2024 KTM 125 SX engine is designed to centralize rotating mass for optimal operation with the chassis. This results in a lighter, more agile handling feel that simply runs rings around the competition.
Hit The Big Stuff
GRIP AND LET RIP
Ready to rip your arms out of the sockets? Together with the benefits of mass centralization and overall reduced weight, the anti-squat behavior of the chassis is significantly improved by changing the backbone of the steel frame concept. In layman’s terms, the 2024 KTM 125 SX gets its power down perfectly when tearing out of corners.
UNFLAPPABLE FRONT END
WP XACT Fork
RACING ON RAILS
The 2024 KTM 125 SX is rock-solid at any speed thanks to a repositioned and forged steering head connection and CNC milled triple clamps. Made from high-grade aluminum, these feature optimally tuned steering stem stiffness, perfect alignment of the fork tubes, and precise geometry of the fork clamps to ensure highly responsive and smooth fork action – not to mention unwavering stability when charging across ruts and onto the podium.
Besides the expertly crafted, hydro-formed, laser-cut, and robot-welded frame being engineered to provide exceptional rider feedback and straight-line stability, it consists of specifically calculated parameters of longitudinal and torsional flex. This means the frame acts as a “shock absorber” of sorts, making for a less harsh ride, resulting in less rider fatigue over many hard laps.
NOTHING TO HOLD YOU BACK
No one enjoys a bad hook-up. Luckily, the frame and shock absorber geometry on the 2024 KTM 125 SX improve ground clearance of the linkage, with topology optimized die-cast footpegs that are less susceptible to hooking on deep ruts, and take-offs when scrubbing.
PRECISE, LAP AFTER LAP
A WP XACT shock absorber provides unmatched consistency lap after lap, thanks to low-friction SKF linkage seals and advanced damping characteristics for unsurpassed traction and energy absorption.
2024 KTM 125 SX – Totalmotorcycle.com International Specifications/Technical Details
US MSRP Price: $ See Dealer for Pricing USD
Canada MSRP Price: $ See Dealer for Pricing CDN
Europe/UK MSRP Price: £ See Dealer for Pricing (On The Road inc 20% Vat)
Starter Electric starter
Clutch Wet multi-disc DS clutch, Brembo hydraulics
EMS Vitesco Technologies EMS
Design 1-cylinder, 2-stroke engine
Weight (without fuel) 92.4kg
Tank capacity (approx.) 7.2l
Front brake disc diameter 260mm
Rear brake disc diameter 220mm
Front brake Disc brake
Rear brake Disc brake
Chain 520, Non-sealed
Frame design Central double-cradle-type 25CrMo4 steel
Front suspension WP XACT-USD, Ø 48 mm
Ground clearance 359mm
Rear suspension WP XACT Monoshock with linkage
Steering head angle 63.9°
Suspension travel (front) 310mm
Suspension travel (rear) 300mm
Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).