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KTM SX 125No rating yet. 26 KTM SX 125 model variants. |
2025 KTM SX 125. Picture credits - KTM
| KTM SX 125 model overview |
| KTM SX 125 models include the 26 motorcycles below produced from 1999 to 2025. The 2025 KTM 125 SX motorcycle is used as an example on this page. It has a 125 ccm single cylinder engine. The category is enduro / offroad. |
| Engine and transmission | |
|---|---|
| Displacement | 124.8 ccm (7.62 cubic inches) |
| Power | 15.0 HP (10.9 kW) |
| Gearbox | 6-speed |
| Clutch | Wet multi-disc DS clutch, Brembo hydraulics |
| Exhaust system | Aluminum |
| Frame, dampers, brakes and wheels | |
| Frame | Central double-cradle-type 25CrMo4 steel. Aluminum-reinforced polyamide subframe. |
| Front dampers | WP XACT-USD, Ø 48 mm |
| Rear dampers | WP XACT Monoshock with linkage |
| Front tire | 1.6-21 |
| Rear tire | 2.15-19 |
| Front brakes | Single disc |
| Diameter | 260 mm (10.2 inches) |
| Rear brakes | Single disc |
| Diameter | 220 mm (8.7 inches) |
| Wheels | Spoked wheels with aluminium rims |
| Weight and dimentions | |
| Dry weight | 92.4 kg (203.7 pounds) |
| Saddle height | 958 mm (37.7 inches) If adjustable, lowest setting. |
| Wheelbase | 1493 mm (58.8 inches) |
| Ground clearance | 359 mm (14.1 inches) |
| Fuel tank | 7.2 litres (1.90 US gallons) |
| Other information | |
| Maintenance | Find KTM SX 125 parts, fluids and service manuals. |
| Insurance costs | Easy comparison of quotes from US top insurance providers. |
The KTM SX 125 model variants with detailed specs:
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2025 KTM 125 SX Colors: Orange/black/grey Power: 15.00 HP Dry weight: 92.40 kg Manufacturers profilation: There are very few sounds that can´t be beaten. The crack of a soda can on a blistering hot day. The ping of the perfectly executed golf shot. And the scream of a 125 cc 2-stroke charging down a long straightaway. The 2025 KTM 125 SX takes its leads directly from the Factory Racing team and puts them to work like nothing else. Specs and pictures Detailed rating Add a comment Add your rating | |
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2024 KTM 125 SX Colors: White/orange/grey/purple Power: 15.00 HP Dry weight: 92.40 kg Manufacturers profilation: 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. Specs and pictures Detailed rating Add a comment Add your rating | |
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2023 KTM 125 SX Colors: White/orange/grey Price as new: 7949 USD Power: 15.00 HP Dry weight: 92.40 kg Manufacturers profilation: All it takes is one hard, fast rip into a loamy berm to know that the 2023 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. Specs and pictures Detailed rating Add a comment Add your rating | |
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2022 KTM 125 SX Colors: White/orange/blue Price as new: 7499 USD Power: 15.00 HP Dry weight: 87.50 kg Manufacturers profilation: The KTM 125 SX is the most compact and lightweight of the full-sized KTM motocross arsenal, delivering championship-winning performance to up-and-coming racers. Due to its confidence-inspiring performance, lightweight chassis and overall agility, the KTM 125 SX has become the most competitive 125 cc 2-Stroke engine in its class. For 2022, This 2-Stroke screamer is the ultimate entry point into the pro ranks and a sure-fire way to add to the trophy collection. Specs and pictures Detailed rating Add a comment Add your rating | |
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2021 KTM 50 SX Colors: White/Orange Price as new: 4399 USD Engine: 124.80 ccm Dry weight: 41.50 kg Manufacturers profilation: The KTM 50 SX is a true KTM for young MX riders aged between 4 and 10 years old. It is a genuine dirt bike that, like its bigger siblings, is produced with top-quality components. This makes the KTM 50 SX the first choice when stepping into the world of MX. Specs and pictures Detailed rating Add a comment Add your rating | |
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2021 KTM 125 SX Colors: White/Orange Price as new: 7399 USD Power: 15.00 HP Dry weight: 87.50 kg Manufacturers profilation: A lightweight chassis teams up with the most competitive 125 cc 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. Specs and pictures Detailed rating Add a comment Add your rating | |
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2021 KTM 50 SX Factory Colors: White/Orange/Blue/Red Price as new: 5199 USD Engine: 124.80 ccm Dry weight: 41.50 kg Manufacturers profilation: KTM´s Factory Editions are the result of years of developing Factory Race machines for some of the fastest riders on the planet competing on some of its most challenging terrain. Junior riders and racers that climb on the KTM 50 SX Factory Edition can do so in the knowledge that they are experiencing class-leading performance with state-of-the-art WP Suspension, high-end brakes and minimal weight. Specs and pictures Detailed rating Add a comment Add your rating | |
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2020 KTM 125 SX Colors: White, Orange Power: 15.00 HP Dry weight: 137.00 kg Manufacturers profilation: The KTM 125 SX is the most compact and lightweight of the full-size bikes and delivers a confidence-inspiring ride like no other Specs and pictures Detailed rating Add a comment Add your rating | |
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2019 KTM 125 SX Colors: Orange/white/black Price as new: 7790 EUR Engine: 124.80 ccm Dry weight: 87.50 kg Manufacturers profilation: Absolute performance purity is the name of the game when it comes to electronics and the new KTM 125 SX. Undiluted 2-stroke simplicity, with an hour meter to keep a check on how long you´ve been shredding and an optional rev counter to assist with perfect setup. Specs and pictures Detailed rating Add a comment Add your rating | |
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2018 KTM 125 SX Colors: Orange/white/black Engine: 124.80 ccm Dry weight: 87.20 kg Manufacturers profilation: The latest KTM 125 SX engine is the most powerful and most competitive engine in its class; a clear statement that KTM is keen on keeping 2-stroke technology at the forefront of development. The secret to their success is an outstanding power-to-weight ratio, low costs and simplicity. Specs and pictures Detailed rating Add a comment Add your rating | |
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2017 KTM 125 SX Colors: Orange/white/black Engine: 124.80 ccm Dry weight: 87.20 kg Manufacturers profilation: The whip cracking KTM 125 SX has been buzzing at the front for years. If it is up to us, it stays there for many more seasons to come. A compact build and the lowest weight out there team up for the win with a glorious 2-stroke engine, fitted in a state-of-the-art chassis. Get shredding, youngsters. Specs and pictures Detailed rating Add a comment Add your rating | |
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2016 KTM 125 SX Colors: Orange/white/black Engine: 124.80 ccm Dry weight: 87.80 kg Manufacturers profilation: The high performing and well-proven KTM 125 SX has been on the market at the front of the field for years. For MY 2016 this bike is even better. Powered by lighter and all-new high performance 2-stroke engine, with a power valve and 6-speed gearbox fitted in a new state-of-the-art chassis, the 125 SX remains a favorite among young champions. Specs and pictures Detailed rating Add a comment Add your rating | |
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2015 KTM 125 SX Colors: Orange/black Price as new: 5549 GBP Engine: 124.80 ccm Dry weight: 90.80 kg Manufacturers profilation: The 125 SX has long since established itself as the undisputed top dog above all in junior race series and as a springboard to the professional leagues. Powered by a high-performance 2-stroke engine with exhaust control system and 6-speed transmission, the 125 SX has been further improved for the 2015 model year, ensuring it will maintain its popularity with young champions in future. Specs and pictures Detailed rating Add a comment Add your rating | |
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2014 KTM 125 SX Colors: Orange/black Engine: 124.80 ccm Dry weight: 90.80 kg Manufacturers profilation: Top-quality, CNC-machined triple clamps have been something of a KTM trademark. Ensuring a precise handling, they perceptibly support the flex characteristics, and with it, the fork´s action. Specs and pictures Detailed rating Add a comment Add your rating | |
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2013 KTM 125 SX Colors: Orange/black Price as new: 5345 GBP Engine: 124.80 ccm Dry weight: 90.80 kg Manufacturers profilation: How can you identify future champions? By the bike they ride. The KTM 125 SX has been the springboard to a professional career for many a hungry young rider. And this will continue to be the case, what with new bodywork and significantly revamped suspension. Driven by the powerful 2-stroke engine with exhaust control system and 6-speed transmission, the lightest bike in its class has long been at the top of the pile. Specs and pictures Detailed rating Add a comment Add your rating | |
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2012 KTM 125 SX Colors: Orange/black/white Price as new: 5195 GBP Engine: 124.80 ccm Dry weight: 91.60 kg Manufacturers profilation: Those wanting to race in the Junior World Championship need look no further than the 125 SX. The free-revving and lively two-stroke engine has gained even more performance for the current season. Specs and pictures Detailed rating Add a comment Add your rating | |
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2011 KTM 125 SX Colors: Orange/black/white Engine: 124.80 ccm Dry weight: 88.80 kg Manufacturers profilation: Those seeking a contender in the Junior World Championship need look no further than the 125 SX. Thanks to the improved silencer, new airbox and the flow-optimised intake flange between filter and carburettor, the 125 SX has even more power at its disposal. Specs and pictures Detailed rating Add a comment Add your rating | |
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2010 KTM 125 SX Colors: Orange Engine: 124.80 ccm Dry weight: 90.80 kg Manufacturers profilation: Anyone looking for a winning bike in the MX2 class is hard pushed to pass by the 125 SX. And we mean that literally! An optimally balanced chassis sets the standard for the class. Specs and pictures Detailed rating Add a comment Add your rating | |
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2009 KTM 125 SX Colors: Orange/black Engine: 124.80 ccm Dry weight: 90.80 kg Manufacturers profilation: The new 125 SX sets the standards in this field, and not just with its optimized chassis. It is ultra-light, super-agile and also convinces with a level of power which most four-strokes will find hard to beat. Specs and pictures Detailed rating Add a comment Add your rating | |
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2008 KTM 125 SX Engine: 124.80 ccm Dry weight: 90.80 kg Manufacturers profilation: Anybody who’s looking for an extremely light and agile two-stroke cross bike that’s got so much power it makes even four-strokes eat its dust… can stop looking! Specs and pictures Detailed rating Add a comment Add your rating | |
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2007 KTM 125 SX Engine: 124.80 ccm Dry weight: 92.40 kg Manufacturers profilation: Ultra light, mega agile and with its new cylinder, even stronger than before. With its completely new chassis and the newly designed plastics the 125 SX is the ultimate bike for all MX2 racers who find the four valve technology of a four-stroke too complex. Specs and pictures Detailed rating Add a comment Add your rating | |
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2006 KTM 125 SX Engine: 124.80 ccm Dry weight: 92.40 kg Manufacturers profilation: This is the measure of all motocross World Championship bikes with a genuine factory engine! There has never before been a bike like this for sale. Feather light and with any amount of power, the KTM 125 SX leaves ample room to correct the line and is always easy to control. With its redesigned chassis setup, new V-Force 3 membrane and a broad range of revolutions, it makes other 125 cc 2-strokes look old. And it’s only KTM that supplies high quality series details like the adjustable CNC-machined triple clamp. Specs and pictures Detailed rating Add a comment Add your rating | |
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2005 KTM 125 SX Engine: 124.80 ccm Dry weight: 92.40 kg Manufacturers profilation: Robust, light and the measure of all things in terms of power and performance: its power-to-weight ratio has been the decisive argument in the 125 class for years. No bike whips through the curves better and yet remains easily controllable. Specs and pictures Detailed rating Add a comment Add your rating | |
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2004 KTM 125 SX Colors: Orange Engine: 124.80 ccm Dry weight: 93.60 kg Manufacturers profilation: The 125 SX has developed to the motorcycle of its class. With lively engine characteristics and optimal cross-handling this motorcycle is the best of many years in the world championship and winner of the US national Championship. By the use of a V-Force Intake System and a new exhaust the performance is improved significantly. Specs and pictures Detailed rating Add a comment Add your rating | |
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2003 KTM 125 SX Engine: 124.80 ccm Dry weight: 93.60 kg Specs and pictures Detailed rating Add a comment Add your rating | |
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1999 KTM SX 125 Engine: 124.80 ccm Dry weight: 91.00 kg Specs and pictures Detailed rating Add a comment Add your rating |
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