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As always, the suspension boasts an easy tool-free setup at both ends, ensuring you chase down the podium in total control. On the rear, a hand-adjustable dual compression control allows riders to adjust high- and low-speed settings in a matter of seconds. The forks on the front end are also easily adjusted thanks to hand-adjustable clickers on the bottom of the fork shoe and top cap.
Designed to provide maximum airflow, the air filter box is designed with precisely positioned inlet ducts aimed at preventing air deformation and maintaining filter protection. The Twin Air filter and air filter support design feature a simple fail-proof mounting system for secure and accurate filter installation, ensuring the air filter is easily accessed, without tools, by removing the left side panel, for easy track-side maintenance. A vented air filter box cover is also included for all SX and SX-F models in the by-pack.
The 2025 KTM 450 SX-F engine is positioned for optimal mass centralisation and an overall lightweight feel, benefiting handling and anti-squat behaviour. The silencer offers incredible response in combination with the mapping switch and provides a slightly quieter exhaust note.
Launch control, ENGAGED! Designed for the hole-shot, the 2025 KTM SX-F range comes standard with launch control and Quickshifter function, allowing for fast upshifts without using the clutch. Launch control is easily engaged by pressing the traction control and Quickshifter buttons simultaneously and works by limiting the amount of power to the rear wheel, improving traction, and preventing loss of control under hard acceleration. Meanwhile, the Quickshifter function means you can bang through from 2nd to 5th gear with your focus solely on the first corner.
Conquer any track with the KTM's frame design that emphasizes longitudinal rigidity and centralises rotating mass. Enhanced shock mounting offers better traction out of corners, while the inward-shifted footpeg mounting reduces the risk of getting stuck in ruts or while clearing jumps.
When the war drums sound and the gate drops, you need to be the first to off the line in a bid to rule the roost. The 2025 KTM 450 SX-F boasts one of the most manic 4-stroke powerplants in the paddock, with its SOHC engine proving to be the perfect example of advanced engineering. With a massive peak power output, and an overall engine weight of only 59 lbs (26.8 kg), you'll leave the competition with more than a little mud on the face
The bike's reduced weight and mass centralization lead to significantly improved anti-squat behavior, ensuring efficient power delivery when exiting corners.
Equipped with a WP XACT shock absorber featuring low-friction SKF linkage seals and advanced damping characteristics, the bike delivers lap-after-lap consistency, providing excellent traction and energy absorption.
Getting power hooked into the dirt is a tough job. However, hours of research and testing have led the 2025 KTM Motocross range to the Dunlop GEOMAX MX34. Providing unmatched stability and control at the highest level, these rubber hoops feature a new carcass and rubber compound that improves damping and absorption, maintaining performance up to 30% longer. New Progressive Cornering Block Technology also improves grip in the berms, while a new rear pattern with 11% taller and 44% wider center block for increased traction and control everywhere else. Lastly, this unique block arrangement works to dispel mud buildup, ensuring traction in even the muddiest of track conditions.
ENGINE | |
| Transmission | 5 Speed |
| Starter | Electric Starter |
| Stroke | 63.4 mm |
| Bore | 95 mm |
| Clutch | Wet, DDS Multi-disc clutch, Brembo Hydraulics |
| Displacement | 449.9 cm³ |
| EMS | Keihin EMS |
| Design | 1-cylinder, 4-stroke engine |
CHASSIS | |
| Weight (without fuel) | 102.6 KG |
| Tank Capacity (Approx.) | 7.2 L |
| Front Brake Disc Diameter | 260 mm |
| Rear Brake Disc Diameter | 220 mm |
| 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 (AER), Ø 48 mm |
| Rear Suspension | WP XACT Monoshock with linkage |
| Ground Clearance | 343 mm |
| Seat Height | 958 mm |
| Suspension Travel (Front) | 310 mm |
| Suspension Travel (Rear) | 300 mm |
With KTM Finance, nothing stands in your way – you can now ride away on your own dream set of wheels. Our range of finance packages gives you the freedom to hop onto your READY TO RACE bike as early as tomorrow, as well as giving you the option to enhance your KTM even more with official KTM PowerParts.
The benefit of using these finance plans is that you can configure them yourself, making them flexible and tailored to you. You choose an installment amount that best fits your lifestyle and budget by adjusting your deposit or term, and you'll be in the seat before you know it. It's easy to customise the monthly amounts to suit your situation.
You enjoy flexibility with a variety of finance plans from KTM Finance. Want a new motorcycle? A few more performance-boosting KTM PowerParts? What about some extra items from the stylish KTM PowerWear range? No problem! With a range of finance plan from KTM, you'll get exactly what you need. It's flexible and personalised. KTM Finance offers you a full package that fulfills your every wish.
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Finance subject to status. Terms & Conditions apply. At the end of a PCP agreement there are 3 options: (I) Part exchange the vehicle, (ii) Pay the Optional Final Payment / Guaranteed Future Value to own the vehicle or (iii) Return the vehicle. Further charges may be made subject to the condition or mileage of the vehicle. Applicants must be 18 or over. Guarantee may be required. Santander Consumer Finance RH1 1SR.
*PCP available on Road registered models, with a guaranteed future value only.
