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The 2025 KTM 250 SX-F is a truly user-friendly package engineered to satisfy all riders, from novice to pro. But don't for one second think that makes it compromised - it is undisputedly READY TO RACE at any level. Delivering a power punch, and an optional electronic uppercut in reserve, the 2025 KTM 250 SX-F is ready to take on the 250 cc class and deliver a knock-out.
NOW £9,999.00
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.
The 2025 KTM SX and SX-F range is engineered and designed to provide riders with easy-to-access service parts, as well as suspension adjustability. This allows faster track-side and off-season maintenance, as well as making motocross more accessible for novice riders without pit crews.
Get ready for a full-on berm assault. The 2025 KTM SX and SX-F machines have received major frame updates directly from Factory Racing efforts. For starters, the frame area around the rear shock mount has been updated and made more streamlined, with new engine mounts and cut-outs for improved chassis flex. The front area of the frame is also updated. with a different wall thickness than the previous model year, with renewed engine mounts. This adds up to a 300g weight saving and improved flex for better cornering.
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.
The map select switch on the 2025 KTM SX models features a simpler design, allowing for easier functionality in switching between 2 engine maps. Map 1 provides a more linear power curve. while map 2 punches all-out with aggressive throttle and explosive power. Luckily, traction control is easy toggled to an on or off position from the same switch, ensuring maximum traction and a distinct advantage in wet or muddy conditions.
Upgraded tank shrouds using bi-compound plastics channel air towards the radiators more efficiently, while a new fuel tank roll, makes for a tighter, more secure fitment, reducing the chance of frame scrubbing and dramatically improving durability. All this works alongside the specially-developed rider triangle, to provide unmatched knee contact and gripping surfaces - especially when standing on the pegs.
Weighing in at a lightweight 57.5 lbs (26.11 kg), this mid-weight powerhouse churns out a remarkable payload, making it the undisputed performance leader in the 250 cc 4-stroke class. The engine in the 2025 KTM 250 SX-F has also been carefully designed and tuned to best suit the performance and handling characteristics of the overall package, bumping up power in the mid-range and the top-end.
Let's get the technical parts out of the way first; the 48 mm WP XACT AER forks fitted to the 2025 KTM SX and SX-F line-up features a capsulated air spring and pressurised oil chamber for progressive and consistent damping, while oil and air bypasses reduce pressure peaks. In combination with the mid-valve damping system, all this provides exceptional feedback and rider comfort. The fork also boasts new settings, which not only compliment the updated frame and rear linkage, but ensures stellar performance at all levels. Speaking of settings, these are easily adjusted via a single air pressure pre-load valve, as well as easy-access click adjusters for compression and rebound. Additionally, the air pump needed to adjust the fork's air pressure is provided as standard in the buy-pack.
An upgraded rear brake pedal finds its way onto the 2025 KTM Motocross range, adding additional stiffness, bending resistance and braking feel to the overall package. At the other end, a forged steering head connection and CNC-milled triple clamps, make for the perfect alignment of the fork tubes. This precise geometry of the fork clamps ensures highly responsive and smooth fork action – not to mention unwavering stability when charging across ruts and onto the podium.
With iReady to rip your arms out of the sockets? Together with the benefits of mass centralisation and overall reduced weight, the anti-squat behaviour of the chassis is significantly improved by changing the backbone of the steel frame concept. In layman's terms, the 2025 KTM 250 SX-F gets its power down perfectly when tearing out of corners.
ENGINE | |
| Transmission | 5-Speed |
| Starter | Electric Starter |
| Stroke | 48.5 mm |
| Bore | 81 mm |
| Clutch | Wet multi-disc DS clutch, Brembo hydraulics |
| Displacement | 249.9 cm³ |
| EMS | Keihin EMS |
| Design | 1-cylinder, 4-stroke engine |
CHASSIS | |
| Tank Capacity (Approx.) | 7.2L |
| 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.
| OTR | £15,241.30 |
| Customer Deposit | £3,800.00 |
| Amount of Credit | £11,441.30 |
| 48 Monthly Payments of | £95.67 |
| Optional Final Payment | £9,548.75 |
| Total Amount Payable | £16,792.87 |
| Total Charge for Credit | £1,551.57 |
| APR Representative | 4.90% |
| Duration of Agreement | 37 Months |
| Annual Contracted Mileage | 4,000 |
| Excess Mileage Charge | £0.149 (plus VAT) |
| OTR | £14,657.96 |
| Customer Deposit | £3,700.00 |
| Amount of Credit | £10,957.96 |
| 48 Monthly Payments of | £89.80 |
| Optional Final Payment | £9,216.25 |
| Total Amount Payable | £16,149.05 |
| Total Charge for Credit | 1,491.09 |
| APR Representative | 4.90% |
| Duration of Agreement | 37 Months |
| Annual Contracted Mileage | 4,000 |
| Excess Mileage Charge | £0.149 (plus VAT) |
| OTR | £8,824.64 |
| Customer Deposit | £1,800.00 |
| Amount of Credit | £7,024.64 |
| 36 Monthly Payments of | £79.37 |
| Optional Final Payment | £5,062.50 |
| Total Amount Payable | £9,719.82 |
| Total Charge for Credit | £895.18 |
| APR Representative | 4.90% |
| Duration of Agreement | 37 Months |
| Annual Contracted Mileage | 4,000 |
| Excess Mileage Charge | £0.149 |
| OTR | £6,741.30 |
| Customer Deposit | £1,700.00 |
| Amount of Credit | £5,041.30 |
| 36 Monthly Payments of | £55.85 |
| Optional Final Payment | £3,676.25 |
| Total Amount Payable | £7,386.85 |
| Total Charge for Credit | £645.55 |
| APR Representative | 4.90% |
| Duration of Agreement | 37 Months |
| Annual Contracted Mileage | 4,000 |
| Excess Mileage Charge | £0.149 |
