KTM 150 SX
Finance AvailableOur Price: £8199 +OTR
WAS £9,399 SAVE £1,2000% finance up to 24 months, 3% up to 36 months
It's back! After a 2-year absence, the 2025 KTM 150 SX is once again ready to tear into your favorite MX track. Get ready to experience what it feels like to be a marble launched from a slingshot. The KTM 150 SX pulls hard from the bottom, gallops in the middle, and sings at the top
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FEATURES
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.
ELECTRIC START
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 2025 KTM 150 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.
EASY SUSPENSION ADJUSTMENT
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.
EFI + POWER VALVE
With EFI comes great rideability. Along with the electronic fuel injection and a power valve on the KTM 150 SX, allowing for more usable power throughout the rev range. Smoother power means better traction. Better traction means holeshot heaven!
PERFORMANCE
Many parts of the 150 SX engine have been rearranged, modified, or developed from the ground up. With an overall weight of just below 18 kg, this is a powerhouse bar none. Designed to provide more torque than its stablemate, the KTM 125 SX, it remains true to its nature, without losing its typical high-revving lightweight 2-stroke character.
SELECTABLE MAPS
The 2025 KTM 150 SX features a map select switch allowing the racer to switch between 2 engine maps. The White Map - or Map 1 - provides a linear, predictable power delivery ideally suited to attack hard-packed dirt with a leaner air-fuel mixture. Alternatively, the Green Map - Mapping 2 - is tuned for loose, thick sandy conditions with a richer mix.
WP XACT FORK
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 pressurized 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 p
WP XACT SHOCK
Keeping things in check at the rear, the WP XACT rear shock has also undergone some changes for 2025 using settings directly from the KTM Factory Racing Teams The improved frame and shock geometry mean more ground clearance at the linkage, making it less susceptible to bottoming out. While we're on the topic, smaller diameter linkage bolts save weight, while new linkage seals refine rear shock response and advanced damping characteristics.
ENERGY ABSORPTION
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.
ABSOLUTE CONTROL
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 fo
FINANCE
HP (Hire Purchase)
MONTHLY PAYMENT
Preferred Deposit
Preferred Term
Terms & Conditions (HP)
Cash Price £8248.00. Total Deposit .
Total Amount of Credit . Payments of .
Duration of Agreement is . Fees of £1.00 are included
in the payments shown. Total Amount Payable is . Annual
Fixed Interest Rate of
%. Actual rate will be adjusted to include the deferred final payment. APR
%.
T&Cs apply. Subject to status. 18s and over. Guarantee may be required. Santander Consumer Finance RH1 1SR. This quotation, available through Santander Consumer Finance, is valid for 14 days from 29/08/2019. This is not a personal quotation and does not commit Santander Consumer Finance to enter into an agreement with you. Be sure you can afford the repayments before entering into a credit agreement. Santander Consumer (UK) PLC t/a Santander Consumer Finance is authorised and regulated by the Financial Conduct Authority in respect of agreements regulated by the Consumer Credit Act 1974 and for general insurance mediation activity. Authority under firm reference number is 444327.
At the end of the agreement there are 3 options: (i) Part exchange the vehicle. (ii) Pay the Optional Final Payment to own the vehicle or (iii) Return the vehicle. Further charges may be made subject to the condition or mileage of the vehicle.
VIDEOS
150 SX
TECHNICAL DETAILS
ENGINE
ENGINE TYPE
1-cylinder, 2-stroke engine
DISPLACEMENT
143.99
CERTIFICATION
Euro 5
CLUTCH
Wet multi-disc DS clutch, Brembo hydraulics
GEARBOX
6 Speed
FINAL DRIVE
Chain
COOLING SYSTEM
Liquid cooled
STARTING
Electric
CHASSIS
FRAME
Central double-cradle-type 25CrMo4 steel
FRONT SUSPENSION
WP XACT-USD (AER), Ø 48 mm
FRONT BRAKE
260 mm
REAR SUSPENSION
WP XACT Monoshock with linkage
REAR BRAKE
220 mm