2027 KTM 125 SX

2027 KTM 125 SX – Built for serious motocross performance, the 2027 KTM 125 SX features a powerful 125cc fuel-injected two-stroke engine, lightweight chromoly steel frame, WP XACT suspension, hydraulic clutch, electric start, and race-focused electronics. With sharp handling and KTM's legendary READY TO RACE engineering, the 125 SX is ready to attack every jump, corner, and finish line.

2027 KTM 125 SX

FULL-SCREAM AHEAD

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 full throttle. The KTM 125 SX takes its leads directly from the KTM Factory Racing team for pure performance, pure results. Like the sound it makes, you won't forget it.

Features may include:

CLICK INTO ACTION

• 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 option allows riders to adjust high- and low-speed settings in a matter of seconds. The forks on the front end are also easily modified thanks to hand-adjustable clickers on the bottom of the fork shoe and top cap.

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 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!

• 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 don't sweat it. All you do is press the starter button and you blast off again to take the flag. This is the reality on the KTM SX models. Thanks to a 12,8V 2 Ah lithium ion battery is placed under the rider's seat, a high-quality starter & pickup and super robust design, the only thing you'll be kicking - is ass.

MORE BRAAAP

• FACTORY PERFORMANCE KIT

Give your KTM 125 SX a more bite with a 125 Factory Performance Kit. Comprising of upgraded engine parts, FMF exhaust, and special engine mapping, it provides a strong power increase across the rpm range.

SMOOTHER POWER DELIVERY

• EFI + POWER VALVE

With EFI comes great rideability. Along with the electronic fuel injection is an electronic power valve on the KTM 125 SX, allowing for more usable power throughout the rev range. Smoother power means better traction. Better traction means holeshot heaven!

UNMATCHED PERFORMANCE

• PERFORMANCE

Designed to churn out torque, the KTM 125 SX is set to continue its dominance in its class with unrelenting forward momentum. The overall engine weight is only 39.7 lb (17.86 kg) and carries impressive horsepower figures. This lightweight powerplant retains its typical high-revving character while laying down the grunt where it matters most.

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