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The values presented on this site are for estimation purposes only. Your actual payment may vary based on several factors such as down payment, credit history, final price, available promotional programs and incentives. Applicable tag, title, destination charges, taxes and other fees and incentives are not included in this estimate.

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  • New-2025-KTM-300 SX
  • New-2025-KTM-300 SX
  • New-2025-KTM-300 SX
  • New-2025-KTM-300 SX
  • New-2025-KTM-300 SX
  • New
  • Action Power Sports
  • M8730 M8778
  • Motorcycle / Scooter
  • Off-Road
  • ORANGE

New 2025 KTM 300 SX Dirt Bike For Sale In Waukesha, WI

This New 2025 KTM 300 SX Dirt Bike is for sale at Action Power Sports located in Waukesha, Wisconsin. Reach out to Action Power Sports today CONTACT US. If this isn't the exact KTM Dirt Bike you're looking for don't hesitate to go back and REVISE YOUR SEARCH. We're sure to have the perfect KTM for you in our showroom near Milwaukee, WI. Visit Action Power Sports, Wisconsin’s premier KTM dealership.

Action Power Sports

Address: S14W22605 Coral Dr, Waukesha, WI 53186

Phone: (262) 232-6580

2025 KTM 300 SX

When it comes to power-to-weight ratios, the KTM 300 SX writes the rule book. Now with learnings taken directly from the KTM Factory Racing teams, and a care package labeled "Go get 'em!", the 2025 KTM 300 SX is engineered for one task alone - to lead from the front.

Features may include:

BEFORE THE GATE

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 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.

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 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.

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 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 300 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.

START STRONG

SMOOTHER POWER DELIVERY
  • EFI + Power Valve

With EFI comes great rideability. Along with the electronic fuel injection and a power valve on the KTM 300 SX, allowing for more usable power throughout the rev range. Smoother power means better traction. Better traction means holeshot heaven!

UNMATCHED PERFORMANCE
  • Performance

The new 300 cc 2-stroke powerhouse brings a new choice of weapon into the MX Open category and provides more choice for racers looking for maximum power at the least possible weight. Along with low maintenance costs, an overall engine weight of just 23,9 kg, the 2025 KTM 300 SX provides pure performance. And then some.

PICK YOUR POWER
  • Selectable Maps

The 2025 KTM 300 SX features a map select switch allowing the racer to switch between 2 engine maps. Map 1 provides a

  • New
  • M8730 M8778
  • 2025
  • KTM
  • 300 SX
  • Motorcycle / Scooter
  • Off-Road
  • 1-cylinder, 2-stroke engine
  • 293.2 cm³
  • 72 mm
  • 72 mm
  • Electric starter
  • Vitesco Technologies EMS
  • Keihin EFI, throttle body 39 mm
  • 5-speed
  • Wet, DDS multi-disc clutch, Brembo hydraulics
  • Head Angle: 63.9 °
  • Neken, aluminium Ø 28/22 mm
  • 520, Non-sealed
  • Central double-cradle-type 25CrMo4 steel | Rear Subframe Design: Aluminum-reinforced polyamide
  • WP XACT-USD (AER), Ø 48 mm
  • WP XACT Monoshock with linkage
  • 310 mm
  • 300 mm
  • 260 mm
  • 220 mm
  • Disc brake
  • Disc brake
  • Spoked wheels with aluminium rims
  • 354 mm
  • 958 mm
  • 1493 mm
  • Tank: 7.2 l
  • Without Fuel: 99.4 kg

Advertised pricing excludes applicable taxes title and licensing, dealer set up, destination, reconditioning and are subject to change without notice. Pricing may exclude any added parts, accessories or installation unless otherwise noted. Sale prices include all applicable offers. Not all options listed available on pre-owned models. Contact dealer for details.