2027 KTM 300 SX

Meet the 2027 KTM 300 SX in Orange / Black—a brand-new motocross machine that looks fast sitting still and feels even faster the second you point it at the first jump face. The bold Orange / Black vibe isn’t just for show; it matches the bike’s no-nonsense attitude: built to charge hard, reset quickly, and line up for “one more lap” until the track lights go out.

At the heart of it is a 293.2cc liquid-cooled, single-cylinder, 2-stroke setup with a reed valve arrangement and a perfectly square 72 mm bore and 72 mm stroke. It’s the kind of engine that lives for crisp throttle moments—especially with Keihin fuel injection (39 mm) feeding a gas/oil premix diet that calls for premium. Hit the button with the electric starter, and it’s ready to rip without the pre-ride ritual.

Power gets to the ground through a 5-speed manual transmission with overdrive, sending drive to the rear wheel via chain. With a dry weight of 219.1 lbs, the bike stays light on its feet, and the balance is backed up by a chromium molybdenum frame paired with purposeful plastic bodywork. It’s made to take the hits, shrug off roost, and keep moving.

Suspension is track-minded from the start: WP XACT components front and rear. Up front, you get a 48 mm inverted fork with 12.2 in of travel plus adjustable preload and rebound damping. Out back, a twin-sided swingarm with an aluminum rear suspension and a single shock delivers 11.8 in of travel, with adjustable spring preload and rebound damping to help you dial it in for braking bumps, ruts, or that sketchy section that always develops mid-moto.

Rolling stock is equally serious: Excel® aluminum wheels (tubed), a 21-inch front and 19-inch rear, wrapped in Dunlop® GEOMAX MX34 rubber (80/100 R21 up front, 110/90 R19 rear). When it’s time to scrub speed, Brembo® hydraulic discs handle the job—260 mm up front with a 2-piston caliper and 220 mm in the rear with a 1-piston caliper.

Add in practical protection like a chain guard, fork guards, frame guard, exhaust guard, and radiator cover, then finish it off with a one-piece vinyl seat at a tall 37.7 inches and a kick stand for the in-between moments. The 2027 KTM 300 SX is here for riders who want the full motocross experience—sharp, light, and unapologetically Orange / Black.

Color Options* Orange / Black: +$0

Pricing* Warranty (Months): 1

Engine* Engine Type: Single-Cylinder
* Cylinders: 1
* Cooling: Liquid
* Bore: 72 mm; 2.83 in
* Stroke: 72 mm; 2.83 in
* Displacement: 293.2 cc; 17.9 ci
* Starter: Electric
* Fuel Type: Gas / Oil Premix
* Carburetion Type: Fuel Injected

Transmission* Transmission Type: Manual
* Reverse: No

Technical Specifications* Wheelbase: 58.8 in; 1493 mm
* Ground Clearance: 13.9 in; 354 mm
* Dry Weight: 219.1 lbs; 99.4 kg
* Fuel Capacity: 1.9 gal; 7.2 l

Exterior* Frame: Chromium Molybdenum

Suspension* Front Suspension Type: Inverted Fork
* Front Travel: 12.2 in; 310 mm
* Rear Suspension Type: Twin Sided Swing Arm
* Rear Travel: 11.8 in; 300 mm

Wheels & Tires* Front Tire (Full Spec): Dunlop® GEOMAX MX34 80/100 R21 51M
* Rear Tire (Full Spec): Dunlop® GEOMAX MX34 110/90 R19 62M

Brakes* Front Brake Type: Hydraulic Disc
* Rear Brake Type: Hydraulic Disc

Seats* Seat Height: 37.7 in; 958 mm
* Number Of Seats: 1

Instrumentation* Tachometer: Optional
Meet the 2027 KTM 300 SX in Orange / Black—a brand-new motocross machine that looks fast sitting still and feels even faster the second you point it at the first jump face. The bold Orange / Black vibe isn’t just for show; it matches the bike’s no-nonsense attitude: built to charge hard, reset quickly, and line up for “one more lap” until the track lights go out.

At the heart of it is a 293.2cc liquid-cooled, single-cylinder, 2-stroke setup with a reed valve arrangement and a perfectly square 72 mm bore and 72 mm stroke. It’s the kind of engine that lives for crisp throttle moments—especially with Keihin fuel injection (39 mm) feeding a gas/oil premix diet that calls for premium. Hit the button with the electric starter, and it’s ready to rip without the pre-ride ritual.

Power gets to the ground through a 5-speed manual transmission with overdrive, sending drive to the rear wheel via chain. With a dry weight of 219.1 lbs, the bike stays light on its feet, and the balance is backed up by a chromium molybdenum frame paired with purposeful plastic bodywork. It’s made to take the hits, shrug off roost, and keep moving.

Suspension is track-minded from the start: WP XACT components front and rear. Up front, you get a 48 mm inverted fork with 12.2 in of travel plus adjustable preload and rebound damping. Out back, a twin-sided swingarm with an aluminum rear suspension and a single shock delivers 11.8 in of travel, with adjustable spring preload and rebound damping to help you dial it in for braking bumps, ruts, or that sketchy section that always develops mid-moto.

Rolling stock is equally serious: Excel® aluminum wheels (tubed), a 21-inch front and 19-inch rear, wrapped in Dunlop® GEOMAX MX34 rubber (80/100 R21 up front, 110/90 R19 rear). When it’s time to scrub speed, Brembo® hydraulic discs handle the job—260 mm up front with a 2-piston caliper and 220 mm in the rear with a 1-piston caliper.

Add in practical protection like a chain guard, fork guards, frame guard, exhaust guard, and radiator cover, then finish it off with a one-piece vinyl seat at a tall 37.7 inches and a kick stand for the in-between moments. The 2027 KTM 300 SX is here for riders who want the full motocross experience—sharp, light, and unapologetically Orange / Black.

Color Options* Orange / Black: +$0

Pricing* Warranty (Months): 1

Engine* Engine Type: Single-Cylinder
* Cylinders: 1
* Cooling: Liquid
* Bore: 72 mm; 2.83 in
* Stroke: 72 mm; 2.83 in
* Displacement: 293.2 cc; 17.9 ci
* Starter: Electric
* Fuel Type: Gas / Oil Premix
* Carburetion Type: Fuel Injected

Transmission* Transmission Type: Manual
* Reverse: No

Technical Specifications* Wheelbase: 58.8 in; 1493 mm
* Ground Clearance: 13.9 in; 354 mm
* Dry Weight: 219.1 lbs; 99.4 kg
* Fuel Capacity: 1.9 gal; 7.2 l

Exterior* Frame: Chromium Molybdenum

Suspension* Front Suspension Type: Inverted Fork
* Front Travel: 12.2 in; 310 mm
* Rear Suspension Type: Twin Sided Swing Arm
* Rear Travel: 11.8 in; 300 mm

Wheels & Tires* Front Tire (Full Spec): Dunlop® GEOMAX MX34 80/100 R21 51M
* Rear Tire (Full Spec): Dunlop® GEOMAX MX34 110/90 R19 62M

Brakes* Front Brake Type: Hydraulic Disc
* Rear Brake Type: Hydraulic Disc

Seats* Seat Height: 37.7 in; 958 mm
* Number Of Seats: 1

Instrumentation* Tachometer: Optional