Motocross · 2-stroke · Youth 50

KTM 50 SX

2027 · Where it starts.

The first step in the Sportminicycle range: a steel frame, a real two-stroke engine, WP XACT suspension and hydraulic brakes — built for small kids who want to go fast, and parents who want it done properly. Available through NTG for teams and resellers, EU-wide.

€ 3 995net · excl. VAT · per unit

See how to order Technical details
2027 KTM 50 SX Right view 2027 KTM 50 SX Front ¾ view 2027 KTM 50 SX Left view 2027 KTM 50 SX Rear ¾ view

01.Before the gate

Fit, fuelling and ignition — set once, then let them ride.

3 features
2027 KTM 50 SX — Adjustability

Find the right fit

Adjustability

Height-adjustable suspension, handlebar position, subframe and bodywork, developed from real data on young riders. The seat height moves with the rider, so the bike fits at the start of the season and at the end of it.

2027 KTM 50 SX — Carburettor

The heart

Carburettor

A proven Dell'Orto PHBG 19 BS carburettor, matched to the engine, exhaust and intake. Simple and dependable.

2027 KTM 50 SX — Ignition

Get started

Ignition

Digital ignition with individual timing across the whole rev range, as on the full-size SX — a cleaner burn and smoother delivery. A stabiliser cap protects the throttle cable from kinking.

02.Start strong

A compact three-shaft engine, an automatic clutch, and power-reduction kits for the first season.

4 features
2027 KTM 50 SX — Performance

Unmatched performance

Performance

A modern, compact two-stroke with a three-shaft layout that puts the crankshaft near the centre of gravity — better mass centralisation and the ideal intake angle into the reed valve. Real performance in a 43.5 kg bike.

  • 49.9cm³
  • 43.5 kgwithout fuel
2027 KTM 50 SX — Clutch

Race-matic

Clutch

An adjustable centrifugal multi-disc clutch takes the complexity away and builds confidence: precise, predictable delivery across the rev range, tunable to the rider and the track without tools.

2027 KTM 50 SX — Power-reduction kits

Whoa Nelly

Power-reduction kits

For absolute beginners, two PowerParts kits: a moderate, controllable 4 hp for the first rides, and an intermediate 8 hp when they're ready for more. Ask us to include one with the bike.

2027 KTM 50 SX — Spark plug

Bright spark

Spark plug

A BRISK plug with a longer thread — no more broken plugs, and the part number printed where you can read it.

03.Calm under fire

A chromoly frame and bodywork scaled from the full-size SX.

4 features
2027 KTM 50 SX — Frame

Built tough

Frame

High-strength chromium-molybdenum steel with forged connecting parts and calculated flex and rigidity — the same frame philosophy as the big bikes, in mini scale.

2027 KTM 50 SX — Ergonomics

Slimmer and sleeker

Ergonomics

The same advances as the larger SX models: slimmer, sleeker, better for standing, with side panels that let small boots squeeze the bike properly.

2027 KTM 50 SX — Handlebars & grips

Get a grip

Handlebars & grips

A tapered black aluminium-alloy bar with a bend designed for young riders, an ODI grip on the left and a vulcanised ODI grip on the throttle side.

2027 KTM 50 SX — Airbox and filter

Breathe clean

Airbox and filter

A hard-wearing polyamide intake sleeve and a Twin Air filter on snap locks under the seat — accessible without tools.

04.Hit the big stuff

WP XACT suspension, hydraulic brakes, MAXXIS rubber — nothing here is a toy part.

4 features
2027 KTM 50 SX — Suspension

Ride rough

Suspension

A lightweight 35 mm WP XACT AER USD fork with 165 mm of travel, air-adjustable for rider weight and track, paired with a WP XACT monoshock adjustable for compression and rebound.

  • Ø 35 mmfork
  • 165 / 190 mmtravel
2027 KTM 50 SX — Brakes

Stopping power

Brakes

Hydraulic calipers and wave discs front and rear, the same level of technology as the full-size SX — real braking feel in all conditions.

2027 KTM 50 SX — Wheels & tires

Rip 'n go

Wheels & tires

Lightweight black-anodised aluminium rims like the full-size SX, with MAXXIS MX-ST tires for traction on any terrain.

2027 KTM 50 SX — Footpegs

Boot hold

Footpegs

No-dirt footpegs with a bigger surface for grip when standing, less likely to hook a rut, a take-off or a track barrier.

05.Maintaining momentum

Cooling, exhaust and an hour meter — so the bike stays in the state it was delivered in.

3 features
2027 KTM 50 SX — Radiator

Stay cool

Radiator

One large Pankl radiator instead of two small ones — more capacity, better integration, and the cooling properties of the full-size SX range.

2027 KTM 50 SX — Exhaust

Bring the braaap

Exhaust

Built with the same process as the full-size two-stroke SX pipes, with tighter end-cap sealing and a rubber joint between header and silencer.

2027 KTM 50 SX — Hour meter

Keep in check

Hour meter

Mounted behind the front number plate as on the full-size SX — easy to read, and out of the dirt and water.

06.Warranty & support

New bikes, delivered through authorised channels, with the paperwork the warranty is tied to.

2027 KTM 50 SX — Premium manufacturer's warranty

Model year 2027 onwards

Premium manufacturer's warranty

Offroad bikes from model year 2027 carry up to 1 year of manufacturer coverage. It stays valid with intended use and scheduled services at an authorised KTM dealer, under the standard conditions on the delivery certificate. Every bike NTG supplies is new and comes with that certificate.

Technical details

Specifications

Manufacturer data, model year 2027. Delivered spec can vary by market — we confirm on the order confirmation.

Design1-cylinder, 2-stroke
Displacement49.9 cm³
TransmissionSingle speed
CarburettorDell'Orto PHBG 19 BS
ClutchCentrifugal, adjustable
Primary drive33:61
FrameCentral-tube frame with double cradle, chromoly steel
SubframeSteel / polyamide glass fibre
Front brakeHydraulic, wave disc
Rear brakeHydraulic, wave disc
Chain415, non-sealed
TiresMAXXIS MX-ST
FrontWP XACT 35 USD (AER), Ø 35 mm
RearWP XACT monoshock
Travel front165 mm
Travel rear190.5 mm
Front adjustmentAir preload, compression, rebound
Rear adjustmentCompression, rebound
Seat height653 mm
Ground clearance233 mm
Tank capacity2.3 l
Weight, without fuel43.5 kg

Order

2027 KTM 50 SX

New, uncrated, delivered through authorised channels. Priced net, excl. VAT, for teams and resellers. Tell us the quantity and destination and we quote within one working day.

  • AvailabilityOn request
  • Price€ 3 995 net · excl. VAT
  • DeliveryEU-wide
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Product images and technical data © KTM AG, used for product identification. North Trade Group is an independent trader and not an authorised KTM dealer or distributor. Specifications subject to change by the manufacturer.