Motocross · 2-stroke · Youth 85

KTM
85 SX 19/16

2027 · The last step before the big bikes.

Developed at international level and built to be ridden hard: full-size components, a scaled chassis, and the speed a fast junior needs before the move to 125s. Available through NTG for teams and resellers, EU-wide.

€ 5 390net · excl. VAT · per unit

See how to order Technical details
2027 KTM 85 SX 19/16 Right view 2027 KTM 85 SX 19/16 Front ¾ view 2027 KTM 85 SX 19/16 Left view 2027 KTM 85 SX 19/16 Rear ¾ view

01.Before the gate

Combustion, ignition and adjustable suspension — the parts that decide how the first lap goes.

3 features
2027 KTM 85 SX 19/16 — Combustion chamber

Light it up

Combustion chamber

A redesigned combustion chamber with a smaller spark plug burns more completely and more efficiently. The compression ratio is revised, and the result is more power and more torque from the same 85 cc.

2027 KTM 85 SX 19/16 — Adjustable suspension

Pumped up

Adjustable suspension

WP XACT at both ends, and both adjustable. The AER fork is set with an air pump for rider weight and track; the monoshock is adjustable for preload, compression and rebound. A bike that fits the rider, not the other way round.

2027 KTM 85 SX 19/16 — Ignition

Racer, start your engine

Ignition

A Hidria CDI unit with more processing power and a sharper ignition curve: faster starts, smoother running, and less warm-up time on cold mornings.

02.Start strong

The reference engine in the 85 gate — and the optional 105 kit for bigger tracks.

4 features
2027 KTM 85 SX 19/16 — Engine

Powered on

Engine

120 g lighter than the previous generation and integrated more tightly with the chassis. Punch low and mid, real torque, and the reliability a season of racing demands — this is the engine the 85 class measures itself against.

  • 84.9cm³
  • 6-speed
  • 69 kgwithout fuel
2027 KTM 85 SX 19/16 — Shifting mechanism

Shiftin' gears

Shifting mechanism

An updated, coated shift drum makes every change up and down the box smoother and more reliable — and keeps it that way after many hours of use.

2027 KTM 85 SX 19/16 — Exhaust

More braaap

Exhaust

The pipe is built with the same seamless process as the full-size two-stroke SX range. No seams between sheets means cleaner flow and better thermodynamics — a pipe that performs, not just one that fits.

2027 KTM 85 SX 19/16 — Factory Performance Kit

More power

Factory Performance Kit

For bigger track layouts there is the 105 Factory Kit: uprated engine components, cylinder head, combustion-chamber insert, CDI unit and spark plug. Available through NTG with the bike.

03.Calm under fire

A scaled-down full-size bike — ergonomics, clamps and controls built for a young rider who is already racing.

4 features
2027 KTM 85 SX 19/16 — Triple clamps, bars & pegs

In touch with the rider

Triple clamps, bars & pegs

Triple clamps with an improved upper fixing that keeps dirt and water away from the steering-head bearings, serviced with a single 17 mm wrench. Tapered black Neken handlebars in aluminium alloy, and no-dirt footpegs that stay grippy when the track doesn't.

2027 KTM 85 SX 19/16 — Ergonomics

Fluid rider motion

Ergonomics

Carefully scaled from the full-size SX range, so the bike looks and feels like the one the rider will move up to. The riding position teaches the right habits early.

2027 KTM 85 SX 19/16 — Throttle cable

Steadier on the gas

Throttle cable

A stabiliser cap on the throttle assembly stops the cable kinking and extends its life. Hold it open wider, for longer.

2027 KTM 85 SX 19/16 — Tank

Fully fuelled

Tank

5.4 litres, shaped to the frame and bodywork so young knees have something to grip when standing.

04.Hit the big stuff

A chromoly frame and WP XACT suspension straight out of the full-size playbook.

5 features
2027 KTM 85 SX 19/16 — WP XACT fork

Unflappable front end

WP XACT fork

Ultra-light 43 mm WP XACT AER USD fork with the damping and comfort to let a young rider push with confidence.

  • Ø 43 mm
  • 278 mmtravel
2027 KTM 85 SX 19/16 — WP XACT shock

Track smoother

WP XACT shock

A fully adjustable WP XACT monoshock matched to the fork — balanced damping, more traction, a planted feel and control at speed.

  • 289 mmtravel
2027 KTM 85 SX 19/16 — Frame

Bringing the backbone

Frame

High-strength chromium-molybdenum steel frame taken from the full-size SX range: forged connecting parts, calculated longitudinal flex and torsional rigidity, no cross tube behind the engine — an MX layout, not a scaled-down compromise.

2027 KTM 85 SX 19/16 — Subframe

Rigid reinforcement

Subframe

One-piece polyamide, glass-fibre-reinforced aluminium subframe: lighter, with engineered rigidity for handling and feedback, and the mounting point for electronics, seat and hour meter.

2027 KTM 85 SX 19/16 — Wheels and tires

Racing on rails

Wheels and tires

Black Excel rims on CNC-machined hubs, fitted with MAXXIS MAXXCROSS MX-ST tires — straight-line stability and traction across terrain. Supplied in the 19/16 wheel size.

05.Maintaining momentum

Breathing and cooling that keep the engine at its best lap after lap.

2 features
2027 KTM 85 SX 19/16 — Airbox and filter

Breathe in deep

Airbox and filter

Inlet ducts positioned to keep airflow undistorted and the filter protected. The Twin Air filter comes out without tools once the left side panel is off.

2027 KTM 85 SX 19/16 — Radiators

Precise, lap after lap

Radiators

Pankl radiators inspired by the full-size SX range, shortened to fit the 85 — the engine stays at the right temperature when it is being ripped around the track, lap after lap.

06.Warranty & support

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

2027 KTM 85 SX 19/16 — 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
Displacement84.9 cm³
Transmission6-speed
CarburettorKeihin PWK 28
ClutchWet multi-disc, Formula hydraulics
Primary drive20:64
FrameCentral-tube frame with double cradle, chromoly steel
SubframeAluminium / polyamide glass fibre
Front brakeDisc
Rear brakeDisc
Chain428, non-sealed
Wheels19" / 16", Excel rims
TiresMAXXIS MAXXCROSS MX-ST
FrontWP XACT 43 USD (AER), Ø 43 mm
RearWP XACT PDS monoshock
Travel front278 mm
Travel rear289 mm
Front adjustmentAir preload, compression, rebound
Rear adjustmentPreload, compression, rebound
Seat height871 mm
Ground clearance333 mm
Tank capacity5.4 l
Weight, without fuel69 kg

Order

2027 KTM 85 SX 19/16

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€ 5 390 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.