2023 KTM 65 SX Specifications

Name: 2023 KTM 65 SX
Brand: KTM

Minibike, cross • Specs last verified 13 July 2026

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2023 KTM 65 SX Overview

KTM 65 SX is a minibike, cross motorcycle, displacing 64.9 cc. Power comes from a Single cylinder, two-stroke engine. Bore and stroke come in at 45 x 40.8 mm. On the road, the 2023 65 SX tips the scales at 53 kg, carries a 3.70-litre fuel tank, offers a seat height of 750 mm and spans a 1270 mm wheelbase. That's roughly 12.7 kg heavier than the average minibike, cross motorcycle in our database. The full 2023 KTM 65 SX spec sheet below covers every technical detail, from suspension travel to tyre sizes.

2023 65 SX - Pros & Cons

Strengths

Accessible seat height: A 750 mm seat height keeps this manageable for most riders, which helps confidence at parking-lot speeds.

Considerations

Carburetor fuelling: Expect to spend more time keeping the carbs in tune, especially after long storage periods or a change in altitude.
Modest fuel capacity: Range between stops is limited by the 3.70-litre tank - plan fuel stops accordingly on longer routes.
Chain final drive upkeep: Budget time for routine chain maintenance - it's cheap to replace but needs consistent attention to avoid premature sprocket wear.

Wear Points & Servicing Notes

Carburetor maintenance

Carburetors on the 65 SX need periodic attention - pilot jets and float needles are the first parts to gum up after the bike sits, and the first thing to check if idle or throttle response degrades.

Brake disc and pad wear

Braking up front comes from Single disc - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.

Suspension condition on used examples

The 65 SX's suspension runs XACT 35 WP Upside-Down fork, Ø 35 mm at the front. The rear uses XACT WP mono shock. Fork-seal condition and rear linkage play are the two things worth checking before buying used.

Final drive maintenance

The 65 SX uses chain final drive, which is cheap to replace but needs regular cleaning, lubrication and tension checks to get a full service life out of the sprockets.

Frame & chassis check

Built around a Chrome-molybdenum steel central-tube frame, the 65 SX's chassis is straightforward to inspect: look for corrosion, cracks or repair welds around stress points like the head-stock and swingarm mounts.

Low-speed handling

53 kg keeps the 65 SX easy to move around in tight spaces, car parks and on the stand alike.

65 SX - Buying & Maintenance Guide

What to check before buying

Before handing over money for a used 2023 KTM 65 SX, cover the fundamentals: service book and oil change history, chain and sprocket wear, and any sign of oil weeping around the casings. Cold-starting it yourself tells you a lot - a healthy 65 SX should catch quickly and settle into a smooth idle.

Oil and filter changes

Nothing protects a 65 SX's engine like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). Match the viscosity grade to what the owner's manual specifies, not what's cheapest.

Carburetor upkeep

Deposits in the carbs are the usual culprit behind poor running on a stored 65 SX - strip and clean the float bowls before the first start. Pilot jets clog first and get overlooked most, so make a point of checking them.

2023 KTM 65 SX - Frequently Asked Questions

What engine does the 2023 KTM 65 SX have?

The 2023 KTM 65 SX uses a Single cylinder, two-stroke engine with 64.9 cc of displacement.

How much does the 2023 KTM 65 SX weigh?

The 2023 KTM 65 SX weighs 53 kg. This is the manufacturer's dry figure.

What is the fuel tank capacity of the 2023 KTM 65 SX?

The 2023 KTM 65 SX has a 3.70-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 61-74 km between stops.

Is the 2023 KTM 65 SX suitable for shorter riders?

The 2023 KTM 65 SX has a seat height of 750 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2023 KTM 65 SX have?

The 2023 KTM 65 SX uses Single disc at the front and Single disc at the rear.

What fuel system does the 2023 KTM 65 SX use?

The 2023 KTM 65 SX uses Carburettor, providing precise fuelling across the rev range and reliable cold-start behaviour.

What suspension does the 2023 KTM 65 SX have?

The 2023 KTM 65 SX uses XACT 35 WP Upside-Down fork, Ø 35 mm up front and XACT WP mono shock at the rear.

KTM 65 SX Spec Evolution

The KTM 65 SX was produced across 20 model years (2003-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2021	2022	2023
Wet Weight	-	-	-	-	-	-	-	-	-	173.0 kg / 381.4 lbs	-	112.0 kg / 246.9 lbs	-	-	-	-	-	-	-	-
Dry Weight	55.6 kg / 122.6 lbs	55.6 kg / 122.6 lbs	55.6 kg / 122.6 lbs	55.6 kg / 122.6 lbs	55.6 kg / 122.6 lbs	55.6 kg / 122.6 lbs	55.6 kg / 122.6 lbs	55.4 kg / 122.1 lbs	55.4 kg / 122.1 lbs	55.4 kg / 122.1 lbs	55.5 kg / 122.4 lbs	55.5 kg / 122.4 lbs	55.5 kg / 122.4 lbs	53 kg / 116.8 lbs	53 kg / 116.8 lbs	53 kg / 116.8 lbs	53 kg / 116.8 lbs	53 kg / 116.8 lbs	53 kg / 116.8 lbs	53 kg / 116.8 lbs
Engine Detail	-	-	-	-	-	-	-	-	-	Reed intake and exhaust control	Reed intake.	Reed intake.	Reed intake.	Reed intake.	Reed intake.	Reed intake	Reed intake	-	-	-
Engine Type	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke	Single cylinder, two-stroke
Seat Height	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	725 mm / 28.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.	750 mm / 29.5 in.
Fuel Capacity	3.40 litres / 0.90 gallons	3.30 litres / 0.87 gallons	3.30 litres / 0.87 gallons	3.30 litres / 0.87 gallons	3.30 litres / 0.87 gallons	3.30 litres / 0.87 gallons	3.30 litres / 0.87 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 gallons	3.50 litres / 0.92 US gallons	3.50 litres / 0.92 US gallons	3.50 litres / 0.92 US gallons	3.70 litres / 0.98 US gallons
Displacement (cc)	64.85 cc	64.89 cc	64.90 cc	64.90 cc	64.90 cc	64.90 cc	64.90 cc	64.90 cc	64.90 cc	64.90 cc	64.85 cc	64.85 cc	64.85 cc	64.85 cc	64.85 cc	64.85 cc	64.9 cc	64.9 cc	64.9 cc	64.9 cc
Ground Clearance (in.)	11.4 inches	11.4 inches	11.4 inches	11.4 inches	11.4 inches	11.4 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches	11.0 inches

Key Specifications

Engine

Single cylinder, two-stroke

Power

Not published by manufacturer

Torque

Not published by manufacturer

Top Speed

Not published by manufacturer

Weight

53 kg / 116.8 lbs

Fuel Capacity

3.70 litres / 0.98 US gallons

Full 2023 KTM 65 SX Specifications

Colours Orange/white/grey

Ground Clearance (in.) 11.0 inches

Ground Clearance (mm) 280 mm

Seat Height 750 mm / 29.5 in.

Wheelbase 1270 mm / 50.0 in.

Dry Weight 53 kg / 116.8 lbs

Fuel Capacity 3.70 litres / 0.98 US gallons

Stroke 2-stroke

Engine Type Single cylinder, two-stroke

Displacement (ci) 3.96 cubic inches

Displacement (cc) 64.9 cc

Bore x Stroke (in,) 1.8 x 1.6 inches

Bore x Stroke (mm) 45.0 x 40.8 mm

Fuel System Carburettor

Engine Lubrication Mixture oil lubrication

Ignition AET digital

Starter Kick

Clutch Wet, multi-disc clutch, Formula hydraulics

Final Drive Chain (final drive)

Gearbox 6-speed

Primary Drive 1/2 x 1/4´ chain

Frame Type Chrome-molybdenum steel central-tube frame

Suspension - Front XACT 35 WP Upside-Down fork, Ø 35 mm

Suspension - Rear XACT WP mono shock

Rake 25.5°

Wheel Travel - Front 215 mm / 8.5 in.

Wheel Travel - Rear 270 mm / 10.6 in.

Brakes - Front Single disc

Brakes - Rear Single disc

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.