KTM 125 SX 2021

Find technical data, prices and reviews.

KTM 125 SX

Key Specification KTM 125 SX 2021

Engine and Drive Train

Bore54 mm
Stroke54.5 mm
StarterKick
Clutch TypeMultiplate in oil-bath
IgnitionKokusan
Transmission TypeGearshift
Displacement124.8 ccm

Suspension Front

Diameter48 mm
Travel310 mm

Suspension Rear

Shock absorberMonoshock
Travel300 mm

Chassis

Frame typeCentral tube

Brakes Front

Diameter260 mm

Brakes Rear

Diameter220 mm

Dimensions and Weights

Front tyre width80 mm
Front tyre height100 %
Front tyre diameter21 inch
Rear tyre width100 mm
Rear tyre height90 %
Rear tyre diameter19 inch
Wheelbase1485 mm
Seat Height950 mm
Dry Weight87.5 kg
Fuel Tank Capacity7.5 l

Price KTM 125 SX

Model year
Current average market prices

KTM 125 SX History

KTM 125 SX 2025

KTM 125 SX 2025

124.8 ccm

92 kg

$8,389.00avg. market price

KTM 125 SX 2024

KTM 125 SX 2024

124.8 ccm

92 kg

$7,775.00avg. market price

KTM 125 SX 2023

KTM 125 SX 2023

124.8 ccm

92 kg

$7,048.00avg. market price

KTM 125 SX 2022

KTM 125 SX 2022

124.8 ccm

87 kg

$6,497.00avg. market price

KTM 125 SX 2021

KTM 125 SX 2021

124.8 ccm

87 kg

$5,527.00avg. market price

KTM 125 SX 2020

KTM 125 SX 2020

124.8 ccm

87 kg

$4,838.00avg. market price

KTM 125 SX 2019

KTM 125 SX 2019

124.8 ccm

87 kg

$4,829.00avg. market price

KTM 125 SX 2018

KTM 125 SX 2018

124.8 ccm

87 kg

$4,496.00avg. market price

KTM 125 SX 2017

KTM 125 SX 2017

124.8 ccm

87 kg

$4,286.00avg. market price

KTM 125 SX 2016

KTM 125 SX 2016

124.8 ccm

87 kg

$3,997.00avg. market price

KTM 125 SX 2015

KTM 125 SX 2015

124.8 ccm

90 kg

KTM 125 SX 2014

KTM 125 SX 2014

124.8 ccm

90 kg

KTM 125 SX 2013

KTM 125 SX 2013

124.8 ccm

90 kg

KTM 125 SX 2012

KTM 125 SX 2012

124.8 ccm

90 kg

KTM 125 SX 2011

KTM 125 SX 2011

124.8 ccm

90 kg

KTM 125 SX 2010

KTM 125 SX 2010

124.8 ccm

90 kg

FAQ tires KTM 125 SX

Which tire dimensions do I need?
The tire dimension KTM 125 SX 2021 is front 80/100-21 and rear 100/90-19.
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FAQ KTM 125 SX

What is the current market price of the KTM 125 SX?
The current average market price of a KTM 125 SX, year of manufacture 2024, is 6,400 USD with an average mileage of 17 km.
Which one is better? KTM 125 SX or {AlternativeBrandModel}?
You can compare these two motorcycles here. You can find all pros and cons of the comparable model here.
How about the availability of the KTM 125 SX?
Compared to other Motocross bikes the availability is very good. There are very many KTM 125 SX bikes available on the market.
How stable is the price of a used KTM 125 SX? What about the price trend?
Looking at the year of manufacture 2008, the price stability of a KTM 125 SX was good compared to other Motocross bikes. The price trend was -13% in the first year, -14% in the second year and -5% in the third year.
How popular is the KTM 125 SX?
There is a very strong demand for a KTM 125 SX on the market. Test reports of this model are read on average often on the platform of 1000PS.
What is the data source for the content on this page?
The data comes from the online motorcycle magazine '1000PS'. 1000PS was founded in 2001. The company is based in Austria. Most of the content is published in German. However, the team also presents motorcycle test videos in English on YouTube. Here you can find 1000PS on Instagram.

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KTM 125 SX Pictures

Source: 1000PS

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1000PS Partner

LOUISContinental MotorradreifenSchuberthMotorex AGcalimoto GmbH