Would this work for a ktm 690 enduro r?

It will work in the 690R and it would be unlikely to create any problems, HOWEVER.... KTM specs the 10w60 for that engine so in theory they have designed the oil flow for the slightly thicker oil at high temperatures (i.e. the '60' vs the '50' in the designation). Without getting into the technical details, the 10w60 oil has about 30% more viscosity at VERY high temperatures, say 100 degrees C, than the 10w50. If you ride for prolonged periods at high speed, in high temp environments, or at prolonged low speed where the bike is prone to boiling over then it is very likely that paying the extra $5 for the 10w60 as the KTM engineers intended is worth it. If it was my expensive bike I would spend the extra $5 anyway. Here is the link to the same oil in the 10w60 variant: https://www.amazon.com/dp/B00JAHDIBC/ref=psdc_15719391_t2_B001GMAKZ6

Will this work for a 21 Husqvarana fc450?

yes it will i use it on my 2020 husqvarana fc450

For ktm sx250f 2019 I should bay 10w50 or 10w60 ???

Depends on the temp were you are riding and tour riding style. Refer to owners manual

Is this a 4 liter bottle?

I don't think that one is. Most 4 liter have a red picture and a screw top and most sellers indicate 4 liter

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Motorex Cross Power 4T Oil - 10W50-4L. 171-401-400

Motorex Cross Power 4T Oil - 10W50-4L. 171-401-400

Product ID: 11247618

Details

Brand
Motorex
Liquid Volume
4 liters
Package Information
Jug
SAE J300 Viscosity Grade
10W-50
Vehicle Service Type
Motorcycle

🔥Fully synthetic PAO & Ester base

🏍️Official KTM 4-stroke oil

🛡️Extreme temp & shear protection

698.54 DT

Duties & taxes included

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Description

🏁 Dominate the dirt with KTM’s #1 synthetic oil—because your ride deserves the best.

GENEROUS 4 L JUG - Ample volume for multiple oil changes, designed for serious riders who never settle.
WET CLUTCH CONFIDENCE - No slipping, no compromises—ensures smooth clutch engagement for flawless control on every ride.
KT MS TRUSTED CHOICE - Selected by KTM for all their 4-stroke motorcycles—join the elite riders who demand the best.
UNMATCHED ENGINE DEFENSE - Provides optimum wear protection even in the harshest, extreme temperature conditions—keep your motor running like new.
RACE READY SYNTHETIC POWER - Engineered for motocross & supercross 4-stroke bikes, delivering peak performance under pressure.

Motorex Cross Power 4T 10W50 is a fully synthetic, PAO and Ester-based high-performance engine oil specifically formulated for motocross and supercross 4-stroke motorcycles. Officially selected by KTM, it offers superior protection against engine wear, extreme temperature resilience, and prevents wet clutch slippage, all packaged in a convenient 4-liter jug trusted by over 1,000 riders worldwide.

Specifications

ASIN	B001GMAKZ6
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#11,474 in Automotive ( See Top 100 in Automotive ) #157 in Motor Oils
Brand	Motorex
Brand Name	Motorex
Compatible with Vehicle Type	Motorcycle
Container Type	Jug
Customer Reviews	4.8 out of 5 stars 1,008 Reviews
Global Trade Identification Number	07611197017523
Item Weight	7.8 pounds
Liquid Volume	4 liters
Manufacturer	Motorex
Manufacturer Part Number	82.4
Model Number	82.4
Number of Packs	1
Package Information	Jug
SAE J300 Viscosity Grade	10W-50
Size	4 liters
UPC	604633136442
Unit Count	135.3 Fluid Ounces
Vehicle Service Type	Motorcycle
Viscosity Level	Medium to High

Reviews

R**E

Expensive but worth it!

I always use motorex on all my KTM products and haven't ever had a motor go bad!

10.03.2025

A**O

Lo mejor para mi KTM

Excelente

20.05.2026

M**N

Motorex 4t oil

Reliable oil. My motor has a very small oil capacity. This oil keeps everything inside safe.

24.04.2026

H**.

Nice for KTMs

I like this oil for my KTM

19.02.2026

E**E

Motorex Oil

Superb Products! Packaged Well!!

5.02.2026

S**N

Best oil for you ktm

I have used this oil on both my 2017 350sfx and 2021 450 sfx, its expensive but cheaper then a new engine. I did a rebuild on my 350 after 140 hours no burning or scaring on the piston and jug carbon was very slight. Could have gone longer on the top end. Love the oil

15.11.2020

G**W

Great Quality

Always used this oil. What KTM recommends.

24.12.2025

A**N

As expected

Showed up on time and as expected

25.11.2025

M**E

Exactly what I ordered

Good product good price

12.02.2025

M**E

Buen servicio de entrega, magnífico aceite moto

Magnífico aceite a buen precio

9.10.2025

C**T

Great product and price

Great product. Great price

8.01.2023

J**I

Alles bestens!

13.07.2026

E**O

Buon olio motore

Olio da Moto consigliato da KTM comunque personalmente non ho notato differenze da altri oli motore di altre Marche

13.12.2025

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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5 days ago

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698.54 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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