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
UPC
604633136442
Vehicle Service Type
Motorcycle

🔥Fully synthetic PAO & Ester base

🏍️KTM-approved 4-stroke oil

🛡️Extreme temp & shear protection

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Description

🏁 Dominate every trail with KTM’s #1 synthetic 4T oil!

CLUTCH CONFIDENCE - Ensures zero wet clutch slippage for seamless power delivery.
ALL WEATHER WARRIOR - Maintains viscosity and protection from blistering heat to muddy trails.
KT MS TRUSTED CHOICE - Officially selected for all KTM 4-stroke motorcycles—join the elite riders.
UNMATCHED ENGINE DEFENSE - Delivers optimum wear protection even in the harshest off-road conditions.
RACE READY SYNTHETIC POWER - Engineered with premium PAO and Ester for peak motocross performance.

Motorex Cross Power 4T 10W50 is a fully synthetic, high-performance engine oil designed specifically for motocross and supercross 4-stroke motorcycles. Approved by KTM, it offers superior protection against engine wear, extreme temperatures, and clutch slippage, ensuring reliable power and durability in the toughest off-road racing conditions.

Specifications

ASIN	B001GMAKZ6
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#12,387 in Automotive ( See Top 100 in Automotive ) #166 in Motor Oils
Brand	Motorex
Brand Name	Motorex
Compatible with Vehicle Type	Motorcycle
Container Type	Jug
Customer Reviews	4.8 out of 5 stars 994 Reviews
Global Trade Identification Number	07611197017523
Liquid Volume	4 Liters
Manufacturer	Motorex
Manufacturer Part Number	82.40302
Model Number	82.403020
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

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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$223.37

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

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TrustScore 4.5 | 7,300+ reviews

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