SKU: 65701419656

Motul RBF 660 Racing DOT 4 Brake Fluid 500ml Fully Synthetic 101666

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Description

Motul RBF 660 Racing DOT 4 Brake Fluid 500ml Fully Synthetic 101666100% Synthetic Racing Brake Fluid DOT 4Very high boiling point: 325C 617FFor hydraulic actuated brake and clutch systemsTYPE OF USEFor all types of hydraulically actuated brake and clutch systems requiring non silicone synthetic fluid. Specially designed to withstand the extreme temperature generated by racing carbon and ceramic brakes while allowingminimized air entrance for brake cooling. Also suitable for conventional brakes with steel discs and

100% Synthetic Racing Brake Fluid – DOT 4
Very high boiling point: 325°C / 617°F
For hydraulic actuated brake and clutch systems
TYPE OF USE
For all types of hydraulically actuated brake and clutch systems requiring non-silicone synthetic fluid.
Specially designed to withstand the extreme temperature generated by racing carbon and ceramic brakes while allowing
minimized air entrance for brake cooling.
Also suitable for conventional brakes with steel discs and for conventional hydraulic clutch actuators.
Exceeds DOT 3 and DOT 5.1 standards requirements, except for viscosity at -40°C / -40°F.
PERFORMANCES
STANDARDS FMVSS 116 DOT 4
SAE J1703 / J1704
Extreme thermal resistance and stability:
MOTUL RBF 660 FACTORY LINE very high dry boiling point (325°C / 617°F) exceeds the requirements of the standards DOT 5.1 non silicone base (260°C mini / 500°F mini) and DOT 4 (230°C mini / 446°F mini), and therefore enables effective braking even in extreme conditions.
Allows better aerodynamic performance by reducing the need for brake cooling air scoops on vehicles.
Efficient when rainy:
MOTUL RBF 660 FACTORY LINE very high wet boiling point (205°C / 401°F) is superior than the requirements of the
standards DOT 5.1 non-silicone base (180°C mini / 356°F mini) and DOT 4 (155°C mini / 311°F mini), and therefore
enables to keep efficient braking in wet conditions.
Indeed, DOT 3, DOT 4 or DOT 5.1 brake fluids have the property of absorbing moisture from the air, which reduces their boiling points and increases the risk of “vapor lock” phenomena.
The wet boiling point is measured after moistening the product with 3% water in order to be representative of the state of the fluid after 1 year of use.
RECOMMENDATIONS
Drain interval: always according to manufacturers’ recommendations and to be tuned to your own use.
Avoid mixing with lower performance polyglycol-based brake fluids.
Do not mix with silicone (DOT 5 silicone base) or mineral base fluids (LHM).
Store brake fluid in its original container, tightly closed to prevent moisture absorption.
Aggressive chemical product if in contact with hands, paint or varnish.
If skin contact, rinse thoroughly with water.
PROPERTIES
Color Visual Amber
Viscosity at 100°C (212°F) 2.6 mm²/s
Viscosity at -40°C (-40°F) 1,698.0 mm²/s
Dry boiling point 325.0 °C / 617.0 °F
Wet boiling point 205.0 °C / 401.0 °F

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 65701419656

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Keen
Battle Creek, US
★★★★★ 5
Great for a growing kid
Size: Large, Color: Sky Blue, Size: Large, Color: Sky Blue
Good quality for a good price. My teen is outgrowing his medium clothes and into larges so it fit slightly big which I expected but that just means he should be able to wear it to his fall dance as well. Nice material, not see through at all even after dancing all night and sweating. Exact color blue as pictured. Very happy over all.
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Reviewed in the United States on May 12, 2026
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Fernando & TinaMarie
Phoenix, US
★★★★★ 5
Great shirt for the price.
Size: 4X-Large Big Tall, Color: Sky Blue
Shirt fit perfectly and was true to size. The material seems to be of a good quality for the price, and it is surprisingly light weight when worn. I use these as daily shirts, and have only used it once so far. Did well after washing and required little to no ironing out of the dryer. Very impressed with the item so far.
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Reviewed in the United States on February 1, 2026
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Jessi
Houston, US
★★★★★ 5
Perfect for my teenage son.
Size: Small, Color: Blue White Pinstripe
My son has worn this shirt many times to temple for bar mitzvah services. It’s soft doesn’t wrinkle easily and very comfortable for him to wear. He receives many compliments on it. This is a relatively thin shirt sizing was accurate. Fabric is what I would consider Nice quality. Color is spot on.
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Reviewed in the United States on January 26, 2026
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Austin
Phoenix, US
★★★★★ 4
Surprising quality for such a cheap item
Size: 4X-Large Big Tall, Color: Navy White Diamond Geo
Surprisingly good fit. The material is a bit thin and if you're wearing it on a cold day, I would recommend an undershirt. The collars could use a good starching for a more modern look. As it stands with an open jacket, the large collar makes it look a little dated. If you have 20 dollars and need a shirt you could certainly do worse.
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Reviewed in the United States on January 17, 2026
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Dane-Marie Baugh
Louisville, US
★★★★★ 5
Nice
Size: 3X-Large Big, Color: White
Good shirt for price
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Reviewed in the United States on April 24, 2026

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