Rex Black Diamond E-Bike Chain Lube

Longer life for e-bike drivetrain.
The longest lasting lube in the world as measured by Zero Friction Cycling. New e-bike optimized version is now available!

AMAZING LONGEVITY
OVER 1000 KM’S WITH A SINGLE APPLICATION
Zero Friction Cycling is the world’s leading chain
lubrication test laboratory, and it is trusted by all major
chain lube manufacturers. There are over 300,000 controlled
test kilometers from a comprehensive database of the
best lubricants on the market. To date, no lubricant has
remotely demonstrated the treatment longevity of Rex
Black Diamond, which outperformed competing lubricants
in tests, even when tested with an astonishingly long
lubrication interval of 1,000 km.
POWER AND TORQUE
WITH E-BIKES, LUBRICANT CHOICE MATTERS!
In electric bikes, chains and chainrings are subjected to
higher forces than usual. Small chainrings and sprocket
sizes, low cadence, and high power are a combination that
wears out the drivetrain quickly. By choosing the right
chain lubricant, the lifespan of your chains can be increased
up to six times when compared to average lubes on the
market.
Under load, the Black Diamond E’s nanoparticles
form an extremely durable and low-friction surface
layer on metal-to-metal contact surfaces, significantly
improving the lubricating properties. In addition to low
friction and low wear, Rex chain lubes’ ability to recover
from temporary interruptions in lubrication caused by
sand, water and dust is researched to be the best in its
category. Even when subjected to contamination, Rex
does not turn into an abrasive paste that quickly wears
out chains. This is due to Rex’s extensive knowledge of
dirt-repellent waxes and their additives.
ENHANCED COMPOSITION
SYNERGETIC ADVANCEMENTS WITH NANO TUNGSTEN
We took the recipe for Black Diamond and made it even
better for electric bikes in two ways: Nanotungsten
(WS2) improves the pressure resistance of the lubricant
and further reduces the level of friction. When used
in combination with our proprietary Black Diamond
nanoparticle technology, a synergistic effect is achieved.
The use of both additives at their optimal concentration
gives a result that is better than the sum of its parts. For
best performance, both nano additives are blended into
the lubricant in an ultrasonic process at our factory in
Hartola, Finland. As an additional spice, we added Rex
N-Kinetic™ hydrophobic polymers to the composition.
They give Black Diamond E better anti-corrosion
properties than our previous chain lubes, and improve
performance in very cold conditions.