REX BLACK DIAMOND
SUPREME PERFORMANCE IN DRY AND WET
LONGEST LASTING EVER
CHAIN LUBE IN INDEPENDENT LABORATORY TESTING.
Rex Black Diamond has been thoroughly tested in independent testing laboratories on two continents. In tests conducted by Zero Friction Cycling (Australia) and Wheel Energy (Finland), Black Diamond was tested to be the longest lasting chain lube ever, and also one of the lowest friction chain lubricants.
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.
THE BEST LUBE CHOICE FOR INDOOR CYCLING
ENTIRE ZWIFT SEASON WITH A SINGLE LUBRICATION?
NO PROBLEM!
Black Diamond makes your chain silky smooth and silent. In indoor cycling, it is possible to ride over 5000 kilometers with a single lubrication, before the chain wear starts increasing. No other lubricant on the market matches the lubrication performance of Black Diamond.
THE BEST LUBE CHOICE FOR E-BIKES
LESS TIME AND MONEY SPENT IN SERVICE
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.
Friction and wear go hand in hand. By using the Rex Black Diamond, you will significantly reduce the wear and tear on the transmission of your electric bike. Components need to be replaced less often, and you can focus on riding your bike instead of replacing drivetrain components. The total savings during the driving season can be several hundred euros. The total running costs of the bike are reduced and the chain lube pays for itself many times over.
BLACK DIAMOND
ULTRASONICALLY TREATED IN REX R&D LAB
The secret of our new lube are the Black Diamond particles that are mixed into the lube in a time-consuming ultrasonication process at our factory’s Racing Service lab.
The Black Diamond particles significantly improve the properties of the lube: Lower friction, lower wear and increased rain resistance.
In continuous metal-to-metal contact that occurs in drivetrain while riding, the particles form an ultra-thin and hard layer that minimizes friction and wear, and is also waterproof.
Black Diamond reaches full lubrication performance without any drying time or run-in period. In tests conducted by Zero Friction Cycling, Black Diamond demonstrated excellent penetration capabilities when applied as per our instructions.
EDITOR'S CHOICE
IN THE WORLD'S LARGEST BICYCLE-RELATED BLOG
Bikerumor.com, the world’s largest cycling tech blog, picked Rex Black Diamond chain lube as one of the top new products of 2019!
RAIN RESISTANT
NEXT LEVEL COMBINATION OF DRY AND WET WEATHER PERFORMANCE
Previously, seeking for the lowest possible friction in a chain lube has meant sacrificing all-weather performance. So-called “wet” lubes have traditionally been very energy-stealing.
Rex Black Diamond combines test-winning friction levels with strong weather resistance in a previously unseen way. Black Diamond has been tested in demanding race conditions by our elite athlete team. The true king of chain lubes!
N-KINETIC™ WAX
FEATURING THE LATEST RACE SKI WAX TECHNOLOGY
We have upgraded the wax blend used in Black Diamond lube to the same Rex N-kinetic™ technology that we is used in our best cross-country ski waxes. The slightly lower viscosity results into lower friction and better lube penetration into the chain. Rex is well known for its world cup level fluorinated ski waxes and is an expert in paraffin wax-based applications with six decades’ worth of experience.
WAX BASED
SOLVENT-FREE, NON-VAPORIZING, UNDILUTED
Adding solvent or water to a chain lube is generally thought to be a great way to reduce manufacturing cost and giving the manufacturer a better margin. At Rex, we think otherwise. Every drop you apply on the chain is 100% lubricant and not something that will evaporate into the air. Unlike with most chain lubes, there is no need to wait until the solvent evaporates before you can ride your bike.
- UP TO 30 WAXINGS FROM A SINGLE BOTTLE
- UP TO 1000 KM WITH ONE WAXING
DETAILED INSTRUCTIONS
FOR ACHIEVING THE BEST LUBRICATION PERFORMANCE
Clean and degrease the chain thoroughly using a detergent like Rex Chain Cleaner, a chain cleaning device, or brush. Rinse well with water and let dry completely. Shake the bottle well and begin applying lube 1 drop per roller while pedaling backward. Use fingers to smoothen out and work the lube into rollers while backpedaling at least 3-4 revolutions. Repeat applying 1 drop per roller, using the same method as above. Wipe off excess lube from the surface to avoid excess dirt build-up. Only the lubricant in the inside of the chain matters for lubrication, and excess lube on the outer surface will just attract contamination.
RELUBRICATION
AFTER RIDING IN DAY-TO-DAY USE
Wipe the the chain with a cloth or tissue until it appears clean. If the chain still sounds quiet and feels smooth, there's no need to apply more lube. With Black Diamond, less is more as demonstrated in tests by Zero Friction Cycling. Apply lube 1 drop per roller like instructed above. Thorough cleaning is only needed if the chain extremely contaminated. Depending on conditions, typical relubrication interval is usually 50-1000 km.