REX Black Diamond Chain Lube

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.

• Updated version 2 formula

• Higher wax content, contains Black Diamond Hot Wax melted in
• Therefore has improved compatibility with Rex hot wax
• PFAS-free, solvent-free

Redesigned Second-Generation Black Diamond Chain Lube

The updated second-generation Black Diamond chain lube utilizes innovations developed in hot wax lubrication. A higher wax content has been achieved by melting the maximum amount of Rex hot wax into the formula. The new version now combines the previously separate e-bike version into a single product. The best lube in its class with revolutionary durability. Save money because your chain lasts longer!

The King of Chain Lubes – Proven Superior Lubrication Performance

Rex Black Diamond is one of the most researched chain lubes on the market. Wheel Energy Oy’s laboratory tests have confirmed its friction level to be among the lowest in the industry. Additionally, Black Diamond has broken records in Australia’s most respected Zero Friction Cycling tests, which measure the impact of chain lubes on chain wear in long and demanding tests simulating both road and off-road conditions.

Currently, Black Diamond is the longest-lasting chain lube on the market based on single-application durability tests.

A low friction level and minimal chain wear ensure an efficiently functioning drivetrain in all conditions. Save watts and reduce bike maintenance costs!

An Unprecedented Combination of Dry and Wet Condition Performance

Achieving the lowest possible friction in a chain lube has traditionally required sacrificing weather resistance. So-called wet lube chain lubes have often been energy-draining and dirt-collecting. Rex Black Diamond combines world-class lubrication performance with exceptional weather resistance in an unprecedented way. Successfully tested in demanding race conditions both on trails and on the road.

Solvent-Free, Non-Evaporating, Undiluted

Most chain lubes on the market contain volatile solvents or even water. This is an effective way to cut manufacturing costs, but at Rex, we took a different approach.

Every drop of Rex is 100% lubricant—everything you apply to your chain stays there and does not evaporate into the air. As a result, a small, easy-to-carry bottle provides approximately 30 lubrication cycles.

Apply a drop per link, and you’re ready to ride!

Tip for racing:

Black Diamond chain lube does not require any drying time and the bottle is small, so it’s a perfect mid-race top-up for ultra distance racing in demanding conditions. (i.e. Unbound XL). Adding Black Diamond lube onto a hot waxed chain is a perfect match, because they both contain the same wax and lubricating additives. Just remember to clean the chain thoroughly before next hot waxing, but that will probably be needed anyway if the conditions are such hard that a mid-race lubrication is needed. For daily use, Black Magik Drip Wax is a better top-up lubricant choice.