Since last year 2025, Bihr has become the official distributor of the EK Chain range of chains in our country. The company has, among others, the models of the Japanese brand ThreeD RV/3D and EK Chain RRS and SRX2, three proposals that combine resistance, durability and reliability for those who enjoy off-road to its fullest.
EK Chain range in detail
Mud, ruts, loose stones and kilometers of mountain ahead. The enduro gives no respite, much less the mechanics. Between sudden accelerations, changes in terrain and days that push the motorcycle to the limit, the transmission becomes a key piece to continue moving forward without setbacks. And when the asphalt is far away, a breakdown can ruin the entire adventure.
To meet these demands, Bihr It has a wide range of products, among which the EK Chain range of chains stands out. In this context ThreeD and EK Chain offer different technical solutions to respond to each way of experiencing enduro, from the most competitive to the most adventurous. And if there is a scenario where mechanics are truly put to the test, that is competition.
EK Chain maintains a close connection with this world and collaborates with pilots such as Teodor Kabakchievwinner of the demanding Roof of Africa in 2026. In rally-raid, Lorenzo Santolino has also left his mark with his victories in the Baja Aragón and the Carta Rallye. Two drivers, three wins and a good example of the mechanical demand that characterizes great off-road competitions.
ThreeD VR/3D: EK Chain’s premium bet
The ThreeD 520RV/3D represents the premium commitment of Japanese engineering for enduro and supermotard competition. Its innovative three-dimensional design, developed through precision forging, incorporates beveled plates and perforated pins that allow weight to be reduced without compromising robustness.
An engineering work that also stands out for its aesthetics, recognized with the prestigious Good Design Award. But behind its golden finish there is much more than design. With a tensile strength of 39.6 kN and NX-Ring seals, developed to preserve internal lubrication and promote durability, this chain is prepared to face the most demanding off-road conditions.
EK Chain RRS: “designed to respond to the most demanding use”
The EK Chain 520RRS is committed to a super-reinforced construction, with a rtensile strength of 38.4 kNdesigned to respond to the most demanding use in both disciplines. Its NXS-Ring technology helps extend the life of the chain and allows it to reduce its width.
In this way, space is gained between the transmission and the tire, something especially important in supermoto. In addition, its perforated interior plates help reduce the weight of the set. Robustness, durability and an optimized construction for those who demand a lot from their motorcycle, on and off the asphalt.
EK Chain SRX2: “reinforced standard construction”
Enduro is not always measured against the stopwatch. Sometimes, the best plan is to get lost on trails, link paths and accumulate kilometers until the day is over. For those who enjoy that freedom, the EK Chain SRX2 relies on a reinforced standard construction, which combines robustness, durability and versatility to face different terrains and driving styles.
With a tensile strength of 37.8 kN and QX-Ring sealsdesigned to promote internal lubrication and reduce wear, the SRX2 is prepared to accompany the rider for many kilometers. In addition, it is available in two configurations: clip closure for off-road use and riveted closure for road and off-road.
Two alternatives for those looking for a reliable and resistant transmission, both on their escapades through the mountains and on routes that combine dirt and asphalt. With the ThreeD and EK Chain ranges, the chain occupies the place it deserves in the tuning of any off-road motorcycle.
For more information and details about the EK Chain range of chains, or any other product from the Japanese firm, you can consult directly on the official Bihr website, where you can find all the references and their updated stock, as well as a compatibility list so that both distributors and the general public can verify that the chain is suitable for their motorcycle model.
