EK

EK Motorcycle Chains – Racing & Street Chains Made in Japan. EK Enuma Chain: High-Performance Japanese Motorcycle Chains.

EK Chain (Enuma Chain) is one of Japan’s leading manufacturers of motorcycle chains for street, sport, racing and off-road applications. Founded in Japan in 1941, Enuma built its reputation through continuous innovation in motorcycle drivetrain technology and, in 1974, introduced the world’s first sealed O-Ring motorcycle chain.

Today, the EK motorcycle chain range includes solutions for small and mid-size motorcycles, supersport bikes, high-performance motorcycles, enduro, motocross and racing applications. Different chain sizes are available, including 420, 428, 520, 525 and 530, with specific versions engineered for different power levels, riding conditions and durability requirements.

At Omnia Racing, you can choose the right EK chain for your motorcycle according to chain size, number of links, seal technology, application and color, whether you are replacing the original drivetrain or building a performance-oriented transmission setup.

EK ZVX3: Chains for Sport and High-Performance Motorcycles

The EK ZVX3 series is the brand’s high-strength solution for powerful street and high-performance motorcycles.

The range includes 520ZVX3, 525ZVX3 and 530ZVX3, together with the 428ZVX. According to the current EK technical catalog, ZVX3 chains feature NX-Ring technology, while the 428ZVX uses QX-Ring seals. Inner plates also feature weight-reduction holes designed to reduce mass while maintaining excellent strength.

The range extends to the 530ZVX3, specified by the manufacturer for street motorcycles up to 1400cc, while the 520ZVX3 and 525ZVX3 cover applications up to 1200cc and 1300cc respectively. Compatibility should always be checked for the specific motorcycle model and year.

EK ZVX3 motorcycle chains are therefore an excellent choice for superbikes, hypersport motorcycles, sport-tourers and powerful naked bikes, where strength, rigidity, durability and reduced friction are essential.

EK NX-Ring and QX-Ring Technology

One of the key features of EK chains is the development of advanced sealing systems designed to retain lubricant inside the chain joints while helping prevent dirt and contaminants from entering.

Depending on the series, EK uses NX-Ring and Quadra-X Ring (QX-Ring) technology, developed to provide an effective combination of low friction, durability and smooth operation.

This allows riders to choose a sealed EK motorcycle chain suitable for everything from everyday street riding to high-performance sport motorcycles.

EK SRX2: Performance Motorcycle Chains for Street Use

The EK SRX / SRX2 family offers a versatile solution for riders looking for a high-performance motorcycle chain for street use, covering applications from smaller motorcycles to more powerful road bikes.

The range includes models such as 420SRX, 428SRX2, 520SRX2, 525SRX2 and 530SRX2, making it possible to select the appropriate drivetrain solution according to motorcycle specifications and intended use.

The SRX series is an excellent choice for riders who want to replace the original chain with an EK product offering a balanced combination of strength, durability, low weight and smooth operation.

EK MVXZ and MVXZ2: Quadra-X Ring Motorcycle Chains

The EK MVXZ and MVXZ2 series are designed for street applications and represent some of the best-known product families in the EK motorcycle chain range.

Available in 520, 525 and 530 sizes, these chains cover different applications according to motorcycle displacement, power and drivetrain specifications.

Their sealing technology and construction are engineered to provide long service life and consistent performance, making EK MVXZ chains an excellent replacement option for the original chain on many street motorcycles.

EK SRO: Quality and Durability for Everyday Riding

For riders looking for an EK chain with an excellent balance between price, quality and durability, the SRO family provides solutions for a wide range of motorcycle types and engine sizes.

The range includes 420SRO, 428SROZ, 520SRO6, 525SROZ2 and 530SROZ2, covering applications ranging from smaller motorcycles to more powerful street bikes.

EK SRO motorcycle chains are particularly suitable for riders who prioritize reliability, durability and value for money when replacing their final-drive chain.

EK ThreeD: Premium and Racing Motorcycle Chains

At the premium end of the EK range is ThreeD, developed to provide sophisticated drivetrain solutions for sport motorcycles and demanding performance applications.

The range includes several families such as ThreeD L Series, ThreeD Z Series, Racing Series, RV and MX, with products dedicated to street motorcycles, supersport bikes, off-road motorcycles and racing.

The current range includes models such as 520Z/3D, 525Z/3D and 530Z/3D, together with specialized racing and off-road versions.

For riders looking for a premium EK motorcycle chain, ThreeD represents one of the most advanced product families developed by the Japanese manufacturer.

EK Racing Chains for Track, Motocross and Competition

EK technology is not limited to street motorcycles. The catalog also includes racing chains for road racing, motocross and competition use, with products developed with particular attention to weight, strength and drivetrain efficiency.

On selected racing chains, EK uses its CRH (Chromium Carbide) technology on the pins, designed to improve resistance to wear and impact. This technology is used on products developed for applications including motocross, road racing and drag racing.

Riders preparing a motorcycle for competition can therefore choose a dedicated EK racing chain according to the specific discipline, motorcycle and drivetrain requirements.

Lightweight Plates and EK Chain Technology

Several EK motorcycle chains feature lightening holes in the chain plates. According to Enuma, this design can reduce overall chain weight by approximately 3% without compromising tensile strength, while also helping with heat dissipation and reducing the accumulation of dirt and mud.

This technology is particularly interesting for sport and racing motorcycle chains, where reducing drivetrain mass can contribute to overall efficiency and performance.

EK SLJ Screw Type Master Link

Another distinctive EK innovation is the SLJ Screw Type Master Link, a patented screw-type connecting link designed to allow installation without using a traditional chain riveting tool.

According to EK, the system can be installed using an 8 mm wrench and pliers.

In the current range, the SLJ system is available for selected ZVX chains in 520, 525 and 530 sizes, providing a practical installation solution for compatible applications. The manufacturer's installation instructions must always be followed.

EK Colored Chains: Gold, Black, Red, Blue, Green and Orange

A motorcycle chain is no longer just a functional drivetrain component. EK offers a wide selection of colored motorcycle chains that allow riders to customize the appearance of their motorcycles.

Depending on the chain series, finishes include Gold, Black/Gold, Red/Silver, Blue/Silver, Green/Silver and Orange/Silver, along with additional finishes available across the EK range.

You can therefore choose an EK gold, black, red, blue, green or orange motorcycle chain and match it with your sprockets, wheels and other motorcycle accessories.

Which EK Chain Should You Choose for Your Motorcycle?

Choosing the correct EK motorcycle chain is not based on engine displacement alone. You should always check the motorcycle model and year, chain pitch, required number of links, engine power, street or racing use and the specifications recommended by the motorcycle manufacturer.

The main EK ranges can generally be identified as:

• ZVX / ZVX3 – high-strength chains for sport and high-performance motorcycles
• MVXZ / MVXZ2 – sealed chains for a wide variety of street applications
• SRX / SRX2 – balanced performance, durability and street usability
• SRO / SROZ – reliability and excellent value for money
• ThreeD – premium high-performance motorcycle chains
• Racing – specialized solutions for track and competition use
• Off-Road / MX – dedicated chains for motocross and off-road motorcycles

Compatibility must always be verified for the specific motorcycle model and year before purchasing.

Buy EK Motorcycle Chains Online at Omnia Racing

At Omnia Racing, you can find a wide selection of original EK motorcycle chains, from solutions designed for everyday street riding to high-performance chains for superbikes, racing motorcycles and off-road applications.

Choose your EK 420, 428, 520, 525 or 530 chain according to your motorcycle specifications and complete your drivetrain with compatible front and rear sprockets.

Buying an EK motorcycle chain from Omnia Racing means choosing a product developed by a Japanese drivetrain specialist, with technologies engineered to deliver strength, smooth operation, durability and performance.

EK Chain combines Made in Japan manufacturing, technological innovation and racing expertise, offering a comprehensive range for riders looking for a reliable street drivetrain or maximum performance on the track.