Overview
Engineered for demanding offroad use, the Tsubaki Offroad Chain 520 MXE 118 links (code 55251520118) is a sealed X-ring drive chain designed for modern enduro and motocross motorcycles that use a 520 pitch final MXE series combines high tensile strength, low friction and long service life in muddy, sandy and dusty conditions.
Key features
- Enduro-focused offroad chain developed for high torque applications.
- X-ring sealing for reduced friction and extended wear life compared to conventional O-ring or non-sealed chains.
- Gold coloured outer plates for corrosion resistance and a premium appearance.
- Pre-stretched at the factory to minimise initial elongation after installation.
- Optimised for approximately 125–650 cc offroad motorcycles, including powerful four-stroke enduro and motocross models.
- Supplied in 118-link length to suit many standard 520 enduro drivetrains.
- Includes both clip-type and rivet-type master links for flexible installation preferences.
Construction and technology
- Low-friction X-rings keep factory grease inside the pin and bushing area while sealing out water, mud and abrasive dirt.
- Heat resistant sealing material maintains elasticity under extreme temperature changes during race use.
- Precision machined inner bushings and rollers reduce rotational resistance and improve power transfer to the rear wheel.
- Surface treated outer plates help protect against rust and corrosion in year-round offroad conditions.
- Carbonised pins with hardened surface for improved fatigue strength and resistance to wear.
- Four-sided riveted pins for secure plate retention and high resistance to chain separation under shock loads.
Technical specifications
| Brand | Tsubaki |
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| Series | MXE offroad |
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| Manufacturer code | 55251520118 |
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| Chain pitch | 520 |
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| Chain type | X-ring sealed drive chain |
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| Number of links | 118 |
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| Colour | Gold outer plates |
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| Primary application | Enduro and offroad riding, also used for motocross training |
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| Recommended displacement range | Approximately 125–650 cc offroad motorcycles |
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| Connecting links included | 1 clip-type master link and 1 rivet-type master link |
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| Drive system compatibility | For motorcycles equipped with 520 pitch front and rear sprockets |
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Typical use cases
- Enduro competition stages and long-distance events with sustained exposure to mud, sand and water crossings.
- Motocross practice and training on mid-size and large displacement dirt bikes where durability and low maintenance are important.
- Offroad riders seeking a strong yet efficient 520 conversion chain for higher torque single-cylinder or twin-cylinder engines.
- Rally and cross-country racing where consistent performance and resistance to elongation are critical over many hours of riding.
Compatibility notes
The Tsubaki 520 MXE 118-link chain is intended for motorcycles that use a 520 pitch drive system and require approximately 118 links in the final length can be fine-tuned by removing links to match specific sprocket sizes and wheelbase chain must always be paired with correctly sized 520 front and rear sprockets.
