Product overview
The Tsubaki Road Chain 525 RQ2 (108 links, part number 55250525108) is a premium X-ring sealed drive chain for road motorcycles, engineered to deliver low friction, long service life and stable power transfer for machines up to 150 combines the durability of traditional O-ring chains with reduced running resistance and a high-quality gold finish suited to modern street and sport bikes.
Key features
- Road-specific 525 pitch X-ring chain designed for mid to high performance street motorcycles.
- 108-link configuration suitable for many OEM-style 525 final drive setups where this length is specified.
- RQ2 series chain, offering a balanced mix of durability, weight and running efficiency for real-world daily and sport riding.
- Low-friction X-ring sealing minimizes drag compared to conventional O-ring chains while retaining effective internal lubrication for extended wear life.
- Gold & gold (G&G) finish outer plates for enhanced corrosion resistance and a premium appearance.
- Pre-stretched construction to reduce initial elongation after installation, helping the chain hold its adjustment longer.
- Hollow rivet (ZJ) master link included for secure closure with standard chain riveting tools.
- High tensile strength (around 45.1 kN average) for reliable performance under strong acceleration and braking loads.
- Recommended for motorcycles up to 150 HP, covering a broad range of middleweight and larger road bikes.
Technical specifications
| Brand | Tsubaki |
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| Series | RQ2 Road |
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| Chain type | Sealed X-ring drive chain |
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| Pitch | 525 (5/8" x 5/16") |
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| Number of links | 108 links |
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| Part number (MPN) | 55250525108 |
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| Color / finish | Gold outer plates (G&G) |
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| Seal type | Low-friction X-ring |
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| Master link type | Hollow rivet (ZJ) type pin link |
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| Average tensile strength | Approx. 45.1 kN |
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| Recommended engine output | Up to 150 HP (road use) |
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| Primary application | Road motorcycles (naked, sport, sport-touring and similar) |
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Benefits in everyday use
- Reduced transmission losses through X-ring sealing and precise manufacturing, helping more engine power reach the rear wheel.
- Extended service life thanks to effective sealing of internal lubrication and wear-resistant construction.
- Stable chain tension resulting from pre-stretching, which limits early break‑in elongation.
- Clean, premium look with gold-finished link plates that complement modern performance motorcycles.
- Secure installation using the supplied hollow rivet master link, compatible with common professional chain tools.
Typical applications
The Tsubaki 525 RQ2 108-link chain is intended for modern road motorcycles that use a 525 pitch, sealed final drive chain within the recommended power is commonly specified for mid-displacement and larger naked, supersport and sport-touring models where a 108-link 525 chain length is required by the manufacturer.
Specific model compatibility (example OEM-style applications)
Based on Tsubaki OEM-style chain kits using part number 55250525108, this chain length and specification is used as an original-style replacement on the following Triumph models:
| Brand | Model | Year |
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| Triumph | Daytona 600 | 2003–2004 |
| Triumph | Speed Four 600 | 2003–2006 |
| Triumph | Daytona 650 | 2005 |
In addition to these applications, the chain can be used on many other motorcycles that require a 525 pitch, 108-link sealed road chain within the specified performance range, provided the final drive ratio and length match the manufacturer’s original specification.
