Regina Chain 137ZRT/011 525ZRT O-Ring Chain 110 Links

The Regina Chain 137ZRT/011 is a 525ZRT series O-ring sealed drive chain featuring 110 links, designed for high-performance motorcycle applications. Regina is a premium Italian chain manufacturer with decades of motorsport heritage, and the ZRT line represents their top-tier sealed chain technology built for durability and consistent power transfer.

Key Features:

• Chain Size: 525 pitch — a versatile, heavy-duty pitch widely used on sport, sport-touring, and naked motorcycles
• Link Count: 110 links standard length
• O-Ring Sealed: ZRT-series O-ring construction retains internal lubrication and seals out dirt, grit, and moisture for extended service life
• High-Tensile Side Plates: Precision-stamped side plates engineered for strength and fatigue resistance under demanding riding conditions
• Precision Rollers: Hardened roller pins and bushings minimize wear and reduce friction for smooth, quiet operation
• Corrosion Resistance: Surface treatments help protect against rust and environmental degradation

The Regina ZRT 525-110 chain delivers the durability and reliability expected from a premium OEM-quality replacement chain, making it an excellent choice for street, sport, and touring motorcycle applications requiring a 525-pitch drive chain.