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The RK Excel GB415HRU-RL Gold Rivet Master Link is designed for use with RK 415 HRU racing chains and high-performance motorcycle applications. Featuring RK’s proprietary Ultra Thin U Seal Ring technology, this master link supports a sealed chain design with reduced weight compared with conventional sealed chains. The gold finish provides a distinctive appearance while maintaining the precise fit required for reliable chain assembly.
RK Excel HRU Racing Chain components are engineered for race use, where minimizing chain elongation and maintaining horsepower transmission efficiency are important. The Ultra Thin U Seal Ring design uses a seal thickness of less than 50% of a common O-ring seal, helping reduce friction and rotating mass without sacrificing sealed-chain performance. This master link is intended for professional installation and should be selected to match the correct RK 415 HRU chain series.
Features:
- Brand: RK Excel
- Part Number: GB415HRU-RL
- Application: RK 415 HRU racing chain series
- Master Link Type: Rivet-style connection
- Finish: Gold
- Seal Technology: Ultra Thin U Seal Ring compatible design
- Racing Use: Intended for racing applications only
- Performance Focus: Helps support low chain weight and reduced elongation
- Compatibility: For 415-size RK HRU racing chains; verify chain and master link specifications before installation
Installation should be completed with the correct riveting tool and according to RK Excel service instructions. Inspect the chain, rivet link, and surrounding components before use, and replace worn or damaged parts as needed.

