ShimAno Chainring Sm-Cr80-a 104mm

Shimano Chainring SM-CR80-A 104mm

Product Overview

The Shimano SM-CR80-A is a professional-grade DXR alloy chainring designed for BMX racing. Built with top-level durability for single-speed applications, it features 104mm BCD 4-bolt compatibility and is available in multiple gear options optimized for competitive BMX performance.

Key Features

• DXR Alloy Construction – Proprietary Shimano alloy provides strength and durability for high-tension single-speed applications
• Professional BMX Design – Purpose-built for the demands of professional BMX racing
• 104mm BCD 4-Bolt Pattern – Compatible with standard BMX cranksets; enables straightforward chainring installation and replacement
• Single-Speed Optimized – Engineered specifically for fixed single-speed drivetrains requiring durability and precision
• Wide Gear Range – Multiple tooth count options accommodate different racing styles and track conditions
• Durable Construction – Resistant to wear and damage from high-tension BMX racing loads
• Precise Tooth Profile – Optimized geometry ensures reliable chain engagement and smooth power transfer
• Professional Racing Component – Top-level engineering and manufacturing standards for competitive racing

Technical Specifications

• Material: DXR alloy
• BCD: 104mm
• Bolt pattern: 4-bolt
• Application: Single-speed BMX racing
• Tooth count options: Multiple sizes available (check product options for specific sizes)
• Finish: Standard anodized

Compatibility & Ideal Use Cases

• 4-Bolt 104mm Cranksets – Compatible with standard BMX cranks using 104mm BCD 4-bolt pattern
• Professional BMX Racing – Purpose-built for competitive racing applications
• Single-Speed Drivetrains – Optimized for high-tension fixed single-speed systems
• Track and Street Racing – Suitable for both controlled track racing and street BMX applications
• Gear Selection – Multiple tooth count options for different racing preferences and track conditions
• Professional Riders – Top-level component for serious BMX racers
• Chain Compatibility – Works with standard 3/32" single-speed BMX chains

Build Requirements & Compatibility

• 104mm BCD 4-Bolt Crankset – Verify your crankset uses 104mm BCD 4-bolt pattern before ordering
• Single-Speed Chain – Use with 3/32" single-speed chain (sold separately)
• Proper Installation – Ensure bolts are tightened securely and evenly for reliable engagement
• Tooth Count Selection – Choose based on desired gearing and racing conditions

Important Notes

• Verify 104mm BCD 4-bolt crankset compatibility before purchasing
• Professional-grade component engineered for competitive BMX racing
• DXR alloy provides durability for high-tension single-speed racing loads
• Single-speed optimized; not designed for multi-speed drivetrain systems
• Multiple gear options available; select tooth count based on your racing style and preferences
• Proper installation and maintenance critical for reliable performance
• Professional Shimano engineering and quality standards