RFX FXRS 40-51 ALBK Armalite Rear Sprocket 51T Black for BMX and Mountain Bikes

The RFX FXRS 40-51 ALBK Armalite Rear Sprocket is engineered for durability and performance in BMX and mountain biking applications. Constructed with a CNC-machined 7075 aerospace aluminum inner ring, this sprocket offers exceptional strength while maintaining a lightweight profile. The outer ring features high-quality HCS material, providing a robust and wear-resistant surface suitable for demanding riding conditions. The hex-drive location between the inner and outer rings ensures secure attachment and precise engagement, enhancing overall drivetrain reliability. CAD-designed profiles contribute to reduced weight without compromising structural integrity, enabling smoother acceleration and efficiency during rides. The sprocket incorporates innovative mud clearing grooves that significantly reduce wear and prevent mud buildup, ensuring consistent performance in muddy or dusty environments. Its rigid design enhances torsional strength, allowing for better power transfer and durability during aggressive riding. Finished with a sleek black color and anodized for a factory bike look, this sprocket combines style with function, making it an excellent upgrade for serious riders seeking reliability and performance.

Features:

• CNC machined 7075 aerospace aluminum inner ring for strength and lightness

• HCS outer ring for durability and wear resistance

• Hex-drive location between inner and outer rings for secure attachment

• CAD-designed profile to optimize weight and performance

• Mud clearing grooves to reduce wear and prevent mud buildup

• Rigid design enhances torsional strength for improved power transfer

• Anodized black finish provides a factory-style appearance