PBI 277X-21-520 520 Pitch Sprocket Conversion Kit

The PBI 277X-21-520 sprocket is engineered for riders converting to 520-pitch chain drive systems, offering a premium balance of strength and weight savings. Precision-machined from aerospace-grade 7075 T6-51 aluminum, this sprocket delivers exceptional performance for high-stress motorcycle applications.

Key Features:

• Manufactured from 7075 T6-51 aluminum for superior strength-to-weight ratio
• Exceeds steel sprockets in tensile, yield, and shear strength characteristics
• Significantly lighter than steel to reduce unsprung weight and improve suspension response
• Machined from full-thickness aluminum billet for maximum durability
• 21-tooth configuration optimized for 520-pitch chain systems
• Precision tooth profile ensures smooth power transfer and extended chain life

Important: Sprockets are sold individually. A complete chain-drive conversion requires ordering both front and rear sprockets plus a compatible 520-pitch chain. Verify tooth count compatibility with your specific motorcycle model and desired gearing ratio before ordering.

PBI sprockets are trusted by racers and performance enthusiasts who demand components that can withstand extreme conditions while minimizing rotating mass for improved acceleration and handling.