Please allow a delivery delay of 5-10 business days on orders which include backordered items.

Specifications:

• JKA certified for Japanese's 250 Keirin Racing (12-16t)
• Hardened 4130 Cr-Mo steel
• Precision CNC machined
• Gen3 tooth profile 
• Good durability 
• 12-20 tooth
• 1/8” chain width
• Standard 1.37"x24" threads
• Sprocket offset: 6mm (flange to tooth center)
• Pair with Velobike Sprocket Spacers for greatest chain line efficiency