Yamaha NOS YA-45 38T 530 chain 4 Bolt Tooth Rear Sprocket sku 6330

530 chain 6 bolt installation at 5.2 CM on center Light Alloy  marked as shown above New old stock product.  Purchased from an old line dealer who stocked lots of OEM and high quality replacement parts in the heyday of Japanese imports but is now closed. These sprockets are new and within +- 2 teeth of specified OEM sprocket sizes from Reputable Sprocket Charts.    larger  number of teeth give you faster acceleration.  smaller number of teeth give you more top speed. Email me with any questions as products are not returnable