Honda CR125M 40T 520 chain 4 bolt pattern Rear Sprocket sku 6317

New old stock product.  Purchased from an old line Honda dealer who stocked lots of OEM and high quality replacement parts in the heyday of Japanese imports but is now closed.

520 chain 4 bolt installation at 6.6 cm on center .  "CT Alloy brand", marked hardened "blackaloy"

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