Rear Sprocket for Honda CB650 (Steel)

The rear sprocket for Honda CB650 (Steel) engages the chain through its steel teeth. CB650 covers a broad group of bikes. Model year and version determine which sprocket carrier must be checked.

Steel sprocket characteristics

The sprocket is CNC-machined from CrMn 5045 steel, with steel teeth carrying the chain's pulling load directly. This option suits riders who prefer steel in the area that repeatedly engages with the chain. A steel sprocket may weigh more than an aluminum sprocket of the same dimensions. In return, it provides the steel-tooth construction required for the application. An excessively worn chain or incorrect chain slack can still cause rapid wear on a new sprocket.

Selecting tooth count and chain size

If you are replacing a worn sprocket and are happy with how the bike rides, retain the existing rear tooth count. With the front sprocket unchanged, adding rear teeth increases the final drive ratio. The chain may need adjustment or a different length. This model is available with 42 teeth. This product uses a size 525 chain. Check the markings on your bike's chain.

Checking the rear wheel assembly

When fitting a steel sprocket to CB650, compare the mounting face, bolt circle and offset with the old sprocket to maintain the correct chainline. If the rear wheel has been changed, use dimensions from the carrier currently fitted rather than an image of a sprocket on a bike with stock wheels. Check that the chain runs centrally on the tooth ring.