PBI Sprockets PBI-272-21 21T Transmission Sprocket for Sportster 54-Early 79

• Precision-machined American-made transmission sprockets for all 1936-90 Sportster and Big Twin

• This sprocket is plated for corrosion resistance and fully-hardened for maximum service and performance

Product Details

* CNC machined from high grade steel.

* Maximum spline-to-shaft contact.

* Heat-treated for long life and extended wear.

* Nickel plated for corrosion & wear resistance

* Manufactured in USA.

Use with O-Ring Chain # BC-19-7286 & Clip Link # BC-19-7303