Progressive Suspension 12 standard duty black springs for use with the Progressive Suspension 12 series shocks for vintage Honda motorcycles. Can also be used as replacement springs for Progressive 412 series shocks.
- High quality progressive rate springs.
- Provides plush performance, stability and prevents excessive bottoming.
Progressive Part Number: 03-1394B
Free Length: 249mm (9.8")
Diameter at widest point: 61.75mm (2.4")
NOTE: Progressive springs only fit Progressive shocks. Spring installation on any other shock is not recommended.