I think you need the spacers, if you are talking about the solid piece. To lower them you use the bottoming springs- one for 1" and 2springs for 2".

2002 Bandit 1200/ GSXR cams/ 1277 BB Kit/ Holeshot header and can/ 38mm flatslides/ a good head/lotsa hp/lotsa tq- lots of rear tires...