I just bought a 2000 Polaris trailblazer and the rear end is saving bad when I get on it I've been trying to buy some coil spacers but the only ones I can find is for the front not the rear thinking about making one what can I do?

 

You might jack it up under the transmission to see if the swing arm bushings or axle bearings are worn causing the rear end to sway.Dirt Cheap Yamaha & Polaris OEM Parts & Accessories – Cycle Parts Warehouse

 

If you meant that it was sagging most likely you need a new spring. I put a heavy duty spring on mine when I had a Trailblazer.