Polaris Primary Slip Washers
If you are ordering from the states order from Ride Fast Company here:
https://ridefastcompany.com/products/whiskey-throttle-polaris-primary-slip-washers
These are 304 stainless steel washers coated in a extremely durable anti friction coating much better than anyone else's on the market!
They are designed to give the primary spring a surface to slide on as it compresses and decompresses with the closing and opening of the clutch
Using these washers will greatly increase the life of the Polaris primary springs!
Washers work best stacked on top of each other on the inside face (clutch side of the spring)