OEM Primary clutch spring for 2018 & newer Yamaha Snoscoot, Arctic Cat ZR 200 & Skidoo MXZ 200 that has been Cryogenically treated. 200 racing is a very competitive sport so every little thing counts. Cryogenically treated primary springs have more durability to keep them from breaking. It also allows the spring to hold its pressure longer without sagging out which causes poor clutch performance.
CRYOGENICS = CONSISTANT CLUTCHING