For sale is a NOS thin ring piston for a Husqvarna 2100. Included are 4 new rings and 3 spare used rings. This is a 56mm piston with 0.6mm rings. If I'm not mistaken, it will also fit the 2101 and 1100. One circlip is missing. I'm asking $199 OBO. BTW, this item is also listed on eBay.