PREMIUM RUBBER TRACK KX161-3 / KX057-4 / KX057-5 / 341 / 435 / 337 / CK50 / CK52 / SOLOR 55 / 55N / 50D / SK50SR-3 / U45 / EC55 / ECR58 / 55B / 60D / 60G / 50G