Universal Parts 30x3.55 O-ring $1.49 Quantity discounts available QuantityPrice SKU: 180-69 This item is IN STOCKCurrent Stock: 11 Quantity -+ Add to Cart Details Supported Models 250cc 172mm 4-stroke, Boreem (BMS), CFmoto V3/V5, Honda, Kazuma, Roketa, SUNL, Tank, Various unlisted makes/models DetailsSupported Models Back Universal Parts O-Ring size 30x3.55 for 250cc 4-stroke water-cooled CN250 172mm engines. Back 250cc 172mm 4-stroke, Boreem (BMS), CFmoto V3/V5, Honda, Kazuma, Roketa, SUNL, Tank, Various unlisted makes/models