16271-21050 127121050 Piston rings Kubota Aste, B, BX, D1005, V1301 Kubota A: (Aste) A17 A175 Kubota B: B21 B2100 B2301 B2320 B2710 B7500 B7510 Kubota BX: BX2660 BX2670 BX2680 Kubota F: F2260 F3060 Kubota R: R310 Kubota X: X-20 Kubota ZD: ZD25 ZD326 Kubota engine: D1005 V1301 Dimensions: Bore: 76mm