... surface 3.Good quality 4 OEM aluminium casting sprocket seat for motorcycle Materialaluminium alloy ADC12Toolingdie-casting 80-280T machinesSurface ... Silver platingQualityaluminium sprocket good qualityPaymentT/T,30% in advance, ... ,TITAN2000,TITAN150,XLR125,CDI,XF125 etc. aluminium sprocket seat FOR motorcycle