MT01 / MT03. 1 x JT 520X1R3 Dual joining link (contains rivet link and spring link). 1 x JT rubber cushioned steel front sprocket (OE size). 1 x JT steel rear sprocket (OE size). The front sprocket has a rubber damper cushion which reduces friction between the chain and sprocket; this increases chain life by up to 20% and reduces chain noise by up to 30%.
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