1. ZT250-S second generation sprocket wheel seat
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2. ZT310-R 520-42T sprocket
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3. Non-standard nut M10×1.5(Dacromet)
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4. ZT310-R 114 section chain (520 oil seal chain)
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5. ZT310-R1 114 section chain (520 oil seal chain/open type)
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6. ZT310 rear wheel left sleeve φ20×φ30×φ35×17.8
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7. ZT250-S sprocket buffer rubber
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9. GB276 deep groove ball bearing 6205-2RS-C0
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