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Continue to ChatLock Nut - GB/T 6187.2 M12?1.25, XY1100, Chironex 1000cc, 1100cc (1pc) - HWN2490 - PBC2887F1 - https://powersporta.com/express-parts-catalog/hardware/lock-nut-gb-t-6187-2-m12-1-25-xy1100-chironex-1000cc-1100cc-1pc-hwn2490-pbc2887f1