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Continue to ChatExhaust Valve - XY1100, Chironex 1000cc, 1100cc - 20A2588 - PBC1658F1 - https://www.powersporta.com/express-parts-catalog/engines-parts-upgrades/exhaust-valve-xy1100-chironex-1000cc-1100cc-20a2588-pbc1658f1