Qianjiang version ZX4R, Qianjiang version 790 engine introduction

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Focus on various motorcycle power modifications!
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[@user-yy6pz9fp9o]

辛苦了！

[@stitch797]

trident660 發動機如何

[@MrGodpasser]

能有類似的引擎配件能修還是很不錯的

[@ufjk0816]

厲害！