SIGMA PRO Connector makes the snap together on chain assembly faster without the riveting removal tool. Sigma Pro’s pinhead groove interlocks positively with the top plate, providing remarkable riveting strength, making Sigma Pro Connector as strong as any other links in the chain, and no issues with the quality for shifting. TAYA DHT pin applied on Sigma connector with self-lubricant & extreme durability is as same as any link of other DHT chain model. There are millions of Sigma Pro Connectors in use every day around the world for over 26 years providing its reliability.
按住Sigma Pro外片一端，並將另一端轉至小軸
將Sigma外片放在小軸頂部，同時輕輕彎曲鏈片
。
壓緊鏈條，直到聽到「喀」一聲，並檢查有無緊目狀況
大亞鏈條的專利Sigma pro快扣設計徹底改變了鏈條的安裝方式。Sigma pro快扣不僅經過專業賽事驗證，更已問世超過19年，全世界每天有數百萬個 Sigma pro快扣再不間斷的運行。
Sigma pro的採用平頂蘑菇形頭設計，可與側板緊密鎖緊，其獨特的設計提供了前所未有的鉚接強度。
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