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Item specifics
Product Description
it is cnc machined by AL 7075-T6 round rod ,finished machined by diamond cutter,with diamond metal texture and good abrasion resistance index , it adopts imported Japanese steel bearing,rotating without resistance ,it greatly decreased frictional resistance,and increased cycling efficiency, the design inreased bike derailleur shifting speed ,it causes no noice when shifting speed k and prevent bike chain falling . Specification: Product Name: Jockey Wheel Bicycle Rear Derailleur Pulley Size:12T,14T Adapt to the bike speed: 7/8/9/10/11/12 speed Acrew axis:Fit for 4/5/MM roller screw axis Body: 7075 aluminum alloy Diameter:50mm(12T),58mm (14T) Bearing:ceramic bearing ,stainless steel shell , more durable Copper Bushing , Resistant Color: red black blue gold Green Net Weight: approx 12/15g Apply for most of rear derailleur on the market Package: Narrow-Wide teeth Rear Derailleur pully *1 pcs Copper Adapter *1 pcs 1>Stainless Steel Shell ,more durable , compared with nylon shell , nylon shell is easy to break after 100 miles travel 2>Narrow Wide Teeth Design, Prevent the horizontal swing of the chain 3>Copper Bushing ,High Hardness ,Improve Life Time |