Bike Ceramic Bearing Pulley Rear Derailleur 12T 14T Road Bike Guide Roller Idler 4mm 5mm 6mm For shimano sram GX XX1 Jockey Wheel Bike Part


Feature:
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 .


Product Name:  Jockey Wheel Bicycle Rear Derailleur Pulley


Size:12T,14T,16T,18T

Adapt to the bike speed: 7/8/9/10/11/12 speed

Acrew axis:Fit for 4/5/6 MM roller screw axis

Body:    7075 aluminum alloy

Diameter:50mm(12T),55mm  (14T),68mm (16T),77mm (18T)


Bearing:ceramic bearing ,stainless steel shell , more durable


Copper Bushing , Resistant


Color:  red black blue gold  Green

Net Weight: approx 14.9g 

Apply for most of rear derailleur on the market


Package:

Narrow-Wide teeth Rear Derailleur pully *1 pcs


Copper Adapter * 2 pcs(4mm,5mm)


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 Time16T For

(1) Shimano 8800RD--6800 6870/6770/9000/9070,  

(2) Shimano 8700RD--5800/5700/4600/4700/105/6600,

(3) Shimano RD--R8000 etc.,


18T For Shimano R7000/R8000/R8050/R8070/R9170/R9150/R9100 etc.,














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