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Derailleur Pulley
Derailleur pulleys play a big role in driving train performance. These small wheels have the fastest spinning bearings of a bicycle. To guarantee the lowest friction possible, the CEMA JW series installed the fastest spinning bearing we had available for industrial customers: CEMA's ZrO2 Full Ceramic Bearing. Due to ZrO2 material properties not requiring any grease or seals, the bearings can spin freely and are near-frictionless with a lifetime exceeding any other bearing type.
Assembly with G5 Si3N4 Ceramic Ball, you can enjoy precise shifting and smooth performance. All pulleys are available with a choice of PA66+GF plastic or 7075 T6 aluminium body.
Compatibility | Discipline | Speed | Tooth Pulley | Material | Colour | Type | Bearing Type |
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Shimano | Road | 9-10-11 | 11-11 | PA66 Plastic | PR01 |
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Aluminium | B001 |
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R001 |
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10-11 | 12-14 (OS) | Aluminium | B024 |
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MTB | 9-10-11 | 11-11 | PA66 Plastic | PR01 |
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Aluminium | B001 |
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R001 |
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12 | 12-14 | Aluminium | B024E |
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SRAM | Road | 9-10-11 | 11-11 | PA66 Plastic | PR01 |
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Aluminium | B001 |
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R001 |
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MTB | 10-11 | 12-12 | PA66 Plastic | PR02 |
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12 | 12-14 | Aluminium | B024E |
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CAMPAGNOLO | Road | 11 | 11-11 | PA66 Plastic | PR01 |
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