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Cycling navigate_next Components navigate_next Rear derailleurs navigate_next Accessories navigate_next CeramicSpeed ALPHA PW derailleur pulleys for Shimano R8150/R8050/R7150/R5800
CeramicSpeed

CeramicSpeed ALPHA PW derailleur pulleys for Shimano R8150/R8050/R7150/R5800

229 €
RRP 259 €
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Delivery method on Thursday 24.09.2026
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Delivery method on Thursday 24.09.2026
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CeramicSpeed ALPHA PW pulleys are a premium upgrade for Shimano Ultegra R8150 / R8050 and 105 R7150 / R5800 derailleurs in stock size. The combination of a one-piece composite body, low-friction ceramic bearings, and patented ADR technology delivers exceptionally smooth shifting, high durability, and long lifespan for both road and gravel cycling. The specific shape of the upper and lower pulley ensures precise chain guidance, quiet operation, and stable performance even under load, while the stainless steel bearing covers protect against dirt and moisture.

  • Full compatibility with Shimano Ultegra R8150 / R8050 and 105 R7150 / R5800 systems
  • One-piece injection-molded composite pulley body for high durability
  • CeramicSpeed low-friction ceramic bearings
  • Patented ADR technology for bearing protection and long lifespan
  • Distinctive upper and lower pulley shape for precise chain guidance and quiet operation
  • Stainless steel bearing covers adapted for the derailleur, no additional spacers needed
  • Developed, designed, and hand-assembled in Denmark
  • Package includes a set of ALPHA PW pulleys and UFO TECH Pulley Wheel Oil 15 ml
  • Weight: 22 g
Product details
Groupset Shimano Ultegra
product ID 409430
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CeramicSpeed
Accessories CeramicSpeed
CeramicSpeed is a Danish brand that specializes in high-performance ceramic bearings and drive components for various industries including cycling, automotive and industrial applications. The brand is known for its innovative and cutting-edge technology, offering products that aim to improve the efficiency, durability, and overall performance of mechanical systems. CeramicSpeed was founded in 2004 by Jacob Csizmadia, a mechanical engineer with a passion for cycling. Frustrated by the limited options for high-quality bearings in the cycling industry, Csizmadia decided to develop a superior solution. He began experimenting with ceramic materials, which are known for their low friction and high wear resistance. After years of research and development, CeramicSpeed was born.
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