CeramicSpeed OSPW X Derailleur Pulley System - for Shimano GRX (RX820) - black

OSPW X – Race-Winning Speed

Thanks to its unique design and extremely low-friction bearings, the Oversized Pulley Wheel system (OSPW) manages to optimize the overall efficiency of the drivetrain. The same applies to the OSPW X models, which are specially designed for gravel and cross disciplines. Their successful use in CX World Cups and prestigious races such as Paris-Robaix and Strade Bianche shows that they meet the corresponding requirements for durability, longevity and low friction to a particularly high degree.

The handmade OSPW systems consist of a cage as well as an upper and lower pulley, which are matched to the respective rear derailleur type by means of a corresponding number of teeth. In the version for Shimano GRX 2x12-speed rear derailleurs, the concept with oversize derailleur pulleys reduces friction by 35 to 40 % compared to the standard configuration. In addition, the adjustable spring tension enables an individual setup tailored to the riding conditions.

Technical details of the CeramicSpeed OSPW X system

• derailleur pulleys: aluminum
• bearings: hybrid (ceramic balls + stainless steel cups), handmade
• cage: carbon fiber reinforced polyamide (PA), injection molded
• tooth count: 13/19 (upper/lower pulley)
• spring tension: adjustable (4 levels)
• weight: approx. 70 g (manufacturer's specification)

Compatibility:

• shifting system: Shimano GRX, 2x12-speed
• rear derailleur: RD-RX820 (mechanical) / RD-RX825 (Di2, electronic)
• cassette (max. sprocket size): 36 teeth

Scope of supply:

rear derailleur cage incl. derailleur pulleys and bearing oil (15 ml)

Regular CeramicSpeed products are covered by a four-year warranty. The detailed warranty conditions can be found at www.ceramicspeed.com.