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How Good Is The Aliexpress OSPW (Ceramicspeed?)
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Bike part mentions in this video
OSPWRYET RS Ceramic Oversized Derailleur Pulley Wheel (OSPW) 13T-19T Pulley Wheel Fit For Shiman R7000 R8000 R8100 R8150 R9100 R9250
Created: February 06, 2026The reviewer discusses an AliExpress OSPW (Oversized Pulley Wheel) system, which is a generic or unbranded alternative to the Ceramic Speed OSPW. They installed it on a Shimano Dura-Ace 12-speed rear derailleur with an 11-speed chainring. They state the shifting is smooth, the transmission works smoothly and freely, and the part feels high quality and spins nicely. Installation was easy by following the original Ceramic Speed tutorial. The only issue was a small gap causing chain rub in extreme cross-chaining (big-big gear). They note it is a stylish, closed jockey wheel design that actively removes debris.
AI-Summary
Pros
- Shifting is really smooth
- The whole transmission works smoothly and freely
- Feels really nice and high quality in the hand
- Spins nicely
- Installation is really easy (especially on Shimano)
- Works pretty flawlessly aside from one specific issue
- Stylish with a closed jockey wheel design
- Has an active debris remover, so not a lot of dirt gets stuck
- Costs a whole lot less than the original
Cons
- Had a small gap between the chain and inner plate causing rubbing in extreme cross-chaining (big chainring and big rear cog)
- Lacks the quality control, warranty, and support of a brand like Ceramic Speed
- Uncertain what quality the ceramic bearings are or how long they will last
- Unclear what AliExpress support provides if there is an issue (might just refund)
Key Points
- Installed on a Shimano Dura-Ace 12-speed transmission
- Used with an 11-speed chainring without issue
- Closed jockey wheel design
- Active debris remover feature
- Installation follows the Ceramic Speed tutorial
- Easy to install on Shimano derailleurs
- The only mechanical issue was chain rub in extreme cross-chaining due to a small initial gap