The Ryet RS Ceramic Oversized Derailleur Pulley Wheel is a budget-friendly alternative to high-end OSPW systems, offering smooth shifting, easy installation, and a stylish closed design with active debris removal. However, it exhibits chain rub in extreme cross-chaining, and its material and bearing quality are uncertain, with claims of being 'handbuilt in Denmark' doubted.
Pros
- Smooth shifting and smooth operation of the drivetrain.1
- Feels high quality and spins nicely.1
- Easy installation, especially on Shimano derailleurs.1
- Closed jockey wheel design is stylish and less prone to collecting mud.1
- Active debris remover helps prevent dirt accumulation.1
- Costs significantly less than original Ceramic Speed OSPW.1
- Properly sealed bearings that performed well over 1000 km in wet/dirty conditions without maintenance.2
- Bigger pulley wheels reduce chain friction.1
Cons
- Chain rub in extreme cross-chaining (big chainring and big rear cog) due to a small gap.13
- Material feels like hardened plastic rather than real carbon fiber.1
- Claim of being 'handbuilt in Denmark' is probably not true.1
- Feels heavy, heavier than a Dura-Ace 12-speed cage.1
- Compatibility claims conflict with Shimano's statement about non-interchangeable derailleur cages.1
- Lacks quality control, warranty, and support of a brand like Ceramic Speed.1
- Uncertain quality of ceramic bearings and their longevity.1
Key Facts
- Cost approximately $60.1
- Compatibility claimed for Shimano R7000, R8000, R8100, R8150, R9100, R9250 derailleurs.1
- Uses 2.5mm hex key for all screws.1
- Bearings have dust covers and appear to be steel.1
- Closed jockey wheel design with active debris remover.1
- Installation follows the Ceramic Speed tutorial and is easy on Shimano derailleurs.1
- One user reported chain rub in extreme cross-chaining (53/30 or 36/30 with 11-30 cassette), which disappears when shifting to smaller cogs.3
- One user completed about 1000 km on wet and dirty roads without needing to oil the bearings, which remained spinning like new.2
Reviews & Ratings
04:18The reviewer purchased an oversized pulley wheel system for approximately $60, which is a copy of the latest Ceramic Speed design. They note the packaging is nice, and they chose the closed jockey wheel version for aesthetics, better mud clearance, and reduced mud collection. The part is claimed to be 'handbuilt in Denmark,' which the reviewer doubts. The build quality feels surprisingly nice and solid, though the material feels like hardened plastic rather than real carbon fiber. It spins quicker than some original Shimano pulley wheels. The reviewer plans to mount it on a Dura-Ace 12-speed derailleur to test long-term shifting quality and performance, despite compatibility claims that conflict with Shimano's specifications. They also show the pulley wheels have dust covers and bearings that could be replaced with ceramic ones.
04:01The 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.
I just bought and installed a Ryet OSPW. The quality Looks good but I experiance chainrub when I am in the gear 53/30 or 36/30 (with 11-30 cassette). as soon as I get one cog lower the rubbing gets less and disappears when I am on the 3rd/4th cog (from the top).
This Ryet RS OSPW is actually really good because it has properly sealed bearings. I've done about 1000km often on wet and dirty roads with it now and it spins like new without any need for oiling and stuff. I didn't open or measure the bearings but they looked like some standard sealed bearings from the outside.
I am running a Ryet OSPW, it's a CeramicSpeed Alpha knock-off, but is working great so far: https://a.aliexpress.com/_Eva4gEg
Where to Buy
RYET RS Full Ceramic Oversized Derailleur Pulley Wheel 13T-19T Pulley Wheel Fit For Shiman R7000 R8000 R8100 R9100 R9250 Part
RYET RS Ceramic Oversized Derailleur Pulley Wheel 13T-19T Pulley Wheel Fit For Shiman R7000 R8000 R8100 R8150 R9100 R9250 - AliExpress 18
RYET RS Ceramic Oversized Derailleur Pulley Wheel 13T-19T Pulley Wheel Fit For Shiman R7000 R8000 R8100 R8150 R9100 R9250
Questions about RYET RS Ceramic Oversized Derailleur Pulley Wheel 13T-19T Pulley Wheel Fit For Shiman R7000 R8000 R8100 R8150 R9100 R9250
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