CeramicSpeed ​​OSPW RS Alpha Equipo Shimano 105 7150

We point riders toward this Alpha Team version when they want CeramicSpeed's actual bearing technology on a 105 Di2 build without paying for the titanium anniversary pieces we also carry. The solid Alpha disc is the detail that matters most in daily use — spoked pulley wheels pick up debris and the occasional dropped chain link, and the solid design just doesn't have anywhere for that to catch.

The ADR debris protection genuinely earns its keep on wet rides. We've had customers bring these back in after a full season of riding through New York winters and the bearings still spin clean, which isn't always true of unprotected pulley bearings after that kind of exposure.

The tradeoff, if there is one, is that this is still a $700 pulley wheel system for a 105-level groupset — it's a real upgrade in bearing quality, not a functional necessity. Riders chasing outright watts savings on a budget might get more value putting that money into wheels or tires first, but for someone who's already dialed in the rest of the bike and wants the smoothest-running drivetrain they can build, this is a legitimate place to spend it.

We'd recommend the Team Logo look specifically to riders who like the aesthetic — it's the same internals as the standard Alpha version, just with the bigger branding.