OSPW Oversized Pulley System Cage - Compatible with Shimano Dura-Ace R9100 Ultegra R8000 - Sealed Bearings

The media could not be loaded. Having watched videos about watts gained, racing, etc, etc, I was thinking this item was not for me because I am an enthusiast who loves to ride. I would recommend this OSPW; besides making my bike look amazing, its also feels smooth. It feels like its a half gear easier. It makes my rides more enjoyable. Easy installation with my Ultegra groupset, fit and finish is great. I have OSPWs on both my bikes.

Am new to cycling my friends talk about this so I got it it's been like 3 ride I have done with it I don't know or can't say if this makes a difference but it looks good on the bike

I replaced my stock crank shift with this one, my rear derailleur is shimano ultegra R8000 and it works fine. Please note that bearing is not ceramic bearings

Installed perfectly on my Di2 Ultegra mech. Smooth operation and not noisy at all. Drivetrain felt smoother on a hard ride today after install. Would recommend.

Highly recomend it

No duro mucho y se daño, pero el proveedor me dijo que me enviaría otro por garantía, queda esperar que llegue.

ya hice mis primeras 100 millas y todo salió de maravilla 100 % recomendado

Excelente producto y cumplió las expectativas