Tacx, T4035, Teflon derailleur pulleys with ceramic bearings, 11T, Shimano, Campagnolo
Tacx
$48.99
$69.99
(You save
$21.00
)
* The teflon wheel keeps the dirt away* Lubricated ceramic ball bearings for lower friction and low maintenance * The seal completely closes the ball bearings off from the outside world making them very durable