CeramicSpeed has introduced many variations of its OSPW (oversized pulley wheel) system to pair with ever-changing rear derailleur designs – the total is now more than 40 – but the OSPW RS represents the first substantial technological update to the product since its introduction in 2015.
‘We began development in 2013, when 10-speed groupsets were the norm,’ says CeramicSpeed’s head of product management, Paul Sollenberger.
‘Bike and derailleur design has evolved quite a bit since then, so in 2021 we started the RS project to align the look with current 12-speed groupsets.’
The new OSPW is distinctly more angular as a result, which drives both form and function.
Sollenberger says the refreshed cage architecture makes the system stiffer and stronger without affecting weight that much.
While the RS system is offered with CeramicSpeed’s normal spoked aluminium lower pulley, the Alpha version swaps in a solid disc.
‘This pairs composite narrow-wide teeth for quieter performance with a solid aluminium core,’ says Sollenberger.
‘That has a bladed groove structure, which extracts debris from the wheel while it’s rotating.
Combined with a new dust cover that completely encloses the bearing, it’s virtually impossible for rubbish to enter the bearing. This makes the OSPW RS even more efficient and robust.’
Au Pricing $799
Website ceramicspeed.com
