With our OSPW RS for Shimano 9250/8150 Road groupsets, we are pushing the OSPW into the future with a distinctly modern and angular design. The updated design brings balance and refinement to the OSPW System, allowing it to blend seamlessly with contemporary bike and groupset trends, becoming a key part of the whole.

With an added level of customization (multiple logo and pulley wheel options), combined with innovative tech features, the OSPW RS meets consumer demands for personal expression and a premium riding experience. The OSPW RS is a statement of where we’ve been and where we’re headed—always at the forefront of innovation.

SHIFTING TIME

Active Debris Remover (ADR)
ADR is a patent-pending technical feature designed to make it virtually impossible for debris to enter the bearing. It uses a new dust cover design, anchored securely in a groove within the pulley wheel, fully enclosing the bearing. This is paired with a bladed groove structure that surrounds the dust cover, dynamically extracting debris from the pulley wheel during rotation.

ADR has been developed through collaboration between our R&D department, the CeramicSpeed test lab, and field testing by select professional off-road teams.

ALPHA Disc
For the new OSPW RS, we are offering versions fitted with the ultra-durable ALPHA Disc Pulley Wheel, first introduced with our OSPW X for Eagle Transmission.

The ALPHA Disc features a two-piece construction: a narrow-wide tooth profile made from composite material for prolonged wear protection and noise reduction, and a solid aluminum disc that prevents external objects from getting stuck between the spokes of the pulley wheel. This also adds strength and stiffness to the design.

The initial solid disc pulley wheel design was field-tested during CycloCross World Cups. In the 2022 CycloCross season, our sponsored team, Tormans, extensively used the solid disc design, providing valuable feedback on its ability to clear mud in challenging conditions.

New design: improved quality and strength
The new design for the OSPW RS is more than just a visual update. The cage itself has been reinforced to provide new levels of strength and durability.

In the box:

• Complete OSPW RS ALPHA for Shimano 9250/8150 system