CeramicSpeed OSPW RS ALPHA for Shimano 7150 TEAM Logo

With our OSPW RS for Shimano 105 7150 series groupsets, we elevate the OSPW into the future – with a distinctly modern and angular design. The updated design brings balance and refinement to the OSPW system and seamlessly integrates it into contemporary design trends of bikes and groupsets. With an expanded degree of customisation (multiple logo and pulley wheel options) combined with new innovative technology features, the OSPW RS meets customer demands for personal expression and a premium riding experience. The OSPW RS is a statement of what we were and where we are going – always at the forefront.

Patented ADR technology

The patented ADR technology is a technical feature based on a unique combination that makes it nearly impossible for dirt to penetrate the bearing. It consists of a new dust protection design that is securely anchored in a groove in the pulley wheel and completely encloses the bearing. This is complemented by a blade-shaped groove structure around the dust protection that dynamically expels dirt while the pulley wheel rotates. The patented ADR technology was developed through continuous exchange between our R&D department, the CeramicSpeed test laboratory, and field tests by a selected group of professional off-road teams.

ALPHA Disc

For the new OSPW RS, we offer versions with the extremely durable ALPHA Disc pulley wheel, which was first introduced with the OSPW X for Eagle Transmission. The ALPHA Disc features a two-part construction: a separate narrow-wide tooth profile made from a composite material that provides extended wear protection and noise reduction, as well as a solid aluminium disc that prevents external objects from getting caught between the spokes of the pulley wheel while enhancing the strength and rigidity of the design ht. The first iterations of the solid disc design were tested during the Cyclocross World Cup seasons. In 2022, our sponsored team Tormans extensively used the disc design and provided valuable feedback on dirt-free performance under the most challenging conditions.

New design: improved quality and strength

The new design of the OSPW RS is not just an aesthetic update. The cage itself has been reinforced to provide new levels of strength and durability.

Specifications

• Discipline: Road and Tri
• Derailleur brand: Shimano
• Derailleur model: 105 7150
• Pulley material: Aluminium
• Net weight: 101 g

Included:

• Complete OSPW RS ALPHA system for Shimano 7150