Ceramicspeed OSPW Aero ALPHA SRAM RedD1/E1+ForceD1 v2

Aerodynamic Efficiency. Reduced Friction. Every Watt Counts.

The CeramicSpeed OSPW Aero ALPHA is designed for riders looking to maximize drivetrain efficiency without compromising aerodynamics. Developed for SRAM RED and Force AXS groupsets, this oversized pulley wheel system combines CeramicSpeed's low-friction bearing technology with an aerodynamically optimized derailleur cage, creating a performance-focused upgrade for road racing, time trials and triathlon.

Developed in collaboration with aerodynamic specialist Drag2Zero, the OSPW Aero ALPHA takes a comprehensive approach to drivetrain efficiency. Rather than focusing solely on reducing mechanical friction, its integrated design also addresses airflow around the rear derailleur, an area where even small improvements can make a difference at racing speeds.

The latest ALPHA generation introduces improved bearing protection and a quieter, more durable pulley construction, making it a refined upgrade for riders who value both performance and long-term reliability.

Aerodynamic Design

The OSPW Aero ALPHA features a distinctive structural cage designed to manage airflow around the rear derailleur and reduce aerodynamic resistance.

Developed through extensive aerodynamic analysis and wind tunnel testing in collaboration with Drag2Zero, its streamlined construction combines the mechanical advantages of oversized pulley wheels with a carefully shaped outer profile.

According to CeramicSpeed's testing, the system can reduce aerodynamic drag at the rear derailleur by up to 60%, compared with the reference configuration used in its testing.

Reduced Drivetrain Friction

The oversized pulley wheel configuration is designed to improve chain efficiency by reducing the mechanical resistance associated with the rear derailleur.

Combined with CeramicSpeed's precision bearings, the system delivers smoother chain movement and reduced friction throughout the drivetrain.

CeramicSpeed reports a 35–40% reduction in friction compared with a standard pulley configuration, helping riders minimize drivetrain losses.

ALPHA Disc Pulley Technology

The latest ALPHA Disc pulleys feature a two-piece construction combining a solid aluminium disc with a specially developed composite tooth profile.

The aluminium structure provides strength and stiffness, while the composite teeth are designed to reduce chain noise and improve wear resistance.

This construction offers a balance of drivetrain efficiency, durability and quieter operation, making the system suitable for demanding training and racing conditions.

Advanced ADR Bearing Protection

The OSPW Aero ALPHA incorporates CeramicSpeed's patented ADR (Active Debris Remover) technology, developed to improve bearing protection against contamination.

By helping prevent debris from accumulating around the bearing system, ADR technology supports consistent performance and reduces the impact of dirt and other contaminants on bearing operation.

The redesigned Aero ALPHA cage has been developed specifically to accommodate these updated pulleys and their integrated bearing protection.

Precision Engineering

Each OSPW Aero ALPHA system is produced and assembled by hand in Denmark, reflecting CeramicSpeed's focus on manufacturing precision and component quality.

With its aerodynamic cage, low-friction bearings and advanced pulley construction, the system is designed to deliver a combination of efficiency, reliability and distinctive aesthetics.

The understated black finish and subtle pinstripe detailing complete its premium, race-oriented appearance.

Key Features

• Aerodynamic cage design: Developed to reduce drag around the rear derailleur.

• Up to 60% less aerodynamic drag: Based on CeramicSpeed's testing of the rear derailleur system.

• 35–40% lower pulley-system friction: Compared with a standard pulley configuration, according to CeramicSpeed.

• ALPHA Disc pulleys: Aluminium disc construction with composite teeth for reduced noise and improved durability.

• ADR bearing protection: Helps protect the bearings against contamination and debris.

• CeramicSpeed bearings: Precision-engineered for low friction and smooth operation.

• Hand-assembled in Denmark: High-quality construction and attention to detail.

• SRAM AXS compatibility: Designed specifically for supported SRAM RED and Force electronic rear derailleurs.

• Lifetime warranty: Covered by CeramicSpeed's manufacturer warranty, subject to its terms.

Technical Specifications

Compatibility

This version is designed for the following SRAM electronic groupsets:

• SRAM RED AXS D1

• SRAM RED AXS E1

• SRAM Force AXS D1

Important: Compatibility is specific to the listed derailleur generations. Do not assume compatibility with other SRAM Force, Rival, XPLR or Transmission models.

The updated ALPHA Disc pulleys are not compatible as a direct retrofit with previous-generation CeramicSpeed OSPW Aero cages.

Professional installation is recommended to ensure correct setup, chain length and derailleur operation.

What's Included

• 1 × Complete CeramicSpeed OSPW Aero ALPHA system for compatible SRAM RED / Force AXS derailleurs

• 1 × eTap AXS installation tool

Why Choose the CeramicSpeed OSPW Aero ALPHA?

For riders who pay attention to every detail of their setup, the OSPW Aero ALPHA offers more than a conventional oversized pulley upgrade.

By combining aerodynamic development, low-friction drivetrain technology and improved bearing protection, it addresses multiple sources of efficiency loss within a single component.

Whether preparing a road race bike, refining a time trial setup or optimizing a triathlon machine, the CeramicSpeed OSPW Aero ALPHA is built for riders who want their equipment to perform as efficiently as possible.