The absoluteBLACK HOLLOWcage® V2 is a next-generation oversized derailleur pulley cage designed specifically for Shimano 12-speed road groupsets. Featuring a carbon-polymer mono-plate construction, oversized full ceramic bearings, and the patented Xring Pulley™ noise-reduction system, it delivers exceptionally quiet operation, precise shifting, and long-term durability.
Version 2 represents a complete refinement of the original mono-plate concept. The updated cage uses the same advanced carbon-polymer material employed in SRAM RED and Shimano Dura-Ace derailleur cages, finished with a high-gloss surface that highlights its carbon structure. Every component has been optimized for stiffness, alignment accuracy, and acoustic control—resulting in one of the smoothest and quietest drivetrain upgrades available.
FEATURES
Carbon-Polymer Mono-Plate Construction
One-piece injection-moulded mono-plate design
Optimal fiber alignment for stiffness and durability
Lightweight yet highly resistant to deformation under load
Full Ceramic Bearings
True full ceramic bearings (ceramic balls and ceramic races)
Zirconia oxide races with silicon nitride balls
Independently certified by Lucideon Ltd (UKAS-accredited)
Lower friction, corrosion-free, and long service life
Xring Pulley™ Noise-Reduction System
Patented rubber-suspended X-ring design
Absorbs chain engagement impact at the guide pulley
Reduces drivetrain noise by 5–7 dB compared to stock pulleys
Up to 40% quieter than standard Dura-Ace pulleys
Optimized Oversized Pulley Geometry
Improved chain articulation and reduced friction
Stable shifting under load
Compatible with cassettes up to 34T
Product Positioning
Silent Performance · Advanced Materials · Precision Drivetrain Upgrade
The HOLLOWcage® V2 is positioned as a high-end performance upgrade for riders who demand smoother shifting, lower drivetrain noise, and premium materials—without compromising reliability or compatibility.
Unlike conventional OSPW systems that focus purely on marginal efficiency gains, HOLLOWcage® V2 emphasizes real-world ride quality: quieter operation, refined shifting feel, and durability suitable for daily riding, racing, and long-term use.
Recommended For
Riders using Shimano Dura-Ace 9250 or Ultegra 8150 (12-speed)
Cyclists sensitive to drivetrain noise and shifting feel
Performance road riders seeking a quiet, refined OSPW upgrade
High-end builds where aesthetics, silence, and precision matter
Riders who want true full-ceramic bearings, not hybrid designs
SPECIFICATIONS
HOLLOWcage® V2 – Shimano Dura-Ace 9250
Weight: 66 g ±1 g
Compatibility: Shimano Dura-Ace 9250 (12-speed only)
Max Cassette Size: 34T
Materials: Carbon fiber-polymer matrix, 7075 aluminum, ceramic, rubber
Lower Lockring Colors: PVD Rainbow, Black, Titanium, Red, Gold
Upper Lockring Color: Black
HOLLOWcage® V2 – Shimano Ultegra 8150
Weight: 67 g ±1 g
Compatibility: Shimano Ultegra 8150 (12-speed only)
Max Cassette Size: 34T
Materials: Carbon fiber-polymer matrix, 7075 aluminum, ceramic, rubber
Lower Lockring Colors: PVD Rainbow, Black, Titanium, Red, Gold
Upper Lockring Color: Black
In the Box
Complete HOLLOWcage® V2 pulley cage
Lockring tool
Designed in England
Manufactured in the EU
