SPIREX Oversized Ceramic Pulley Wheels for Shimano R9250 R8150 R9100 R8000 – Titanium Upgrade 14T+17T, 76g Ultra-Light

Upgrade your drivetrain with the SPIREX Ceramic Pulley Wheel Set, engineered for Shimano Dura-Ace and Ultegra 12/11-speed rear derailleurs. Weighing just 76g, this ultra-lightweight system is precision CNC-machined from 6061-T6 aluminum with titanium axle and pulley bolts for superior rigidity and corrosion resistance.

The 14T+17T pulley configuration enhances shifting stability and chain retention. Featuring high-efficiency hybrid ceramic bearings lubricated by Japanese NSK grease, the system delivers quieter, smoother operation and long-term performance.

Compatibility:

• Shimano Dura-Ace: R9250 / R9150 / R9100

• Shimano Ultegra: R8150 / R8050 / R8000
  (Note: R9250 users must use the provided anti-derailment washer for correct installation.)

Key Features:

• Weight: 76g

• Pulley material: 6061-T6 aluminum alloy

• Axle & bolts: Titanium

• Bearings: Hybrid ceramic + NSK Japan lubrication

• Design: High-gloss blade-style finish

• Warranty: 2 years for first-time buyers

Note: Professional installation recommended for optimal performance. For best shifting results, pair with a full Shimano drivetrain.

Compatibility Check: Due to the complexity of original equipment manufacturer (OEM) parts' models and batches, there may be instances where this product is incompatible.

Upon receiving this product, please compare it with the OEM specifications to ensure compatibility before installation.

Torque Specifications: Install this product strictly according to the torque values specified in the OEM parts manual.Installation Issues: If you encounter any discrepancies with the OEM specifications or face difficulties at the initial stage of installation, stop immediately and contact customer service for assistance with returns or exchanges.

No Forced Installation: Do not force installation under any circumstances.Liability: Any damages resulting from forced installation or unauthorized modifications of this product (or its components) will be the sole responsibility of the buyer.

All products are photographed to accurately represent the colors you will see upon receipt.

Due to differences in lighting, angles, or screen settings, slight color variations may occur.

The actual product should be considered the standard.For "colored" and "blue" products, the coloring process may result in uneven color distribution, making each product unique.