Product Description

Ultra-Light Titanium Upgrade for Shimano Ultegra Di2 R8150

Upgrade your Shimano Ultegra Di2 R8150 road groupset with the S-PARTS Titanium Drivetrain Bolt Kit.

Designed for Shimano R8150-series road components, this kit replaces selected original steel hardware with precision-machined titanium alloy parts. It helps reduce drivetrain weight while improving corrosion resistance and adding a clean, premium finish to your bike.

Each component is CNC machined for accurate fitment, dependable installation, and long-term durability. This kit is ideal for lightweight climbing bikes, aero race bikes, performance road builds, and high-end custom projects.

Key Features

• Designed for Shimano Ultegra Di2 R8150 road groupsets
• High-strength titanium alloy construction
• Precision CNC-machined for accurate fitment
• Lighter than standard steel hardware
• Excellent corrosion resistance
• Premium anodized finish options
• Clean and refined drivetrain appearance
• Ideal for lightweight and race-focused road-bike builds

Kit Contents

① Front Derailleur Mount Bolt ×1
② Front Derailleur Spacer ×1
③ Front Derailleur Support Bolt ×1
④ Rear Derailleur Pivot Bolt ×1
⑤ Guide Pulley Bolt ×1
⑥ Tension Pulley Bolt ×1
⑦ Limit Screws ×2
⑧ B-Tension Screw ×1
⑨ Crank Pinch Bolts ×2
⑩ Crank Preload Cap ×1
⑪ Chainring Bolts ×4
⑫ Shift/Brake Lever Clamp Bolts ×2

Compatibility

Compatible with:

• Shimano Ultegra Di2 R8150 road groupset
• Shimano R8150-series electronic drivetrain components
• Compatible Shimano Ultegra Di2 road shift/brake levers
• Compatible Shimano road crankset hardware listed above

Please compare the original bolt shape, dimensions, and mounting position before ordering. Compatibility may vary depending on the exact component version and bike configuration.

Individual Shifter Clamp Bolt and Nut Set

Only need the titanium road shifter clamp bolt and nut set?

You can purchase it separately here:

Buy the S-PARTS Titanium Road Shifter Clamp Bolt and Nut Set

Material and Manufacturing

• Material: High-strength titanium alloy
• Manufacturing process: Precision CNC machining
• Finish: Natural titanium or anodized color options
• Application: Road-bike drivetrain and control-component upgrade

Why Choose Titanium Hardware?

Titanium alloy provides an excellent balance of low weight, strength, corrosion resistance, and premium appearance.

Compared with standard steel hardware, titanium components help reduce unnecessary weight while maintaining dependable performance for their intended mounting positions. They are an ideal choice for riders who pay attention to every detail of a high-performance road-bike build.

Recommended Use

Perfect for:

• Shimano Ultegra Di2 road bikes
• Lightweight climbing bikes
• Aero road bikes
• Race-focused builds
• Custom road-bike projects
• Premium Shimano upgrades
• Titanium hardware conversions

Installation Notes

• Professional installation is recommended.
• Use Shimano-recommended torque specifications for each mounting position.
• Apply suitable anti-seize compound or assembly paste where required.
• Do not overtighten titanium hardware.
• Recheck all bolts after the first few rides.
• Product colors may appear slightly different under different lighting conditions.

Package Includes

1 × S-PARTS Titanium Drivetrain Bolt Kit for Shimano Ultegra Di2 R8050 / R8150 / R9250

Only the titanium parts listed in the kit contents are included. Bicycle components shown in product images are for display purposes only.

Verificación de compatibilidad: debido a la complejidad de los modelos y lotes de piezas del fabricante de equipos originales (OEM), puede haber casos en los que este producto sea incompatible.

Al recibir este producto, compárelo con las especificaciones OEM para garantizar la compatibilidad antes de la instalación.

Especificaciones de torque: Instale este producto estrictamente de acuerdo con los valores de torque especificados en el manual de piezas OEM. Problemas de instalación: Si encuentra alguna discrepancia con las especificaciones OEM o enfrenta dificultades en la etapa inicial de instalación, deténgase inmediatamente y comuníquese con el servicio al cliente para obtener ayuda con devoluciones o cambios.

Sin instalación forzada: No fuerce la instalación bajo ninguna circunstancia. Responsabilidad: Cualquier daño resultante de una instalación forzada o modificaciones no autorizadas de este producto (o sus componentes) será responsabilidad exclusiva del comprador.

Todos los productos están fotografiados para representar con precisión los colores que verá al recibirlos.

Debido a diferencias de iluminación, ángulos o configuraciones de pantalla, pueden ocurrir ligeras variaciones de color.

El producto real debe considerarse el estándar. Para los productos "coloreados" y "azules", el proceso de coloración puede generar una distribución desigual del color, lo que hace que cada producto sea único.