S-PARTS Titanium Bolt Kit for Shimano Ultegra Di2 R8170 Disc Brake & Shifter | Road Bike Upgrade

he S-PARTS Titanium Bolt Kit for Shimano R8170 is a complete lightweight hardware upgrade designed for Shimano road disc brake systems.
This kit replaces the original steel bolts on calipers, shifters, hydraulic hose connections, and mounting points, delivering reduced weight, improved corrosion resistance, and a premium custom finish.

Precision CNC-machined from high-grade titanium, every bolt is engineered to match Shimano’s original specifications, ensuring perfect fit, safety, and reliability for performance road bikes.

Compatibility

• Shimano Road Disc Brake System: R8170

• Compatible Components:

  • Brake calipers (front & rear)

  • Hydraulic hose connections

  • Shifter bodies

  • Caliper adapters & mounting points

⚠️ Bolt layout may vary slightly by production batch. Actual contents prevail.

Included Hardware (Full Set)

All items below are included in the R8170 full bolt kit, each supplied in pairs where applicable:

① Hydraulic Hose Bolts (×2)
② Shifter Hose Bolts (×2)
③ Shifter Bleed Screws (×2)
④ Caliper Adapter Bolts (×2)
⑤ Caliper Body Bolts A (×2)
⑥ Caliper Body Bolts B (×2)
⑦ Bleed Screws (×2)
⑧ Pad Retaining Pins (×2)
⑨ Front Caliper Mount Bolts (×2)
⑩ Rear Caliper Mount Bolts (×2)
⑪ Shifter Fixing Bolts (×2)

Key Specifications

• Material: Titanium alloy

• Manufacturing: CNC machined

• Total Weight: approx. 45.13 g / set

• Finish: Anodized (multiple colors available)

Important Installation Notes

• Caliper body bolts, bleed screws, and shifter bleed port screws must be used together with the original factory sealing O-rings.

• Please install strictly according to Shimano original torque specifications.

• This product includes titanium bolts only. Brake calipers, shifters, hoses, and adapters are not included.

Why Choose S-PARTS?

• Designed by riders, for riders

• Trusted by weight-focused road bike enthusiasts

• Precision fit for modern Shimano disc systems

• Clean aesthetics with real performance benefits

Upgrade your Shimano R8170 setup with S-PARTS titanium hardware — lighter, stronger, and built for high-end road cycling.

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.