S-PARTS Shimano Dura-Ace/Ultegra Di2 12speed Titanium Screw Upgrade Ki

S-PARTS Shimano Di2 12-Speed Titanium Screw Upgrade Kit

The ultimate weight-saving refinement for elite road builds. Engineered for riders who demand more than stock perfection, this premium titanium upgrade kit replaces heavy, factory steel hardware to shave every possible gram from your bicycle while adding an elegant, rust-proof, high-performance finish to your drivetrain and brakes.

Technical Specifications

Compatibility: Shimano 12-speed Di2 Disc Brake Groupsets (Dura-Ace R9250/R9270 and Ultegra R8150/R8170)
Material: Aerospace-Grade 5 Titanium (Ti-6Al-4V)
Chassis Finish: PVD Enhanced Coating
Options: Available as Full Kit, Drivetrain Only, or Brake Only packages
Weight: Half the weight of a standard steel bolt—incredibly lightweight
Precision Machining: CNC-cut threads for exact, strip-free engagement with factory componentry

Upgrade Options & Part Counts

Tailor your weight-saving strategy with three specific kit options designed to match your configuration:

For Dura-Ace R9250 / R9270 (12s Di2 Disc):

Full Kit: 36 pieces
Drivetrain Only: 16 pieces
Brake Only: 20 pieces

For Ultegra R8150 / R8170 (12s Di2 Disc):

Full Kit: 38 pieces (Total weight: 72.6g)
Drivetrain Only: 16 pieces (Total weight: 27g)
Brake Only: 22 pieces (Total weight: 45.6g)

Individual Component Weight Breakdown (R8170)

Drivetrain Kit Components (27g total / 16pcs)

Crank Arm Cover Bolt: 3.7g / pc
Rear Derailleur Pivot Bolt: 4.1g / pc
Chainring Bolts: 1.6g / pc
Front Derailleur Mount Bolts: 2.3g / 2pcs
Jockey Wheel Bolts: 0.9g / pc
Derailleur Adjustment Screws: 0.7g / pc

Brake Kit Components (45.6g total / 22pcs)

Calliper Body Bolt A: 4.0g / pc
Calliper Body Bolt B: 3.1g / pc
Shifter Hose Nut: 2.8g / pc
Calliper Hose Nut: 1.5g / pc
Bleed Nipple: 1.5g / pc
Calliper Adapter Fixing Screw: 1.2g / pc
Bleed Screw: 1.2g / pc
Brake Pad Pin: 1.0g / pc

Uncompromising Pro-Tier Strength

While stock Shimano groupsets utilise heavy steel bolts to control manufacturing costs, S-PARTS employs advanced titanium machining to match or exceed factory torque limits at a fraction of the weight. Titanium is natively immune to sweat, road salt, and wet-weather corrosion, ensuring that crucial adjustment screws and bleed nipples will never rust, seize, or strip during mid-season maintenance or precision tuning.

In The Box

- 1 x S-PARTS Titanium Hardware Upgrade Pack (Piece count dependent on selected package)
- Note: Dedicated R9270/R8170 Brake and R9250/R8150 Drivetrain installation manuals are provided digitally for seamless assembly.