Shimano Titanium Bolt Kit Installation Guide 105 Ultegra Dura-Ace

The TiNE Shimano titanium bolt kit replaces every steel fastener across Shimano's electronic groupsets — 105 R7170, Ultegra R8170, and Dura-Ace R9270. Installation is a bolt-for-bolt swap with standard hex tools, but the scope differs by groupset level. This guide walks through what you are replacing, where each piece goes, and what to expect on the scale when you are done.

Three Groupsets, Three Weight Classes

The kit is available in three versions matched to your groupset. The titanium hardware is slightly lighter on Dura-Ace than on 105/Ultegra because the Dura-Ace stock setup starts lighter, leaving less steel to replace.

105 owners see the largest reduction — over 108 g — because the 105 groupset uses more steel throughout. Ultegra saves nearly 80 g. Dura-Ace, already the lightest stock option, still drops 54 g.

What Gets Replaced

The kit spans three subsystems within the groupset. Each is a discrete area you can work through during installation:

Shifters (STI levers): The oil tube lock bolts on the shifter bodies, and the oil tube lock bolts on the brake calipers. These are the hydraulic fluid sealing bolts — they seat exactly as the stock bolts do, with no changes to the bleed procedure.

Brake calipers: The bleed port screws and the oil tube lock bolts on each caliper. Four positions per caliper pair, all direct swaps.

Derailleur: The rear derailleur pivot bolt, limit and tension screws, jockey wheel screw, and the front derailleur bolt-and-shim set. These are small fasteners that add up — the pivot bolt alone drops from 8.4 g to 2.0 g on the 105.

Installation Tips

Work one subsystem at a time. Start with the derailleur — it is the simplest area with the most small bolts. Move to the brake calipers next, then finish with the shifter hydraulic bolts so you only open the fluid system once.

Use a torque wrench. Titanium bolts do not need special torque values — follow Shimano's factory specs. But because titanium is lower density than steel, it is easier to overtighten by feel. A torque wrench removes the guesswork.

Keep the stock bolts sorted. If you ever service a Shimano lever under warranty, having the original bolts organized by position makes reinstallation straightforward.

Tip: The titanium kit can be combined with the TiNE SL9 frame bolt kit (8.3 g vs 19.7 g stock) for a Specialized Tarmac SL9 build. The two kits cover different bolt positions — groupset and frame — and stack without overlap.

Material

Grade 5 Ti-6Al-4V, CNC machined, anodized in eight colors: gold, blue, rainbow, silver, black, pink, green, and multi-color. Standard hex keys throughout. No threadlocker required on Shimano factory torque values, but a light application of Ti-prep anti-gall compound on threads that will be removed repeatedly (like the bleed port screws) is good practice.