Brake Caliper Bolt: Steel vs Titanium for Road Disc Brakes

LiuXin

May 27, 2026

Steel vs TiNE titanium brake caliper bolts comparison

The brake caliper bolt is one of the smallest fasteners on your road bike, yet it holds the component responsible for your safety at speed. Whether you are re-installing a caliper after travel or upgrading to titanium, understanding this bolt matters.

Steel vs Titanium: The Caliper Bolt Comparison

Most road bikes ship with steel caliper mounting bolts — strong but heavy. Swapping to Grade 5 Ti-6Al-4V titanium retains the strength while cutting grams across the full brake hardware.

Component	OEM Steel	TiNE Ti	Saved
Disc mount (SL8/S5)	14.2 g	5.9 g	8.3 g
Disc mount (standard)	—	7.5 g	—
Center lock cap (outer)	—	5.5 g	—
Center lock cap (inner)	—	4.6 g	—

The SL8/S5 front disc mount alone drops 8.3 g per side. Add titanium center lock caps and the savings compound quickly.

3 Steps to Replace a Brake Caliper Bolt

1. Remove the Old Bolt

Hold the caliper steady. Back the bolt out with a hex key — do not let the caliper hang by the hose.

2. Inspect and Clean

Check the frame insert for debris or cross-thread damage. Wipe both bolt and mount clean before re-installing.

3. Install and Align

Thread by hand first, then tighten with a torque wrench to the manufacturer's spec. Spin the wheel to confirm the rotor runs clean through the pads.

What to Look for in a Replacement

Not all M6 bolts are the same. Brake caliper bolt replacement must match OEM dimensions — diameter, thread pitch, and length. TiNE CNC-machines each bolt from Grade 5 Ti-6Al-4V to match factory specs exactly. Available in eight anodized colors, they add a personal touch without compromising function.

Shop titanium brake caliper hardware at tinetech.com