S-Parts TC4 Titanium Bottle Cage Bolts (Countersunk Head)

Twin Pack (2pcs) — M5 x 12mm — Torx T20

This is the easiest upgrade on the bike — and one of the most satisfying.

S-Parts titanium bottle cage bolts are the kind of detail that instantly cleans up a build. You lose the cheap-looking steel hardware, drop a few grams, and replace it with low-profile, corrosion-proof titanium that stays looking fresh forever.

Simple part. Proper finish.

Why these bolts?

Because stock bottle cage bolts are usually:

• heavy

• soft

• and the first thing to rust

These aren’t.

Made from S-Parts TC4 Grade 5 titanium, they’re built for riders who care about the small stuff — the ones who notice when the bolts match the rest of the bike.

Weight Check

• S-Parts (pair): 2.18g

• Typical steel (pair): ~7g

Not a “massive” saving — but it’s real weight, and it’s right where your eyes go every time you pick up the bike.

Specs

• Pack Size: 2 bolts

• Thread: M5

• Thread Length: 12mm

• Tool Required: Torx T20

• Weight: 2.18g per pair

• Head Type: Countersunk / low-profile

• Head Diameter: 9.5mm

• Head Height: 2mm

• Material: S-Parts TC4 Grade 5 Titanium

• Finish: Anodized / PVD (corrosion resistant + clean premium look)

Features

• CNC machined for consistent fit and finish

• Up to 40% lighter than standard steel bolts

• Rustproof and built for real-world riding

• Low-profile countersunk head keeps the setup clean

• Works with most standard bottle cages using M5 hardware

Best for

Perfect for:

• Road builds

• Gravel builds

• MTB

• custom / weight-focused builds

• anyone building a bike where the details matter

Why Choose S-Parts Titanium Bolts & Screws?

Small upgrade. Massive difference.

S-Parts are one of the most respected names in titanium bicycle bolts and screws, producing lightweight bike hardware designed for riders who care about performance and finishing detail. Since 2010, they’ve specialised in precision fixings for road, gravel, mountain and performance builds — helping riders reduce weight, prevent corrosion, and finish a bike properly.

Whether you’re chasing grams or building a clean custom colourway, S-Parts is one of the easiest ways to upgrade the details that most bikes leave behind.

With 1000+ bolt and screw options, S-Parts covers everything from cockpit hardware and bottle cages to drivetrain, brake and suspension fixings.

Why Titanium?

Stock hardware works — until it doesn’t.

Titanium is trusted across cycling because it offers an elite balance of:

• low weight

• high strength

• corrosion resistance

• long-term durability

S-Parts components are manufactured from TC4 Grade 5 titanium (Ti-6Al-4V) — an aerospace-grade alloy known for excellent fatigue resistance and strength-to-weight performance.

Many S-Parts titanium bolts and screws offer strength comparable to high tensile steel hardware, while weighing significantly less and staying corrosion-free year-round.

S-Parts Bolt & Screw Colour Options

S-Parts titanium hardware is available in 9 standout colourways:

• Blue

• Black

• Candy

• Gold

• Green

• Indigo

• Purple

• Rainbow

• Titanium

Perfect for matching frames, finishing kits, accent builds and custom upgrades.

How Are S-Parts Bolts & Screws Coloured?

S-Parts uses two proven finishing methods to achieve durable, high-end colourways:

Vacuum Nitriding

Used for:
Black, Blue, Gold, Rainbow

A hard-wearing surface treatment designed for durability and long-term appearance.

Anodising

Used for:
Candy, Green, Indigo, Purple

An electrochemical process that creates vivid colours while maintaining titanium’s natural corrosion resistance.

Measuring Your Bolts & Screws (Important)

Bolt sizing can be confusing — especially when brands measure hardware differently.

For S-Parts products, bolt and screw length refers to the shaft length only:
✅ measured from under the bolt head to the end of the thread.

S-Parts thread sizes range from M3 through to M10, covering the most common bicycle applications.

If you’re unsure what size you need, contact us — we’ll help you match the correct part.

Installation Note

Always follow your component manufacturer’s official installation instructions and torque settings. If in doubt, use a torque wrench and reach out before fitting.

Weights may vary by ±2% due to manufacturing tolerances.

Popular S-Parts upgrades: Titanium stem bolts • Titanium bottle cage bolts • Titanium chainring bolts • Titanium brake caliper bolts

Why Choose S-Parts Titanium Bolts?

Standing out from the crowd has never been this easy!  Founded in 2010 S-Parts are market leaders in the production of custom Titanium bolts for your bike using some of the highest quality materials in the industry. Specialising in bolts for Road, Mountain, Gravel and specialist bikes all bases are covered!  With a dazzling array of colourways a few simple bolt changes can both save weight and dramatically improve the look of your bike!

With over 1000 different products in their range covering fixings compatible with all bike brands you can find a solution to drop some serious weight or simply improve your bikes aesthetics

Why Titanium? Surely my stock bolts are fine?

Titanium is well known for its light weight, durability, superior corrosion resistance and strength.  S-Parts manufactures all their parts from their own TC4 Grade 5 Titanium alloy. Their TC4 bolts are manufactured to equivalent Grade 10.9 High tensile steel but are half the weight and retain a minimum tensile strength of 1000mpa giving you all the benefits if high strength whilst maintaining light weight!! They are the benchmark in terms of strength and style.

What Colours are available?

S-Parts bolts are available in 9 different colourways:

• Blue 

• Black

• Candy 

• Gold

• Green

• Purple

• Rainbow

• Titanium

• Indigo

How are they coloured?

To achieve these bold colourways two different types of methods are used to create a durable finish. Both Vacuum Nitride and Anodizing processes are used to colour all S-Parts components.  Both techniques are well known for their durability and corrosion resistance while maintaining these extraordinary colourways!

Black, Blue Gold and Rainbow colours are achieved using the Vacuum Nitride Process.

Candy, Green, Purple colours are achieve using the Anodizing Process.

All S-Parts bolts come with a lifetime warranty on the colouring.

Measuring my bolts?

While we try to list as much information as possible underneath every image we hold on the site, sometimes it can be a little confusing where their numbers come from or how the bolts are measured! 

The length of all S-Parts bolts refers to the length of the bolt shaft. So everything below the head of the bolt!

S-Parts bicycle bolt thread widths range from M3 right through to M10.

Please reach out to us if you are unsure of what size you need.

*Always refer to manufacturers' recommended installation instructions and torque recommendations before replacing bolts or components.  If you are at all unsure before installation please reach out to us for any assistance*

*While we try to be as accurate as possible with product weights there may be +/- 2% variance in showing product weights*