Product Description

S-PARTS Grade 5 Titanium External Center Lock Lockring

Built for riders who obsess over weight, detail, and durability, the S-PARTS Titanium External Center Lock Lockring is engineered for modern road, gravel, and mountain bikes using Shimano-style Center Lock rotor systems.

Machined from premium Grade 5 Titanium (Ti-6Al-4V) and weighing only approximately 6.1 grams, this external spline lockring delivers exceptional strength-to-weight performance while adding a refined boutique finish to your wheelset.

Designed with a 44mm external 16-notch tool interface, it is compatible with standard bottom bracket tools such as the Park Tool BBT-9 and other equivalent 16-notch 44mm BB tools.

Product Specifications

Available Colors

• Gold
• Black
• Blue
• Green
• Purple
• Candy Rainbow
• Prism
• Splatter Pop
• Neon Splatter
• Rabbit Camo
• Great Wave
• Jaguar Green-Gold
• Snowstorm
• Topographic Glacier

Premium Surface Finishes

PVD Vacuum Coating (Gold / Black / Blue)

The Gold, Black, and Blue versions feature advanced PVD vacuum nitride coating technology, creating a dense metallic nitride layer bonded directly to the titanium surface.

This process improves surface hardness, wear resistance, and anti-corrosion performance while maintaining deep, vivid color saturation that resists fading under rain, mud, washing, and long-term riding conditions.

Unlike painted finishes, the coating integrates into the material surface itself for superior durability and long-lasting appearance.

Anodized Titanium Finish (Green / Purple / Candy Colors)

The Green, Purple, Candy, and multi-color editions are created using precision titanium anodizing.

Rather than relying on paint or chemical dyes, different oxide film thicknesses alter light refraction on the titanium surface itself, producing naturally vibrant metallic colors unique to titanium components.

The result is a distinctive finish with enhanced corrosion resistance and a premium custom-built aesthetic.

Aerospace-Grade Titanium Performance

S-PARTS uses carefully selected Grade 5 Titanium (Ti-6Al-4V) with average tensile strength exceeding 1050 MPa — significantly above standard industry requirements.

Compared with conventional steel lockrings, titanium provides:

• Extremely high strength-to-weight ratio
• Approximately 40–50% weight reduction
• Excellent fatigue resistance
• Outstanding anti-corrosion performance
• Long-term durability in wet, muddy, and coastal riding environments

Under comparable conditions, the overall mechanical performance is similar to high-grade 10.9 steel hardware while remaining dramatically lighter.

Precision CNC Manufacturing

Each lockring is precision CNC-machined with tight tolerance control to ensure smooth thread engagement, accurate fitment, and secure rotor retention.

The optimized external spline design provides reliable tool engagement during installation and removal, making it ideal for performance-oriented road, gravel, XC, trail, and enduro builds.

Why Riders Choose Titanium Lockrings

• Reduce rotational weight
• Upgrade wheelset aesthetics
• Improve long-term corrosion resistance
• Perfect for custom lightweight builds
• Boutique titanium finish for premium bike projects

A small component that makes a noticeable difference in both appearance and performance.

Package Includes

• 1 × S-PARTS Grade 5 Titanium External Center Lock Lockring

FAQ

Is this an external or internal Center Lock lockring?

This is an external spline Center Lock lockring designed for Shimano-style Center Lock rotor systems.

The lockring uses a standard 16-notch 44mm external tool interface, compatible with tools such as the Park Tool BBT-9.

Its 30mm inner diameter allows compatibility with larger thru-axle hub systems commonly found on modern gravel and MTB bikes.