When it comes to fine-tuning your bicycle, every gram and every detail counts. The Titanium Stem Bolt M6 x 25mm Standard Head Rainbow is engineered for riders who refuse to compromise between high-end performance and custom style. Crafted from premium Grade 5 (6Al-4V) titanium alloy, this bolt provides the exceptional tensile strength required to keep your handlebars securely locked in place, while weighing roughly half as much as a conventional steel fastener. Whether you are racing cross-country, shedding weight from a road cockpit, or upgrading a custom build, this component delivers reliable clamping force under the most demanding riding conditions.
Beyond its impressive mechanical properties, this titanium stem bolt is completely immune to rust and atmospheric corrosion, ensuring your front end remains clean and structurally sound season after season. The striking rainbow anodised finish—often referred to as oil-slick—adds a distinct, premium aesthetic that changes hue depending on the light angle. Supplied individually with a matching washer to distribute load forces evenly across your stem's faceplate or steerer clamp, this bolt features a precision-machined standard Allen key drive that resists rounding out during high-torque installations. It is the perfect blend of structural integrity and visual flair for any discerning cyclist.
Grade 5 Titanium Construction: Manufactured from aerospace-grade 6Al-4V titanium alloy, offering an incredible strength-to-weight ratio that easily outperforms standard steel hardware.
Corrosion Proof: Inherently resistant to rust, road salt, moisture, and sweat, ensuring the threads will not seize and the finish will not degrade over time.
Vibrant Rainbow Finish: Features a durable, multi-toned oil-slick anodised coating that provides a high-end customised look to your bike's cockpit.
Load-Distribution Washer: Comes complete with a dedicated titanium washer to protect your stem surface from scoring and ensure optimal torque transfer.
Precision Hex Drive: Engineered with a clean, standard Allen key head interface to prevent tool slippage and rounded heads during critical assembly.
| Attribute | Specification |
| Material | Grade 5 (6Al-4V) Titanium Alloy |
| Thread Size | M6 |
| Length | 25mm |
| Head Style | Standard Hex (Allen Key Head) |
| Finish | Anodised Rainbow / Oil-Slick |
| Inclusions | Single bolt with matching washer |
| Application | Most standard bicycle handlebar stems and steerer clamps |
✅ The Weight Weenie: You are actively counting grams and looking to shave critical weight from your cockpit without sacrificing structural safety.
✅ The Custom Bike Builder: You want to add a unique splash of colour to your bike to match oil-slick hubs, chains, or frame graphics.
✅ All-Weather Commuters: You ride frequently in rain, mud, or coastal environments and want to permanently eliminate ugly, rusted bolt heads.
✅ Premium Parts Enthusiasts: You appreciate precision-machined, high-tensile fasteners that can handle repeated, accurate torque settings.
❌ Oversized M7 Stem Users: While M6 is the most common size for bicycle stems, some specific brands use M5 or M7 threads; you must check your manufacturer specifications first.
❌ Budget-Focused Builders: If you simply need a cheap, basic fastener and do not care about weight savings or premium rust prevention, standard steel is more economical.
❌ Stealth/Blackout Aesthetics: If you are building a purely stealth-black or raw silver bike, the vibrant rainbow finish will clash with your theme.
Titanium hardware behaves differently to steel. Because titanium is prone to "galling" (friction welding) when threaded into alloy or other titanium parts, never install this bolt dry. Always apply a thin layer of high-quality anti-seize lubricant or a specialised bicycle grease to the threads and under the bolt head before loading it into your stem. When tightening, always use a calibrated torque wrench to bring it to the manufacturer's exact specification—this ensures a permanent hold without damaging your expensive carbon or alloy components!
