RISK RT040 Titanium M6 Stem Top Cap Bolt for Bicycle Headset, 30–50 mm
Stem Cap / Headset Cap Fixing Screws：M6x30/35/40/50mm
Flat Head Stem Cap / Headset Cap Fixing Screw: M6x30mm
Related
Descriptions
The RISK RT040 Titanium M6 Stem Top Cap Bolt is a lightweight and stylish replacement bolt designed for bicycle stem top caps and headset compression caps. Made from titanium alloy, it offers low weight, corrosion resistance, and a premium finish for road bikes, mountain bikes, gravel bikes, folding bikes, and custom builds.
Available in multiple lengths and head styles, the RT040 series includes M6 × 30 mm flat head bolts and M6 × 30 / 35 / 40 / 50 mm cylindrical head bolts, allowing riders to choose the correct size for different stem, headset, and top cap setups.
The bolts are available in Oil Slick, Gold, Black, and Titanium colors, making them suitable for both performance upgrades and personalized bike styling. Each bolt is packed individually in RISK branded packaging.
Note: This product includes 1 bolt only. Stem, top cap, headset cap, handlebar, and other parts shown in images are for display only and are not included. Please install according to the torque specification recommended by the original component manufacturer.
Key Features
- Lightweight titanium alloy construction
- Designed for bicycle stem top caps and headset compression caps
- M6 thread specification
- Multiple length options: 30 mm, 35 mm, 40 mm, 50 mm
- Flat head and cylindrical head options available
- Corrosion-resistant and durable finish
- Available in Oil Slick, Gold, Black, and Titanium colors
- Adds a clean custom look to the cockpit
- Suitable for road bikes, MTB, gravel bikes, folding bikes, and urban bikes
- Individually packed, 1 pc per bag
Product Specifications
| Item | Details |
|---|---|
| Brand | RISK |
| Model | RT040 |
| Product Name | Titanium Stem Top Cap Bolt / Headset Cap Bolt |
| Material | Titanium Alloy |
| Thread Size | M6 |
| Available Lengths | 30 mm, 35 mm, 40 mm, 50 mm |
| Head Types | Flat Head / Cylindrical Head |
| Colors | Oil Slick, Gold, Black, Titanium |
| Quantity | 1 pc / bag |
| Application | Stem top cap, headset cap, compression cap |
| Compatibility | Road bike, MTB, gravel bike, folding bike, urban bike |
| Packaging | RISK branded bag |
Size & Tool Reference
| Type | Size | Head Diameter | Tool |
|---|---|---|---|
| Flat Head | M6 × 30 mm | Approx. 12 mm | 4 mm Allen key |
| Cylindrical Head | M6 × 30 mm | Approx. 10 mm | 5 mm Allen key |
| Cylindrical Head | M6 × 35 mm | Approx. 10 mm | 5 mm Allen key |
| Cylindrical Head | M6 × 40 mm | Approx. 10 mm | 5 mm Allen key |
| Cylindrical Head | M6 × 50 mm | Approx. 10 mm | 5 mm Allen key |
Approx. Product Weight Reference
| Type / Size | Approx. Weight |
|---|---|
| M6 × 30 mm Flat Head | 3.4 g |
| M6 × 30 mm Cylindrical Head | 4.6 g |
| M6 × 35 mm Cylindrical Head | 5.2 g |
| M6 × 40 mm Cylindrical Head | 5.9 g |
| M6 × 50 mm Cylindrical Head | 7.0 g |
Weight is for reference only. Minor variation may occur due to manual measurement and surface finish differences.
Product Options
RT040-1：M6 × 30 mm Flat Head
| Product Option | Color | Quantity |
|---|---|---|
| M6 × 30 mm Flat Head | Oil Slick | 1 pc / bag |
| M6 × 30 mm Flat Head | Gold | 1 pc / bag |
| M6 × 30 mm Flat Head | Black | 1 pc / bag |
| M6 × 30 mm Flat Head | Titanium | 1 pc / bag |
RT040-2：M6 × 30 mm Cylindrical Head
| Product Option | Color | Quantity |
|---|---|---|
| M6 × 30 mm Cylindrical Head | Oil Slick | 1 pc / bag |
| M6 × 30 mm Cylindrical Head | Gold | 1 pc / bag |
| M6 × 30 mm Cylindrical Head | Black | 1 pc / bag |
| M6 × 30 mm Cylindrical Head | Titanium | 1 pc / bag |
RT040-3：M6 × 35 mm Cylindrical Head
| Product Option | Color | Quantity |
|---|---|---|
| M6 × 35 mm Cylindrical Head | Oil Slick | 1 pc / bag |
| M6 × 35 mm Cylindrical Head | Gold | 1 pc / bag |
| M6 × 35 mm Cylindrical Head | Black | 1 pc / bag |
| M6 × 35 mm Cylindrical Head | Titanium | 1 pc / bag |
RT040-4：M6 × 40 mm Cylindrical Head
| Product Option | Color | Quantity |
|---|---|---|
| M6 × 40 mm Cylindrical Head | Oil Slick | 1 pc / bag |
| M6 × 40 mm Cylindrical Head | Gold | 1 pc / bag |
| M6 × 40 mm Cylindrical Head | Black | 1 pc / bag |
| M6 × 40 mm Cylindrical Head | Titanium | 1 pc / bag |
RT040-5：M6 × 50 mm Cylindrical Head
| Product Option | Color | Quantity |
|---|---|---|
| M6 × 50 mm Cylindrical Head | Oil Slick | 1 pc / bag |
| M6 × 50 mm Cylindrical Head | Gold | 1 pc / bag |
| M6 × 50 mm Cylindrical Head | Black | 1 pc / bag |
| M6 × 50 mm Cylindrical Head | Titanium | 1 pc / bag |
Lightweight Titanium Upgrade
Made from titanium alloy for a lightweight, corrosion-resistant, and durable cockpit upgrade.
Multiple Length Options
Available in 30 mm, 35 mm, 40 mm, and 50 mm lengths to suit different stem and headset top cap setups.
Flat Head & Cylindrical Head Designs
Choose between flat head and cylindrical head styles depending on your original top cap design and installation requirements.
Premium Color Finish
Available in Oil Slick, Gold, Black, and Titanium colors to match different bike builds and custom cockpit styles.
Easy Installation
Compatible with standard M6 top cap applications. Use the correct Allen key and follow the torque recommendation from the original component manufacturer.
