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BGT-909
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Technical Details
Model No. | BGT-909 |
Material | CNC-Machined 6061-T6 Aluminum alloy |
Mounting Type | ZS (Zero Stack / Semi-Integrated) |
Bearing Typen | High-Precision Sealed Cartridge Bearings |
Steerer Tube Dia. | 28.6mm (1-1/8") |
Stack Height | 23.7mm±1mm |
Product Dimensions | Ф25.4 x 44/ 50 x 30 |
Weight | 136g |
Finish | Corrosion-Resistant Anodized Black |
Sealing System | Dual-Lip Internal Rubber Seals |
Application Scenarios
• High-Performance Road Racing: Designed for competitive road cycling where aerodynamics and weight savings are critical; we recommend a Semi-Integrated system paired with carbon fiber top caps to minimize drag and reduce overall bike mass.
• Off-Road & Mountain Biking (MTB): Built to withstand extreme impact resistance and rigorous mud sealing requirements; a Zero Stack (ZS) or External Cup (EC) configuration with heavy-duty dual-lip seals is ideal for protecting bearings against trail debris and high-pressure washing.
• Daily Commuting & Long-Distance Touring: Focused on low maintenance and long-term longevity for everyday reliability; these setups typically utilize steel cups and high-quality weather sealing to ensure smooth steering across thousands of miles in various weather conditions.
• Custom Bike Builds & Geometry Tuning: Perfect for riders looking to adjust frame geometry (such as slackening the head angle for better downhill stability); specialized Angle Sets (adjustable headsets) allow for precise customization of the bike's handling characteristics.
Product Features / Selling Points
• Ultra-Smooth Rotation: Precision-ground races and high-grade ball bearings minimize friction for effortless steering.
• Weather-Proof Sealing: Multi-lip internal seals prevent water, grit, and salt from corroding the bearings, extending service life.
• Lightweight Durability: High strength-to-weight ratio using aerospace-grade aluminum.
• Aesthetic Customization: Available in various anodized colors (Oil Slick, Matte Black, Gold) to match the bike’s "bling" factor.
• Easy Maintenance: Split-crown race designs or "drop-in" compatibility for tool-free bearing replacement.
Common Questions (FAQ)
• Q: How do I know which headset size I need? A: You need to measure the internal diameter (ID) of your frame’s head tube and the outer diameter (OD) of your fork’s steerer tube (top and bottom). Refer to the S.H.I.S. markings on your current headset if available.
• Q: My steering feels "notchy" or heavy. Is it broken? A: This usually means the bearings are pitted, rusted, or "indexed." It’s time for a cleaning and regreasing, or more likely, a bearing replacement.
• Q: What is the difference between a "Tapered" and "Straight" headset? A: Modern performance bikes use Tapered steerers (wider at the bottom) for increased stiffness. Older or entry-level bikes use Straight 1-1/8" tubes. You must match the headset to the fork type.
• Q: Do I need special tools to install a headset? A: For IS (Integrated), no. For ZS and EC, you ideally need a Headset Press to ensure the cups are seated straight without damaging the frame.
