Headset bearings restore smooth steering and correct alignment for compatible Trek frames. Riders who demand precise handling and reliable headset performance will notice steadier control and reduced play on everyday rides. Are Ollanoos Bicycle Headset Bearings the right replacement for Trek Domane, Émonda and Madone knock block systems?
⚡ At a Glance
- • Durability: Steel construction engineered for long-lasting performance and reliable operation
- • Best for: Owners of Trek Domane, Émonda and Madone needing direct-fit headset replacements
- • Not ideal for: Bikes requiring sizes other than the listed upper and lower dimensions
Upper and lower steel bearings are supplied as a matched pair for Trek knock block systems. Upper: 30.15x41x6.5mm, 36/45°; lower: 40x51x6.5mm, 36/36°.
Smooth, predictable steering - with steel upper and lower bearings
Steel components form the bearing surfaces and are engineered to reduce friction while maintaining headset alignment during steering movements.
Steadier control and reduced play in turns, improving confidence on road and club rides.
Direct replacement for Trek knock block systems - with specified upper and lower sizes
Upper and lower dimensions are supplied to match Trek knock block fitment for Domane, Émonda and Madone frames, allowing a direct swap where those sizes are required.
Quickly restore correct steering geometry without sourcing alternative bearings or adaptors.
Hassle-free maintenance - with easy installation and pair packaging
Packaged as two bearings, upper and lower, and designed for easy installation without the need for specialised tools or expertise.
Replace both bearings in a single session, making routine headset maintenance faster and simpler.
✨ The 4 Key Reasons for Ollanoos Bicycle Headset Bearings
- Trek fitment confirmed, Ensure straightforward compatibility with Trek knock block headset standards
- Paired upper and lower set, Eliminates fitment guesswork, enabling one maintenance session replacement
- Precision sizing, Supports correct headset alignment and reduces steering play post-install
- Easy swap installation, Both bearings supplied for quick workshop or roadside servicing
📋 Technical Details at a Glance
- Category: Bicycle headset bearings
- Brand: Ollanoos
- Fitment: Replacement for Trek Domane, Émonda, Madone bikes
- Function: Smooth steering and handling, reduce friction and ensure alignment
- Material: Steel components
❓ Frequently Asked Questions
Q: Are these bearings compatible with Trek Domane, Émonda and Madone frames?
A: Yes, they are listed as replacement headset bearings for Trek Domane, Émonda and Madone bikes, intended for knock block systems.
Q: What sizes are included in the set?
A: The set includes an upper bearing sized 30.15x41x6.5mm with a 36/45° angle, and a lower bearing sized 40x51x6.5mm with a 36/36° angle.
Q: Do the bearings come as a pair and require special tools to fit?
A: The package includes both upper and lower bearings, and they are designed for easy installation without the need for specialised tools or expertise.
🏆 Our Verdict
Suitable for riders and mechanics who maintain Trek Domane, Émonda and Madone headsets, and who need a direct-fit replacement. Matched upper and lower steel bearings deliver a practical repair option that restores steering alignment and reduces play. The pair represents sensible long-term value for maintenance-focused cyclists seeking reliable headset performance.
