Description
The Cateye BM-45 bar-end mirror is a compact safety upgrade for Brompton and other compatible bicycles. Its aluminium body and glass lens provide a clear, nearly distortion-free rear view without adding a bulky silhouette to the handlebar.
Key features
- Compact 45 mm round glass lens
- Durable aluminium body
- Minimal projection from the handlebar end
- Suitable for compatible flat and drop handlebars
- Can be fitted on the left or right side where handlebar clearance allows
- 3 mm hex key included
Specifications and fit
- Lens diameter: 45 mm
- Weight: approximately 35 g
- Compatible handlebar internal diameter: 16–25.4 mm
- Recommended tightening torque: 8.5 Nm
- Colour: black
Measure the internal diameter of the open handlebar end before ordering. Brompton fit can vary with handlebar type, grips and any bar-end accessories.
Frequently asked questions
Does the BM-45 fit every Brompton?
Not automatically. It requires an open handlebar end with a suitable 16–25.4 mm internal diameter and enough clearance for the chosen grip arrangement.
Is the lens plastic?
No. The BM-45 uses a glass mirror lens in an aluminium housing.
Buy Cateye accessories in Singapore
808 Cycles is a Cateye Authorised Dealer in Singapore. The listed price is net and includes local delivery within Singapore unless otherwise stated. Browse more Cateye accessories or WhatsApp 808 Cycles for fit advice.
Manufacturer specifications may change without notice.








