The Cycle Star 901 is B&M's classic 60 mm bicycle mirror: diminishing shatter-protected glass on an internal bar-end mount, in four mirror-bar lengths. Pick the version that suits your handlebars.

Highlights

  • 60 mm diminishing (convex) glass with shatter protection
  • Four versions: 13 cm, 6.5 cm, 5 cm or no mirror bar
  • Folds in; adjusts in every direction; left or right side
  • Internal handlebar mount, 17.2–20 mm bore

Which one

901 for the longest reach; 901/1 and 901/3 for a medium or short bar; 901/2 only on swept-back bars.

Fitting

Internal handlebar mounting: the aluminium expander plugs into a bar end with a 17.2–20 mm inside diameter (B&M part 401/2SHPB or 401/3SHPB adapts smaller bores). Fits left or right unless stated. Remove the bar-end plug or grip end first.

Choose the version from the dropdown; the price updates to the option you pick.

Busch & Müller lighting and mirrors are covered against defects in materials and workmanship. Damage from crashes, water ingress through an unsealed connection, connecting a DC e-bike light to a dynamo (or a dynamo light to an e-bike supply), and normal wear of brackets, straps and mirror glass aren't covered.

For warranty support, return the item to Tune Cycles with your proof of purchase and we'll manage the claim with the distributor for you. This cover is in addition to your rights under the Australian Consumer Law.

  • 60 mm diminishing (convex) glass with shatter protection
  • Four versions: 13 cm, 6.5 cm, 5 cm or no mirror bar
  • Folds in; adjusts in every direction; left or right side
  • Internal handlebar mount, 17.2–20 mm bore
BrandBusch & Müller
ModelCycle Star
SKU BPW-BM-CS901
Brand Busch & Müller