BUCKLOS BSA Bottom Bracket — Sealed & Ceramic

Smooth Spin, Straightforward Fit
Swapped one of these onto a shop bike a while back — threads went in clean, no shimming needed, and it's still spinning smooth months later.

Sealed or Ceramic — Your Call

BSA threaded · Fits 68/73mm shells · 24mm spindle · Sealed bearing or ceramic bearing options

⚙️ Sealed or Ceramic Bearings

Choose the MH500 or MH530 sealed-bearing versions for everyday reliability, or step up to the MH800 ceramic-bearing version for lower friction.

🔩 BSA Threaded, Wide Shell Fit

Threads into standard BSA shells and fits both 68mm and 73mm widths — no press tools needed.

⚖️ Lightweight Aluminum Construction

Aluminum alloy body keeps weight down, from 104g (MH500) up to 117g (MH530).

📦 Complete Kit

Includes the bottom bracket plus 3 washers for proper spacing on install.

Specifications

A clean, reliable upgrade for a smoother-spinning crank.