A Colnago C64 (2018 to 2021) frame uses a Italian threaded bottom bracket shell (36 mm x 24 TPI). The dimensions, which cranks fit, and the exact bottom bracket to buy.
Updated 05 September 2026.
What bottom bracket does a Colnago C64 (2018 to 2021) use?
The bottom bracket shell standard on a Colnago C64 (2018 to 2021), and how to pick the right BB.
| Frame | Colnago C64 (2018 to 2021) |
|---|---|
| Shell standard | Italian threaded (36 mm x 24 TPI) |
| Shell inside diameter | 35 mm threaded bore |
| Shell width | 70 mm |
SPINDLE see table
The Colnago C64 (2018 to 2021) uses a Italian threaded bottom bracket shell (36 mm x 24 TPI), a 35 mm threaded bore, 70 mm wide.
It is a threaded shell (36 mm x 24 TPI, both cups right-hand thread), so the bottom bracket screws in rather than presses. Confirm the shell width before buying, because the same thread is cut in more than one width.
SOURCES: The Pro's Closet, Bottom Bracket Identification Guide · Park Tool, Bottom Bracket Standards and Terminology
Questions and answers
What bottom bracket does a Colnago C64 (2018 to 2021) use?
A Colnago C64 (2018 to 2021) frame uses a Italian threaded bottom bracket shell (36 mm x 24 TPI).