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Bike component fitment: bottom bracket, headset, seatpost, axle

Shell Italian vs Shell T47int: specs compared

Updated 05 September 2026.

4
specs differ

Shell Italian and Shell T47int differ on 4 specs: shell inside diameter, shell width, thread, crank spindles it hosts.

SpecShell ItalianShell T47int
Typethreadedthreaded
Shell inside diameter35 mm threaded boreabout 46 mm bore, cut with an M47 x 1.0 thread
Shell width70 mm85.5 mm, 86 mm and 92 mm
Thread36 mm x 24 TPI, both cups right-hand threadM47 x 1.0 (47 mm outside thread diameter, 1.0 mm pitch), drive-side left-hand
Crank spindles it hosts24 mm (Shimano Hollowtech II), 24/22 mm (SRAM GXP) and 28.99 mm (SRAM DUB) via an Italian-thread BB24 mm (Shimano), 24/22 mm (GXP) and 28.99 mm (DUB) via the matching T47 BB; the 46 mm bore clears a 30 mm spindle

Questions and answers

How do Shell Italian and Shell T47int compare?

Shell Italian and Shell T47int differ on 4 specs: shell inside diameter, shell width, thread, crank spindles it hosts.

Compared here

Italian threaded bottom bracket shell (36 mm x 24 TPI)T47 internal (T47-85.5 / T47-86 / T47-92) bottom bracket shell (M47 x 1.0, 85.5-92 mm)