As per title.
Have a Cannondale SI BB30a crank for sale. Pro-compact gearing (36-52 teeth combination). 170mm crank arm length. Not for fussy buyers. Accommodates up to 11-speed groupsets.
Viewing and dealing at Stadium MRT during office hours and 421 Jurong West Avenue 1 after office hours. Price is firm. Lowballers and cheapskates need not bother.