FSA Gossamer Crankset 172.5mm BB30 50/34T 110mm BCD Road Double Black Bike

FSA Gossamer aluminum road bike crankset with double chainrings and BB30 spindle.

Arm length is marked 172.5 mm on the back of the crank arm.

Chainring configuration is compact 50/34T, with outer ring marked 50/34T and inner ring marked 34T N10.

Both rings use a 110 mm BCD 5-bolt pattern as printed on the chainrings.

Bottom bracket interface is BB30, with spindle diameter reading on digital calipers of 30.37 mm.

Back of the arm is marked "For double CK-OS6021 Double" with additional codes including A1D5014932, 11E20337, and N 0711 S 172.5.

Logos include FSA, Gossamer, and Full Speed Ahead graphics on the arms and chainrings.

Actual Measurements: Spindle diameter reading on digital calipers: 30.37 mm; weight on digital scale: 790 g.

Includes right and left crank arms with installed 50/34T chainrings only; no bottom bracket, spacers, or additional small parts are included.

Used FSA Gossamer BB30 road crankset with compact 50/34T rings. Arms have moderate cosmetic wear with scratches, scuffs, heel rub and small nicks in the black finish and graphics. Chainrings show use with finish wear, chain marks, light surface corrosion spots and noticeable tooth wear, but all teeth are present. BB30 spindle has marks and grime from installation and removal. Pedal threads and chainring bolts are intact. Barcode decal on the back of one arm is partially torn. Includes only the crankset with installed rings as shown; no bottom bracket, fixing bolts, or spacers.