Shimano STX RC cranks - circa 1996 - model number FCMC36

Crank is made from aluminium and uses a square taper bottom bracket.

Bolt circle diameter (BCD) of these cranks is 94mm. Chainrings are mounted using 5 bolts.

Interestingly, there are no mounting bolts for the granny ring on the crank arms, it is mounted to the middle ring.

What do they weigh?

For a 175mm set:

  • The driveside crankarm without chainrings weighs 266g.
  • The non-driveside crankarm without chainrings weighs 204g.

Related articles:

Shimano XT 165mm crankset

Quick facts:

Shimano XTR CS-M970 lockring

Aluminum lockring that comes with XTR CS-M970 9 speed clusters - weight 5g. Standard steel lockrings are around 15g so switching to an alu version will save you an easy 10g.

Shimano XTR M9000 Race Brakes


Shimano XT M775 disc brakes

The good

Shimano SM51 Bottom Bracket

For use with Hollowtech MTB cranks. Total weight including 3 spacers 99g.

Shimano Zee Rear Derailleur

Comes in two different versions: