Ahhh, the sweet looking Shimano DX Cranks!
Look at that detail...
o Fluted Spider, o
Two Color Logo, o Adjustable Crank
Length o
HuH, adjustable crank length!
Yup, you heard me right.
Take a look at the photo on the right. That's a close up of the end of the crank where the pedal threads in.
The crank end is beefed up a bit to handle the added adjuster. The adjuster looks to be made out of steel while the crank arm remains aluminum.
On the arm you can see the "SET" mark and the adjuster has the lengths.
These cranks could be adjusted at 170mm, 172.5mm, 175mm, 177.5mm, and 180mm.
Thanks to fellow Old Schooler Kevin Sleater for these images and for being a loyal