BMX CRANK ARM 1977 - 170 MONGOOSE MOTOMAG ASHTABULA WEBCO GURNEY REDLINE
THESE CRANKS ARE DATED 1977. THEY ARE BLACK AND 170 IN SIZE, 28 TPI. THEY ARE ALSO STAMPED NU ON THE BEARING CAME WITH MO. I BELIEVE THE MO STAND FOR CHROMOLY. THIS WILL FIT MANY EARLY BMX BIKES. YOU GET EXACTLY CRANK ARM SHOW IN THE PHOTO.
