25 oz.

Removed from an '89 GT Karakoram K2 mountain bike. Very good condition for age. The inner rings appear to be ovaltech rings (biopace style). Arms: 170mm 110 bcd. Square Taper.

Removed from an '89 GT Karakoram K2 mountain bike. Very good condition for age. The inner rings appear to be ovaltech rings (biopace style). Arms: 170mm 110 bcd. Square Taper.

Removed from an '89 GT Karakoram K2 mountain bike. Very good condition for age. The inner rings appear to be ovaltech rings (biopace style). Arms: 170mm 110 bcd. Square Taper.