GT Power Series Cranks Chromo 4130 Sale

GT Power Series Cranks BMX

GT Power Series Cranks in Chromoly are great quality!
19mm chromoly spindle 48 Spline
175mm Chrome or Black Arms
Chromoly 3pc Arms
Optional American or Mid 19mm BB. The American BB will be the Profile Racing Brand if silver, blue, red or gold bb is selected. If black bb is selected, it will be the Redline or other brand. The American BB is for bb tubing that measures about 2" inside diameter. Mid is a little smaller at about 40mm. Most newer frames are the Mid BB type while Old School BMX frames are mostly American sizing. Almost all 3pc Crank arms accept 9/16" pedals only. 9/16" Pedals only.

We have the GT Power Series cranks in Alloy also available now. The Alloy includes a 22mm spindle. You would need a 22mm BB bearing for this crank.

Mechanic Tip: These cranks arms are LSD and RSD compatible so be careful when you install them because both
arms have a sprocket bolt. You do not want to have to pull them off and start over.

Reproduction of the same GT cranks made in the 1980s
You will need a 19mm BB in the size that your frame takes.
Old School frames will take an American 19mm BB.
New School frames would be Mid 19mm for the most common size.
Mid is simply the size of the American BB without the Cup. So the Mid frame BB shell is smaller by the thickness to the Cup that surrounded the sealed bearing.
Mid BBs have no Cup around the bearing. The downside is the bearings usually get damaged when removed without taking tactical precautions.