If your switching frames and are going from a American sized BB to a new Euro BB frame, you'll need this conversion kit in order to use your Profile, Redline, or FSA cr-mo cranks.
Everything you need for Internal Bearing English/European Style bottom bracket frame - Two Threaded Cups, Four bearings, Tube spacers, Cone Spacers, Aluminum Spacers.
The Internal Bearing BB allows you the narrowest Q-Factor (the distance between the pedals) as well as the ability set up your chainline as close to the centerline of the bicycle as possible.
Weighs 5 oz.
Available in black or silver
Made by Profile Racing in the USA!
Product Code: 1916-050