Profile American Bottom Bracket | 19mm & 22mm BMX BB Conversion Kit for 3-Piece Cranks
AMERICAN HOP UP BOTTOM BRACKET 19MM & 22MM
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Stacked Official word:
The profile Racing sealed Hop Up American bottom bracket has sealed bearings for a 19mm or 22mm spindle. Made for any bmx bike or bike life bike with a American bottom bracket. Simple and easy to install. Includes an assortment of spacers to optimize chain line and crank clearance. You can use it with 68mm or 73mm spacing bb. If you need great quality bearings for some new cranks or upgraded cranks these will have you rolling smooth.
Product Description
Upgrade your drivetrain with the Profile American Bottom Bracket, a premium profile racing American bottom bracket built to convert classic American frames to modern 3-piece crank setups. Whether you need a profile American bottom bracket 19mm or a profile 22mm American bottom bracket, this kit delivers smooth spinning performance, tight tolerances, and long lasting durability.
Designed to fit the traditional American bottom bracket size, this kit includes precision American bottom bracket cups, high quality bmx bottom bracket bearings, and the spacers you need for a clean install. It’s the perfect American bottom bracket conversion kit for riders upgrading from one-piece cranks to an American bottom bracket 3 piece crank setup.
Compared to lower quality options, the profile American bb runs smoother, lasts longer, and keeps your drivetrain dialed through hard sessions. If you’re building or restoring a BMX, cruiser, or big BMX bike, this is the bmx bike bottom bracket upgrade that makes a real difference.
Works great alongside other setups like profile mid bottom bracket 19mm conversions, and is a must have when dialing in different bmx bottom bracket sizes across builds.
👉 Upgrade your drivetrain today at www.stackedbmx.com
Product Use
The profile American bottom bracket is used to install 19mm or 22mm 3-piece cranks into frames that use the American bottom bracket size, converting older or stock setups into modern, smoother running systems.
Why BMX Riders Use It
BMX riders use the profile American bb to get smoother crank rotation, stronger bearing support, and better compatibility with modern cranksets, especially when upgrading from stock or worn out components.
Profile word:
-For use on frames with American BB shells.
-Formerly known as the American Bottom Bracket with Hop Up Kit.
-Gives your Profile crankset that “finished” look.
-Includes cups, sealed bearings, tube spacer, cone washers, and flat washers.
5 Problems You’ll Run Into Using Other Bottom Brackets
• Rough or grinding bearings that slow down your drivetrain
• Loose fitting American bottom bracket cups that creak or shift
• Short lifespan from low quality bmx crank bearings
• Poor compatibility across different bmx bottom bracket sizes
• Frequent maintenance due to weak seals and hardware
5 Reasons the Profile American Bottom Bracket Is Better
• Precision bmx bottom bracket bearings for smooth, fast rotation
• Strong, accurate fit for the American bottom bracket size
• Available in American bottom bracket 19mm and 22mm options
• Reliable bmx bottom bracket conversion kit for 3-piece cranks
• Built by Profile Racing for long-lasting BMX performance
Specs
Outer size: American
inner size: 19mm or 22mm available
tube spacer: 6061 T-6 aluminum
cone material: machined 6061 T-6 Aluminum
Non drive side cone thickness: 10mm
Drive side cone thickness: 5mm
Spacers: 4 x 2.5mm 4 x 5mm
weight: tba
Shipping: THIS ITEM ONLY SHIPS USPS, FEDEX or UPS GROUND. Free shipping is available on this item. More shipping info here.
Top 10 Questions & Answers About the Profile American Bottom Bracket
What is a Profile American bottom bracket?
It’s a high quality profile racing American bottom bracket designed to fit American BB shells and run 3-piece cranks with smooth, durable bearings.
What sizes are available?
You can choose between profile American bottom bracket 19mm and profile 22mm American bottom bracket options depending on your crank spindle size.
What does an American bottom bracket conversion kit do?
An American bottom bracket conversion kit allows you to run modern 3-piece cranks in older American BB frames.
What is the American bottom bracket size?
The American bottom bracket size is larger than mid or euro BBs and requires press in cups to hold bearings.
Is this compatible with all BMX bikes?
It fits bikes with an American BB shell, for others, you may need a bmx euro bottom bracket or mid BB.
Does it include bearings?
Yes, it includes high quality bmx bottom bracket bearings designed for durability and smooth rotation.
What cranks work with this bottom bracket?
Any 19mm or 22mm spindle American bottom bracket 3 piece crank will work depending on the version you choose.
How long do BMX crank bearings last?
With proper care, quality bmx bike crank bearings like these last significantly longer than stock options.
Do I need special tools to install it?
Basic tools help, but a bmx crank bearing tool or press makes installation easier and safer.
Is this better than stock bottom brackets?
Yes, it offers smoother performance, longer life, and better fit compared to most stock bmx bottom bracket setups.
