Best Bike Bottom Brackets for Kids Bikes of 2025
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Bike bottom brackets are an essential component of kids' bikes as they connect the pedals to the frame. They come in different sizes and styles to fit various types of bikes. The bottom bracket is responsible for smooth pedaling and transferring power efficiently from the rider's legs to the wheels. Parents must ensure that their kids' bikes have a properly functioning bottom bracket for a safe and comfortable riding experience. Quality bike bottom brackets for kids' bikes are available in the market, and parents can choose from various brands and materials to suit their preferences and budget.
At a Glance: Our Top Picks
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Top 6 Bike Bottom Brackets for Kids Bikes
Jaceyon Bike Ball Crank Bearing Retainer
The Jaceyon Bike Ball Crank Bearing Retainer is a durable and high-intensity steel ball bearing retainer designed to replace the crank bearings of your bike. With dimensions of 1.14 inches outer diameter, 0.7 inches inner diameter, and 1/4 inch ball diameter, this product is widely used for bike parts replacement and is suitable for kid's mountain bikes, children's bicycles, lowrider bikes, and stretch bicycles.
MTQY 4pcs Bicycle Ball Bearing Retainer
The MTQY 4pcs Bicycle Ball Bearing Retainer is made of strong and durable steel ball bearing cage with 9 balls, suitable for the bottom bracket of various bicycles, including children's mountain bicycles, children's bicycles, low-speed bicycles, and elastic bicycles. With an outer diameter of 1.14 inch and inner diameter of 0.7 inch, it is an ideal substitute for your bicycle.
CustomyLife 4pcs Bicycle Crank Bearings
The CustomyLife Bike Bearings come with four high-quality crank bearings, each featuring nine 1/4" balls. These bearings have an outer diameter of 29mm and an inner diameter of 17mm, ensuring a precise fit for your bicycle. Made from durable stainless steel, they resist rust and wear, providing long-lasting performance on every ride. You can easily replace your bike's axle wheel frame bearing, ensuring a smooth cycling experience. Regular checks and replacements of these bearings can enhance your bike's drivetrain efficiency, making them a great choice for any cycling enthusiast.
Lanturn Bicycle Crank Bearing 5/16" x 7 Balls, 4 Pcs
The Lanturn Bicycle Crank Bearing package includes 4 pieces of 5/16" ball size x 7 balls bearing retainers. It is suitable for bicycle crank bottom brackets and can be used with mountain bikes, kids bicycles, lowrider bikes, children's bikes, and stretch bicycles. The bearing has an outside diameter of 1.46 inches/37.5mm and an inside diameter of 0.94 inches/24mm. It is an ideal replacement for your bike and comes with a satisfaction guarantee.
Lanturn Bike Ball Crank Bearing 4 Pcs
The Lanturn Bike Ball Crank Bearing 4 Pcs are ball bearing retainers suitable for bicycle crank, such as mountain bikes, kids bicycles, lowrider bikes, and stretch bicycles. The package includes four pieces of 5/16" ball size x 9 balls, with one pair for replacements and another for spare. With an outside diameter of 1.74 inch/44.5mm and inside diameter of 1.26 inch/32.5mm, this ball bearing retainer is an ideal replacement for your bike.
Jaceyon Bike Crank Bearing
This Jaceyon Crank Bearing is a high-quality replacement part for your bike's crank bearing or bottom bracket. Made of durable steel with a stainless steel ball design, it provides a reliable and long-lasting performance. With an outer diameter of 1.46 inches, inner diameter of 0.94 inches, and ball diameter of 5/16 inch, please ensure it is suitable for your bicycle before purchasing. This versatile ball bearing is compatible with various types of bikes, including ordinary bicycles, mountain bikes, kids bicycles, and lowrider bikes. It offers smooth operation and helps improve the overall performance of your bike. Plus, with a satisfaction guarantee, you can trust that your purchase is protected. If you have any issues, the Jaceyon team will be happy to assist you within 24 hours.
Frequently Asked Questions (FAQs)
1. Do all bottom brackets fit all bikes?
The 68mm and 73mm dimension measure the width of the bottom bracket on the frame of the bike with no BB installed, simply the width of the shell. Most road bikes that use a threaded bottom bracket measure 68mm wide and most cross country/trail mountain bikes measure 73mm.
2. How do I know what bottom bracket will fit my bike?
To find out the size of bottom bracket needed, measure the inside of the bottom bracket shell in your frame, it will be 73mm, 70mm or 68mm. Some older frames may have Italian threaded bottom brackets, instead of the more modern English.
3. Are bike bottom brackets universal?
However there are many different sizes and iterations according to manufacturer – BB30, PF30, BB90 ,PF86/92 to name but a few – and not all are interchangeable.
During our bike bottom bracket for kids bikes research, we found 24 bike bottom bracket for kids bikes products and shortlisted 6 quality products. We collected and analyzed 6,418 customer reviews through our big data system to write the bike bottom brackets for kids bikes list. We found that most customers choose bike bottom brackets for kids bikes with an average price of $13.01.
The bike bottom brackets for kids bikes are available for purchase. We have researched hundreds of brands and picked the top brands of bike bottom brackets for kids bikes, including Jaceyon, MTQY, CustomyLife, Lanturn. The seller of top 1 product has received honest feedback from 17 consumers with an average rating of 4.9.
Jason Kiser is an editor who lives in California, he previously worked in a travel agency for ten years, which enabled him to travel a number of interesting countries and experience several different cultures along the way. His range of job and travel experiences grant him expertise in hiking, camping, outdoors and fitness.