Best Kids Bike Bottom Brackets in 2026
Daisy
Last Updated: Aug 2, 2026
Daisy
Last Updated: Aug 2, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Bicycle Addiction | 9.95 | ✅ | ✅ | ✅ |
14 g lighter than SM-BB6700
smoother than SM-BB6700 (50 % less friction)
small ball bearings keep weight low
bearing cups anodized
recommended for Ultegra FC-R8000, FC-6800, 105 FC-5800, Metrea FC-U5000, FC-CX70
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Planet Cyclery | 9.81 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Cycle Sport USA | 9.39 | ❌ | ❌ | ❌ |
Sealed cartridge bearings
Includes cups, bearings, and inner sleeve
Weight: 92 grams
Spindle Interface: Shimano Hollowtech II
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Sheepshead Cycle | 9.76 | ❌ | ❌ | ❌ |
Material: [cups] aluminum
Shell Width: [English] 68 mm, [Italian] 70 mm
Threading: English, Italian
Manufacturer Warranty: 3 years
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Edison Cycle Co | 9.85 | ✅ | ✅ | ✅ |
Fits JIS square-taper cranksets
Crankarm fixing bolts sold separately
Hollow spindle
50mm chainline
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| 365 Cycles | 9.67 | ❌ | ❌ | ❌ |
Also fits most other 24mm spindle external mountain BB systems
24mm X-Type
68/73mm wide
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Thinvik | 9.85 | ✅ | ✅ | ✅ |
【Compatible With】Work for 68mm BSA bike thread bottom. Compatible with Shimano BB-UN26/BB-100/BB-101/BB-300.Please purchase according to the original length, the length error is applicable within 2mm.108/110/113/116/118/122.5/127mm for choose.
【Superb Material】High class quality,the bottom bracket is solid and durable with a long service time.Sealed bearing assembly provide better sealing and lubrication performance.
【Protect Bike Frame】Integrated System of this square taper bottom bracket can protect the frame, more power output, it's better than ordinary structure bottom bracket. The weight is very light and does not impose an extra burden on the bicycle.
【Save Effort】The square taper bottom bracket has fine workmanship, precision threads can be better connected, 2 Bearings structure makes the spindle more flexible and less labor-intensive.
【Professional Service】We provide perfect customer service, you can buy with confidence. If you have any questions about our products, you can feel free to contact us.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| BikeWorldUSA | 9.72 | ❌ | ❌ | ❌ |
Bearings & cups for one-piece cranks
68mm bottom bracket shell width compatible
24 TPI Treads
Pair of 9 ball bearings contained in steel race
Steel construction
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Hoypeyfiy | 9.83 | ✅ | ✅ | ✅ |
High class quality and very durable, brand new and well packed.
Fit for BB-UN26 68*123, 68*127, 68*110mm Square Taper Bottom Bracket.
Interface: Square Taper, Shell Size: 68 millimeter, Bearings: Steel.
Package Includes: 1x Square Taper Bottom Bracket.
We provide perfect customer service, you can buy with confidence. If you have any questions about our products, you can feel free to contact us.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Jaceyon | 6.72 | ✅ | ✅ | ✅ |
【Application:】: This kind of ball bearing stainless steel ball inlaid in the retainer design,It is a bicycle parts, it's suitable for replacing the crank bearing of the bicycle.
【Dimensions and specifications】:OUTER DIAMETER: 1.46 inch, INNER DIAMETER: 0.94 inch, BALL DIAMETER: 5/16 inch. Please confirm whether this size is suitable for your bicycle before you buy them!!!!!!!!!!!!!!
【Material】: This ball bearing retainer made of steel, high quality, durable and high intensity.
【Widely usage】: This beads rack for bike parts replacement, suitable for ordinary bicycles, mountain bikes, kids bicycle, lowrider bikes, stretch bicycles.
【Satisfaction guarantee】: Your purchase is fully protected when you order today. If you are not satisfied with with our products, contact us any time, We will get you back within 24 hours try our best to make things right.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| CYCLE4LESS | 9.43 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Wheel & Sprocket | 9.71 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Bike Heaven | 9.61 | ❌ | ❌ | ❌ |
Available Colors: Chrome, Black, Gold
Available Sizes: 5/16 x 7, 5/16 x 9
Sold as Set of 9 Pieces
For 1 PC Crank
Fits Most Beach Cruiser, Lowrider, Chopper Bike Frames
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Planet Cyclery | 9.81 | ✅ | ✅ | ✅ |
Material: [cups] aluminum, [bearings] 6806 stainless steel, [inner sleeve] plastic
Shell Type: English threaded (BSA)
Shell Width: 68/73mm
Claimed Weight: 3.1oz (87g)
Manufacturer Warranty: 1 year
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Bell's Bike Shop | 9.67 | ❌ | ❌ | ❌ |
Bearings & cups for 3-piece cranks. Includes right & left cup, lockring & bearings.
68/73mm
English Thread
Steel
123g
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| GreenUCT | 9.59 | ✅ | ✅ | ✅ |
PREFERRED BICYCLE TOOL: Great installation and removal tool kit for your bike bottom bracket.
HIGH QUALITY MATERIALS: Constructed of aluminum alloy and stainless steel, very durable.
SUITABLE BEARINGS: Suitable bearings: 6805 (25x37x7), 6806 (30x42x7).
INSTALLING FOR MOST MODELS: Suitable for removing BB86/BB30/BB91/BB92/PF30 press-fit type bottom brackets, and installing most hollow threaded bottom bracket bearings.
DIVERSE CHOICES: The functions of the simple version is the similar to the professional version and most accessories are the same. The professional version is equipped with stainless steel handle that makes it easier and stable for installing.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Lanturn | 5.46 | ✅ | ✅ | ✅ |
【Bearing Size】:OUTSIDE DIAMETER: 1.14 inch/29mm, INSIDE DIAMETER: 0.7 inch/18.4mm, BALL SIZE: 1/4 inch x 9 balls.Please confirm the size before purchase!!!!!!!
【Package Include】4 Pieces Bicycle Crank Bearing 1/4" ball size x 9 balls. One pair of crank bearings for replacements, another for spare.
【Widely usage】:This ball bearing retainer for bike parts replacement, suitable for bicycle crank, such as: mountain bike, kids bicycle, lowrider bike,children’s bike, stretch bicycles.
【Item Feature】: This ball bearing retainer with 9 balls, which suitable for bicycle bottom bracket.It is an ideal replacement for your bike.
【Satisfaction guarantee】 We really hope you like our products, If there are any problems about the product, please contact with us at any time, we provide customer satisfying services.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Vidoo | 9.60 | ✅ | ✅ | ✅ |
High Quality-The bottom bracket is made of stainless steel, solid with a long service time. Light weight, no additional burden.
compatible with Size-Suitable for 80/100mm frame shell. Cups thread size and pitch 34.798mm 1.37 * 24TPI.Please use the BB tool to install and replace the bottom bracket for safety.
Integrated System-Integrated system can protect the frame, more power output, it's better than ordinary structure bottom bracket. With two screws, easy to install.
More Practical-The steel shell can absorb roundness tolerance for the valves ports of Bracket Bottom.
Guarantee-If you have any questions about our products, please send us an email and we will get back to you as soon as possible within 24 hours.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Vidoo | 9.60 | ✅ | ✅ | ✅ |
The bottom bracket is solid and durable with a long service time. Suitable for 68mm frame shell. Please confirm the size before purchase.
The steel shell can absorb roundness tolerance for installing ports of Bracket Bottom. Please use the BB tool to install and replace the bottom bracket for safety.
Integrated System can protect the frame, more power output, it's better than ordinary structure bottom bracket. The weight is very light and does not impose an extra burden on the bicycle.
Fine workmanship, precision threads can be better connected, 2 Bearings structure makes the spindle more flexible and less labor-intensive.
If you have any questions about our products, please send us an email and we will respond to you within 24 hours. Thank you for your interest in our products.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| DONSP1986 | 8.49 | ✅ | ✅ | ✅ |
2" Cup Bottom Bracket Set,One-Piece Bottom Bracket Cup Set Bearings Included,Silver
Fits on most bikes such as beach cruiser, lowrider,chopper bike frames
For one-piece crank ,Material: steel
Measure the diameter of bottom bracket shell before shoping, if it is exactly 2", then bottom bracket bearings set should fit.
Bearings and cups for one-piece crank
Threaded size of the cup is 15/16inch*24
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| CDHpower | 9.70 | ✅ | ✅ | ✅ |
The Conversion Kit/Crank Set is NOT compatible with 2 inch/50mm-51mm(inner diameter) BOTTOM BRACKET(refer to the third picture)
Compatible with 44mm(Outer Diameter) bottom bracket; Outer diameter of 2 cups: 34.5mm/1.358 inch which is compatible with 44mm OD bottom bracket (refer to the Fourth picture)
Also can be used on 2 stroke 66cc/80cc motorized bicycle(pls measure yours BB before shopping), the length of the crank is 266mm/10.47inch.
This conversion kit end up as/with a square taper;the crank of kit is same as the crank that comes with the 4 stroke gas motor kit(if your 4 stroke gas motorized bicycle was installed with original cranks, you can shopping without doubt, if not same cranks, pls measure yours BB before shopping);
If your bike is with 2 inch bottom bracket like 26" beach cruiser huffy with 51mm bottom bracket, you have to buy a BB Bottom Bracket Conversion converter (American to Euro) from your local shop or from CDHpower Amazon store.(refer to the fifth and sixth pictures pls); Any questions,please contact us firstly! we can help you solve the problem until you are satisfied.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| LUBEN MOON | 6.21 | ✅ | ✅ | ✅ |
PREFERRED BICYCLE TOOL: Constructed of high quality aluminum alloy and stainless steel. CNC turning, anodizing process, very durable! Great installation and removal tool kit for your bike bottom bracket.
FEATURES: The new aluminum alloy material is used to lighten the weight, the bearing joint, the labor-saving operation can be detached, the CNC handle design, the handle knurling process, to ensure the strength and anti-skid, the stainless steel screw, the thread pitch is close and detailed, and the strength is high!
SUITABLE BEARINGS: Suitable bearings for 6805 (25x37x7), 6806(30x42x7), MR22377(22X37X7), MR24377(24X37X7).
WIDE APPLICATION: Applicable to a variety of press-in BB shaft specifications: BB86/ BB30/ BB91/ BB92 and more. Can also be used in PF30/92/386 as well as installing most hollow threaded bottom bracket bearings.
EASY TO OPERATE: This tool well designed,combines a smooth extractor (no hammers and violence) of a press fit bottom bracket and an installation press. Equipped with professional instructions, simple operation, no harm to the bicycle body!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Dymoece | 9.79 | ✅ | ✅ | ✅ |
Size: 110.5mm/113mm/116mm/118mm/120mm/122.5mm/124.5mm/126mm
Sealed cartridge bearing assembly, suitable for 68mm frame shell
BSA integrated design, higher performance
Compatible with shimano BB-UN26 BB-100 BB-101 BB-300 square taper bottom bracket
Package list: 1 * square taper bottom bracket + 2 * screws
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Sheepshead Cycle | 9.77 | ❌ | ❌ | ❌ |
Material: [cups] aluminum, [bearings] steel
Shell Width: 68/73mm
Threading: english
Crankset Compatibility: Hollowtech II
Includes: 3 x 2.5mm spacers
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| NCRdgd | 9.56 | ✅ | ✅ | ✅ |
Thread: BC1.37 x 24T English Shaft Steel.
Bike Bottom Bracket Model: BC-73.
Size: 68 mm x 118mm.
This parts fit for 68mm Bottom Bracket Mountain Bike and Road Racing Bike.
Package List:Sealed Bearings Bottom Bracket + 1 , 1 Pair Waterproof Screw.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Thinvik | 9.85 | ✅ | ✅ | ✅ |
Material: Thinvik BSA Bottom Bracket characterize cold-forged and CNC-machined aluminum alloy cups, dual-labyrinth bearing covers and precision sealed bearings.
Compatibility: Designed for road bike and MTB, they are perfect match 24mm crank spindle.(Not for Sram GXP 22mm,Dub 28.99mm, FSA and other brand 30mm spindle crank)
Shell width: Fit frames with 68/73mm bottom bracket shells
Thread: BC1.37-inch*24T L/R Threaded Connection design enhance lateral stability to avoid creaking sound
Warranty: We offer our clients one year warranty, if you have any problem with the product, feel free to contact us
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Yuehuam2019 | 6.31 | ✅ | ✅ | ✅ |
Please use the BB tool to install and replace the bottom bracket for safety.
Suitable for 80/100mm frame shell.
The bottom bracket is solid and durable with a long service time.
The steel shell can absorb roundness tolerance for installing ports of Bracket Bottom.
Integrated system can protect the frame, more power output, its better than ordinary structure bottom bracket.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| meeqii | 9.67 | ✅ | ✅ | ✅ |
【Solid and sturdy】The bicycle bottom bracke is solid and sturdy, withstand long time using.
【For bracket bottom】 The steel shell can absorb roundness tolerance for installing ports of bracket bottom.
【Integrated system】Integrated system can protect the frame, more power output, it's better than ordinary structure bottom bracket, a must have cycling accessory.
【68mm frame shell】Suitable for 68mm frame shell. Please use the BB tool to install and replace the bottom bracket for safety.
【GUARANTEE 】If you have any questions, please feel free to contact us, we will answer you as soon as possible, if you have any other questions, we will provide a replacement within 180 days.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| meeqii | 9.66 | ✅ | ✅ | ✅ |
Good performance -- Effective waterproofness, the separable rubber gasket can withstand the sliding spacing, resulting in a gapless movement, preventing dust and moisture from bearing, and has good waterproofness.
No lubrication resistance -- There is no resistance to lubrication, the separable rubber gasket has the characteristics of double‑side sliding, which will not increase the resistance to the rotation bearing, and the lubrication is high.
Stable groove sealing -- Groove sealing is strong, and the newly designed end cover greatly improves the sealing performance of the drainage, while reducing the sealing resistance, and the appearance is more high‑end.
Direct crank power transmission -- Aluminum alloy shaft bushing makes the crank power transmission more direct, without plastic elasticity causing power loss and bearing damage, and has better rigidity.
High strength and lightweight -- Aluminum alloy material has higher metal strength, while maintaining the characteristics of lightness, high strength and light weight of aluminum alloy material.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ZUDKSUY~ | 8.92 | ✅ | ✅ | ✅ |
Spindle Interface: Square taper.
Replacement for BB-UN26 68 mm bottom bracket shell. Spindle length: 127mm.
Our square taper bottom bracket is suitable for most mountain bike, road racing bike etc.
Package Include: 1 x Sealed bearing bottom bracket, 2 x Waterproof screws.
If you are unsatisfied with this item for any reason, please feel free to contact us. We will help you to solve problems within 24 hours.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Shimano | 13 |
| Vgeby1 | 6 |
| Jaceyon | 4 |
| Lanturn | 4 |
| Sunlite | 3 |
| Thinvik | 2 |
| Alta | 1 |
| Bucklos | 1 |
| Cdhpower | 1 |
| D Dymoece | 1 |
We've carried out a comprehensive analysis of 9,521 reviews on bike bottom brackets kids, using our selection criteria to identify the best options in the sports apparel & equipment. Our findings reveal that most customers typically select bike bottom brackets kids priced around $20.39, with top brands including shotgun, shimano, lanturn, jaceyon, sram, mtqy, hoypeyfiy, sunlite and ougewood and vgeby1
Our team of expert editors reviewed these high-quality items and handpicked the top 30 bike bottom brackets kids for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the sports apparel & equipment category. These include kids ride shotgun, movatik, lanturn, jaceyon, planet cyclery, mutai, hoypeyfiy, bikeworldusa and cycle4less and luben moon .
We are dedicated to assisting our users in finding the right brackets Products based on their needs, saving them considerable time when choosing which bike bottom brackets kids to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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