20 Inch Folding Bike Rims 7.5mm / 8.0mm Assembly Hole Dia For Kids Road Bike

Product Details:
Place of Origin: Xiamen
Model Number: BMXE203823C
Payment & Shipping Terms:
Minimum Order Quantity: 10 pieces
Packaging Details: Carton boxes: 10 pieces rim ( 50 * 31 * 50 CM )
Delivery Time: In 15 work days
Payment Terms: T/T , Western Union , MoneyGram , PayPal
Supply Ability: 500 pieces per months

Detail Information

Rim Type: 20 Inch Bicycle Rims Rim Depth: 38 Mm
Rim Width: 23 Mm Weight: 320g + / - 15g Per Pieces
Appearance: UD / 3K , Matte / Glossy OD: 461 Mm
ERD: 397 Mm Advantage: With Basalt Brake Surface
High Light:

kids bike rim


road bike rims 700c

Product Description

20 inch bicycle rims 451 carbon rim 38mm depth 23mm width for kids road bike


Rim type 20 inch bicycle rims
Size 451
Material Full toray carbon
Finish UD / 3K / 12K , Matte / Glossy
Rim Depth 38 mm
Rim Width  23 mm
Tyre Clincher
Weight 320g + / - 15g per pieces
Spoke Holes 28H , 32H 
Available Folding bike rim / Kids bike rim


20 Inch Folding Bike Rims 7.5mm / 8.0mm Assembly Hole Dia For Kids Road Bike 0




· Rim: For 20 inch 451 wheel

· ERD: 397mm

· OD: 461mm

· Assembly Hole Diameter: 7.5mm / 8.0mm

· Spoke Hole Diameter: 4.5mm / 2.5mm

· Valve Hole Diameter: 6.5mm / 8.5mm

· Max Spoke Tension: > 300kg

· Ultimate Strength: >200kg

· Tension Strength: > 50kg


20 Inch Folding Bike Rims 7.5mm / 8.0mm Assembly Hole Dia For Kids Road Bike 1

1. Lower Starting Price and More Stable Ride


20 inch folding bikes are suitable for 5-8 years old children, who are taking their first tentative steps into the world of serious bikes. 20-inch wheels are considered a good balance between folded size and performance.


2. Basalt Brake Surface


Assure the rim to well anti-heated for long time riding, to increase braking performance and durability, and greatly improve the braking performance of the wheelset in rainy days or wet conditions.


3. Painting and Decaling Service


We accept custom decal and painting design work. We also have professional experience decal designer to help you finish your design work.


4. Folding Bikes and Children’s Bikes compatible


We also provide wheel assemble service, but only for wholesale. Please feel free to contact with me about wheels details. Thank you very much.


20 Inch Folding Bike Rims 7.5mm / 8.0mm Assembly Hole Dia For Kids Road Bike 2


Learn more about 20 inch wheel kids' bikes


20 inch wheel kids' bikes signify a coming of age for that children who are now taking their first tentative steps into the world of serious bikes.


These bikes feature geared drivetrains, stronger frames and stiffer wheels, often fitted with knobby tyres. It's time to explore.


In effect, most of the 20 inch wheels bikes are 'junior mountain bikes' - 20 inch wheel mountain bikes are ideal for all terrain adventures; they are robust, lightweight, and have a wide range of gears, to ensure your child is riding comfortably and safely at all times.


Braking on these bikes comes from V-brakes or disc brakes; with the latter providing more stopping power, but being more costly. Flat pedals are fitted to all these kids' bikes, and the ones on 20 inch child bikes have a larger profile, to accommodate larger feet.



Guide to Kid Bike Sizes


The first step in picking a bike is getting the right size. Where adult bikes are sized by the frame (measured from the center of the bottom bracket to the top of the seat tube), bikes for children are sized by their wheels: 12”, 16”, 20” and 24”. The bike should fit the child. The rider should be able to dismount and comfortably straddle the bike flat footedly. And then with a slight lean of the bike, get their bottom back onto the seat, put their foot on the pedal and, when the skill is there, ride away. They shouldn’t be riding scrunched up with their knees hitting the handlebars and they shouldn’t be stretched out and unable to turn the handlebars easily. At the slow speeds that kids start out riding at, steering by turning the handlebars is much more of an element of riding than at faster speeds where steering is done largely by leaning. If there are training wheels on the bike, all of the steering is done with the handlebars.


Approximate Age Child's Inseam Wheel diameter
( bike size )
2-4 years 14-17 inches
35-42 cm
12 inches
4-6 years 16-20 inches
40-50 cm
14 inches
5-8 years 18-22 inches
45-55 cm
16 inches
6-9 years 20-24 inches
50-60 cm
18 inches
7-10 years 22-25 inches
55-63 cm
20 inches
9+ years 24-28 inches
60-72 cm
24 inches


The size doesn't have any relationship to a real measure: It is certainly not the diameter of the rim. Generally the given size is closer to the tire/tyre diameter from tread-to-tread, but it is usually greater that this distance as well.


20 Inch Folding Bike Rims 7.5mm / 8.0mm Assembly Hole Dia For Kids Road Bike 3


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