Boardman JNR 20" 2025 - Kids Bike
The Boardman JNR 20" is built to help kids progress their cycling skills and enjoy the freedom of exploring their surroundings. Its triple-butted aluminium frame and fork ensure the bike is lightweight and easy to control, while the stable geometry and ample standover clearance give young riders the confidence to tackle new challenges.
Key Features:
- Frame: Lightweight triple-butted aluminium frame with smooth welds for reduced weight and durability
- Front Fork: Smooth-weld aluminium lowers with a Chromoly steerer for strength and precision
- Drivetrain: Shimano 7-speed gearing with a wide 14-28T cassette for easy and efficient pedalling
- Brakes: Tektro J310 mini V-brakes with short-reach levers for reliable and safe braking
- Wheels: 20-inch double-wall alloy rims for strength and durability
- Tyres: Vee Rubber Speedster 20" x 1.5" tyres for excellent grip and rolling efficiency
- Other Feature: Weighs just 8.6kg, making it easy for kids to handle and manoeuvre
- Finance Option: Available with 0% APR finance for flexible payment
Short-reach brake levers and Tektro mini V-brakes make mastering stopping a breeze, giving parents peace of mind when it comes to safety. The Shimano 7-speed drivetrain with a wide-range cassette allows kids to conquer hills and ride further, making it perfect for school commutes, Bikeability sessions, or weekend adventures.
With features like a double-wall alloy rim for durability and premium metallic paint finishes, the JNR 20" combines function and style. At just 8.6kg, it’s one of the lightest bikes in its class, ensuring your child can handle it with ease. The addition of mounting points also means it’s ready for accessories like mudguards or bottle cages, making it versatile for everyday use.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Lighhtweight Triple butted, smooth weld aluminium |
| Fork | 1" Triple Butted, smooth weld aluminium lowers with Chromo Steerer |
| Headset | Semi-Inegrated NECO H124 1" Aheadset |
| Stem | Boardman JNR Alloy 50mm - 10 degree rise |
| Bars | Boardman JNR Alloy - 25.4mm - 500mm wide |
| Front Brake | TEKTRO J310 mini V-Brake |
| Rear Brake | TEKTRO J310 mini V-Brake |
| Brake Lever | TEKTRO, JL-510 short reach |
| Rear Mech | Shimano M310-RD 7 Speed |
| Shifters | Shimano SL-M315 7 Speed |
| Speed | 7 |
| Rims | Double Wall Alloy |
| Front Hub | Formula Alloy QR |
| Rear Hub | Formula Alloy QR |
| Spokes | Steel - Black |
| Front Tyre | Vee Rubber, Speedster 20" x 1.5" |
| Rear Tyre | Vee Rubber, Speedster 20" x 1.5" |
| Seat Post | Boardman JNR Alloy 25.4mm x 250mm |
| Saddle | Boardman JNR |
| Chainset | Prowheel 32 Tooth - 115mm crank and double chainguard |
| Bottom Bracket | FSA. - BB-7420ST |
| Chain | KMC Z7 |
| Cassette | Shimano MF-TZ500 7 Speed 14-28 Tooth |
| Pedals | Wellgo 9/16" |
| Weight | 8.6 KG |
Junior Bike Size Chart
|
Approx. Age |
Height (cm) |
Type / Wheel Size |
|
1 - 4 |
77 – 105cm |
Balance |
|
2 - 4 |
85 – 105cm |
12" |
|
4 - 6 |
105 – 117cm |
14" |
|
5 - 7 |
112 – 125cm |
16” |
|
6 - 8 |
117 – 132cm |
18” |
|
7 - 10 |
125 – 136cm |
20” |
|
10+ |
136+cm |
24” |
Read our kids bike size guide for more information on kids bike sizing.
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Boardman JNR 20" 2025 - Kids Bike
In Stock
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*Courier deliveries to Northern Ireland, Isle of Man, Isle of Wight, Channel Islands and the Scottish Highlands/Islands will incur a charge.At Tredz, if you are not 100% happy with your order, then you can use our simple hassle free returns service. Simply return the item new and unused in the manufacturers original packaging within 365 days of purchase. Bikes and larger items are collected by courier.
When you receive your bike, all you'll need to do is unpack it, attach the pedals, turn the handlebars and ride.
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