Merida Matts J.20+ 2026 - Kids Bike

The Merida Matts J.20+ uses a lightweight aluminium frame, rigid alloy fork, wide 20” tyres and hydraulic disc brakes to deliver grip, control and easy handling in a package designed specifically for younger riders.
Key Features
- 6061 aluminium frame, double butted, lightweight design
- Rigid alloy fork keeps weight low and handling simple
- Microshift Acolyte 8-speed drivetrain
- Tektro HD-J2820 hydraulic disc brakes
- 20” aluminium wheels with child-friendly sizing
- Maxxis Pace 20x2.10” tyres for grip and control
- Flip-flop stem and spacers allow bike to grow with rider
- Available with 0% APR finance
The Merida Matts J.20+ is designed to give younger riders a fun, capable and confidence-building bike without unnecessary weight. At its heart is a lightweight 6061 aluminium frame, built with the same care and attention to detail as Merida’s adult bikes. Double-butted tubing and smooth welds keep the frame strong but light, making it easier for children to handle and control.
A rigid aluminium fork is used instead of suspension, keeping weight down and ensuring predictable handling. The oversized 20” wheels are paired with wide Maxxis Pace tyres that give extra cushioning, grip and control on mixed terrain – perfect for adventurous rides on paths, tracks and trails.
The 1x drivetrain keeps things simple, using an 8-speed Microshift Acolyte system with a wide-range 11-34T cassette to cover both climbs and flats. The short-reach trigger shifter is specifically designed for small hands, with a single-click action to keep gear changes smooth and easy to master.
Braking is handled by child-specific Tektro HD-J2820 hydraulic disc brakes, with 160mm rotors front and rear to ensure consistent stopping power in all weather. Levers are short reach too, so smaller hands can use them comfortably and safely.
Practical details make the bike grow with the rider: the flip-flop stem and headset spacers allow for handlebar height adjustments, extending the life of the bike as children get taller. A junior-specific finishing kit, from the narrower bars to the shorter cranks and scaled saddle, ensures the fit is right for riders between 109–129 cm tall.
The Matts J range is about giving kids the same enjoyment of cycling that adults experience, in a properly designed bike that feels fun and safe. The J.20+ is the perfect step for young riders who want to explore further, gain confidence off-road, and build a love for cycling that will last a lifetime.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | TFS - 6061 aluminium tubing, double butted and technoformed. BSA BB standard, 9mm QR axle standard. Replaceable dropout. Max tyre size 20" x 2.4" |
| Fork | Merida material:TS J. 20+; material: aluminium; 20x2.4" max. tyre size |
| Headset | FSA NO.10P Neck15 |
| Stem | Merida Comp CC; material: aluminium; 31.8 mm diameter; 7 degree rise |
| Bars | Merida Expert JR; material: aluminium; 560mm wide; 25mm rise |
| Front Brake | Tektro HD-J2820; hydraulic Disc brake; short reach with Tektro TR160-52; 160mm |
| Rear Brake | Tektro HD-J2820; hydraulic Disc brake; short reach with Tektro TR160-52; 160mm |
| Rear Mech | Microshift Acolyte Speed Super Short Cage; RD-M5180S; Super short cage |
| Shifters | Rear: Microshift Acolyte Quick Trigger Pro; SL-M6285-ER; Super short reach; Gear indicator; single click |
| Speed | 8 |
| Rims | Merida JR 20+; Material: aluminium |
| Front Hub | KT-K68F; 100x9mm; 20 Spoke |
| Rear Hub | KT-TD7R-M10; 135x9mm; 24 Spoke |
| Spokes | Black steel |
| Front Tyre | Maxxis Pace; 20x2.10"; wired |
| Rear Tyre | Maxxis Pace; 20x2.10"; wired |
| Seat Post | Merida Comp CC; 27.2mm diameter; in-line; material: aluminium |
| Saddle | Merida Comp JR |
| Chainset | Prowheel A10PP; 32 tooth chainset; material: aluminium; Crank length: 114mm |
| Bottom Bracket | Squared LL116 |
| Chain | KMC Z8.3 |
| Cassette | Sun Race M55; 11-34 teeth; 8 speed |
| Pedals | VP-225 |
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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Merida Matts J.20+ 2026 - Kids Bike
Available with supplier
- Usually built & dispatched in 4-5 working daysCycle to Work is a salary sacrifice scheme, where you can save up to 42% off a new Bike and Safety equipment. This means the cost is deducted from your salary as a non-cash benefit, so you save on tax and national insurance.
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When you receive your bike, all you'll need to do is unpack it, attach the pedals, turn the handlebars and ride.
To help you get started we have put together a handy Bike Building Guide, click here.