Merida Matts J.24+ 2026 - Junior Bike

The Merida Matts J.24+ combines a lightweight aluminium frame, rigid alloy fork, wide 24” tyres and hydraulic disc brakes to give young riders control, grip, and confidence while keeping weight to a minimum.
Key Features
- 6061 aluminium frame, double butted, lightweight build
 - Rigid alloy fork keeps weight low and handling sharp
 - Microshift Acolyte 8-speed drivetrain
 - Tektro HD-J2820 hydraulic disc brakes
 - 24” aluminium wheels for growing riders
 - Maxxis Pace 24x2.10” tyres for grip and control
 - Kids-specific finishing kit for comfort and fit
 - Available with 0% APR finance
 
The Merida Matts J.24+ is designed to give kids the same quality ride feel as adults, but in a package tailored for their size and needs. The lightweight aluminium frame is built with the same care and finish as Merida’s full-size bikes, using double-butted tubing and smooth welds for strength without excess weight. At this size, saving weight is especially important, and the rigid aluminium fork helps keep the bike light and manageable for younger riders.
Oversized 24” wheels are fitted with wide Maxxis Pace tyres, offering more surface contact for grip, cushioning, and stability on mixed terrain. This “plus tyre” setup makes the bike more forgiving and confidence-inspiring, perfect for tackling trails, paths, and family rides. The geometry has been inspired by Merida’s MTB range, giving young riders stability and easy handling.
The drivetrain is a Microshift Acolyte 8-speed system, simple and intuitive with a wide 11-38T cassette to handle climbs and descents. Short-reach trigger shifters are designed for smaller hands, making gear changes smooth and easy. Stopping is handled by Tektro HD-J2820 hydraulic disc brakes, which offer reliable, controlled braking with child-friendly levers and 160mm rotors front and rear.
Finishing kit is junior-specific too, from the narrower 600mm bars to the shorter cranks and scaled saddle, all designed for comfort and control. This bike suits children approximately 129–137 cm tall, giving them a platform to grow their riding skills with confidence.
The Matts J range is built with the same expertise Merida puts into their adult bikes, so you can trust the build quality and reliability. The Matts J.24+ is a bike that’s fun, capable, and easy to ride – giving kids everything they need to enjoy cycling and build a lifelong love for two wheels.
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 24" x 2.4" | 
| Fork | Merida material:TS J. 24+; material: aluminium; 24x2.4" 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; 600mm 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-R; Super short reach; Gear indicator | 
| Speed | 8 | 
| Rims | Merida JR 24+; Material: aluminium | 
| Front Hub | KT-K68F; 100x9mm; 24 Spoke | 
| Rear Hub | KT-K68R-8/9/10S; 135x9mm; 24 spoke | 
| Spokes | Black steel | 
| Front Tyre | Maxxis Pace; 24x2.10"; wired | 
| Rear Tyre | Maxxis Pace; 24x2.10"; wired | 
| Seat Post | Merida Comp CC; 27.2mm diameter; in-line; material: aluminium | 
| Saddle | Merida Expert JR | 
| Chainset | Prowheel A10PP; 32 tooth chainset; material: aluminium; Crank length: 127mm | 
| Bottom Bracket | Squared LL116 | 
| Chain | KMC Z8.3 | 
| Cassette | Microshift CS-083; 11-38 teeth; 8 speed | 
| Pedals | VP VPE-229 | 
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.24+ 2026 - Junior Bike
Pre-Order
- We are expecting this to become available on December 8thCycle 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.
Here at Tredz, we accept Cycle to Work vouchers from all national schemes. For more information click here.
We understand that the Cycle to Work process can be a little slower than we would all like - so to help you pick the perfect ride, we're now offering FREE Cycle to Work Reservations on any in stock bike (T&C's apply). Simply speak to a member of our Online Bike Experts Team via Live Chat to discuss your reservation. Find out more here.
At Tredz we make finance easy. You can choose from a range of flexible finance repayments from 6 months up to 48 months, choose to place a deposit and pay the balance on finance. Go with a 0% APR finance deal with absolutely no interest on payments, or a 9.9% APR Buy Now Pay later option with a choice of 12 or 24 deferred payment options, or a longer-term 14.9% APR option with lower monthly payments. For more information click here.
We offer a fast, high-quality delivery service with flexible options to suit your schedule - including free delivery* over £30, next day delivery, Click & Collect, and now 24/7 InPost locker delivery for qualifying orders. Learn more about InPost
*Courier deliveries to Northern Ireland, Isle of Man, Isle of Wight, Channel Islands and the Scottish Highlands/Islands will incur a charge.At Tredz, we’re committed to bringing you the best products at the best prices. If you find a product cheaper elsewhere, simply contact us for an immediate response using our live chat service. Click here to discuss your price match with an agent now for help.
Subject to Terms and Conditions
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 90 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.
To help you get started we have put together a handy Bike Building Guide, click here.