Merida Matts J12

2026 YouthGeneral youth Manufacturer page

Suspension: Rigid
Wheels: 12″
Drivetrain: 1 × 1 28t / 16t
Gear range: 100%
Frame: Aluminum
Brakes: Coaster brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

16 parts

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

J12 Alloy Coaster Not identified

Suspension

1 part

Fork

Rigid Steel Not identified

Drivetrain

3 parts

Cassette

16T Not identified
Chain

Z410A Not identified
Crankset

Steel 28T 89L BK Not identified

Brakes

2 parts

Brake levers

Kid Lever Not identified
Brakes

Side Pull / Coaster in R.Hub. Not identified

Wheels and tires

5 parts

Front hub

Steel NT Not identified
Rear hub

Steel Coaster Not identified
Rims

Alloy Black Not identified
Spokes

Steel UCP Not identified
Tires

Kid Smooth 12 x 2.25" Not identified

Cockpit and contact points

4 parts

Handlebar

Kid Alloy Rise 460 Not identified
Headset

General Not identified
Saddle

Matts kid 16 Not identified
Seatpost

Steel 22.2 Not identified

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 7"

Table

Reach 221mm

Stack 259mm

Wheelbase 583mm

Head angle 70.5°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 12″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	221
Stackmm	259
Top tube lengthmm	300
Seat tube lengthmm	180
Head tube lengthmm	80
Head tube angle	70.5°
Seat tube angle	73°
Chainstay lengthmm	241
Wheelbasemm	583
Front centermm	342
Bottom bracket dropmm	8
Standover heightmm	317
Fork rakemm	30
Stack/reach ratio	1.17

Not published by the manufacturer: Bottom bracket height, Trail, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 1
Smallest sprocket: 16
Largest sprocket: 16
Lowest gear: 21.0 in
Highest gear: 21.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Coaster brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Tire width: 2.25″
Travel: Front: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 12″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.0 km/h
Highest gear: 8.0 km/h

Total gear range 100%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 21.0–21.0 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2026 builds
Specification	This bicycle Merida Matts J12	Merida Matts 6.5 V	Merida Matts 6.5 V (L)	Merida Matts 7.10 D (3X)	Merida Matts 7.10 MD	Merida Matts J. 16
Frame
Frame material	Aluminum	Not informed	Not informed	Not informed	Not informed	Aluminum
Fork material	Steel	Not informed	Not informed	Not informed	Not informed	Aluminum
Bicycle weight	Not informed	Not informed	Not informed	Not informed	Not informed	6.7 kg
Suspension
Suspension configuration	Rigid	Hardtail	Hardtail	Hardtail	Hardtail	Rigid
Drivetrain
Front chainrings	1	3	2	2	2	1
Smallest chainring	28	24	26	26	26	28
Largest chainring	28	42	52	52	52	28
Rear sprockets	1	7	7	7	7	1
Smallest sprocket	16	Not informed	Not informed	12	12	16
Largest sprocket	16	Not informed	Not informed	32	32	16
Lowest gear	21.0 in	Not informed	Not informed	22.3 in	22.3 in	28.0 in
Highest gear	21.0 in	Not informed	Not informed	119.2 in	119.2 in	28.0 in
Brakes
Brake type	Coaster brake	Rim brake	Rim brake	Hydraulic disc	Mechanical disc	Rim brake
Cockpit
Shifting	No shifting	Mechanical	Mechanical	Mechanical	Mechanical	No shifting
Other specifications
Suspension	Rigid	Hardtail	Hardtail	Hardtail	Hardtail	Rigid
Tire width	2.25″	Not informed	Not informed	2.1″	2.1″	1.5″
Travel	Configuration: RigidFront: Additional specification: Not available: Yes	Configuration: HardtailFront: Additional specification: Not available: No	Configuration: HardtailFront: Additional specification: Not available: No	Configuration: HardtailFront: Additional specification: Not available: No	Configuration: HardtailFront: Additional specification: Not available: No	Configuration: Rigid
Wheel size	12″	26″	26″	27.5″	27.5″	16″
Fork spring	Not informed	Coil	Coil	Coil	Coil	Not informed
Bottom bracket standard	Not informed	Not informed	Not informed	Not informed	Not informed	BSA