Megamo Jakar 30

Name: Megamo Jakar 30
Brand: Megamo

2025 RoadGravel Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €1,699 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 10 30–46t / 11–36t
Gear range: 502%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

11 of 14 identified

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

Gravel AL 6061 Triple Butted, Hydroformed Technology, Internal Cable Routing, Flat Mount Disc 12x142 Not identified

Suspension

1 part

Fork

Carbon Disc Fork, Internal Cable Routing, Flat Mount Disc 12x100 Not identified

Drivetrain

4 parts

Cassette
- Shimano CS-HG50 11–36t
CS-HG50
Crankset

FC 46-30t Not identified
Rear derailleur
- Shimano GRX RD-RX400 10 speeds
RD-RX400RX-400
Shifters
- Shimano GRX ST-RX400
ST-RX400RX-400

Brakes

1 part

Brakes
- Shimano GRX BR-RX400
BR-RX400RX-400

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 376mm

Stack 570mm

Wheelbase 1026mm

Head angle 71.0°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	347	358	376	392	407
Stackmm	529	550	570	600	632
Top tube lengthmm	494	515	545	575	600
Seat tube lengthmm	415	500	530	570	590
Head tube lengthmm	105	125	145	175	210
Head tube angle	70°	70.5°	71°	71°	71°
Seat tube angle	74.5°	74°	73.5°	73°	73°
Chainstay lengthmm	430	430	430	430	430
Wheelbasemm	992	1004	1026	1051	1078
Front centermm	572	584	606	631	657
Bottom bracket dropmm	70	70	70	70	70
Bottom bracket heightmm	279	279	279	279	279
Fork rakemm	50	49	51	49	50
Trailmm	74	72	66	68	67
Stack/reach ratio	1.52	1.54	1.52	1.53	1.55

Not published by the manufacturer: Standover height, 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: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 30
Largest chainring: 46
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 24.2 in
Highest gear: 121.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 45c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

24.2 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Highest gear

121.3 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2025
Sample: 1,536 bicycles with this information
Coverage: 76.6% of the class

Shifting

Mechanical

688 of 1,999 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2025
Sample: 1,999 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.3 km/h
Highest gear: 46.4 km/h

Total gear range 502%

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: 24.2–121.3 gear inches
Class reference (p10–p90): 22.8–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2025
Lowest gear: 1536 bicycles with this information, 76.6% of the class
Highest gear: 1536 bicycles with this information, 76.6% of the class

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 2025 builds
Specification	This bicycle Megamo Jakar 30	Megamo Jakar 20	Megamo Jakar 30 Equipped	Megamo Jakar 30 FLAT-BAR	Megamo Jakar FLAT-BAR
Drivetrain
Front chainrings	2	1	2	1	1
Smallest chainring	30	40	30	40	40
Largest chainring	46	40	46	40	40
Rear sprockets	10	12	10	10	10
Largest sprocket	36	50	36	48	48
Lowest gear	24.2 in	23.2 in	24.2 in	24.2 in	24.2 in
Highest gear	121.3 in	105.5 in	121.3 in	105.5 in	105.5 in