Rondo Bogan ST2

2026 RoadGravel Manufacturer page

Suspension: Rigid
Wheels: 29″
Drivetrain: 1 × 11 38t / 11–42t
Gear range: 382%
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM High 165–174
SM Low 165–174
MD High 171–181
MD Low 171–181
LG High 178–188
LG Low 178–188
XL High 185–194
XL Low 185–194

Components

16 of 20 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

Custom formed Tange Champion Not identified

Suspension

1 part

Fork
- Rondo

Drivetrain

7 parts

Bottom bracket
- Shimano BB-RS500
BB-RS500
Cassette
- microSHIFT
Chain
- SRAM PC-1130 11 speeds
PC-1130
Crankset
- Rondo 38t
Front derailleur

None
Rear derailleur
- SRAM Apex 1 11 speeds
Shifters
- SRAM Apex

Brakes

2 parts

Brakes

PRO hydro-mechanical Not identified
Disc rotors

160MM/160MM Not identified

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Grips
- San Marco
Handlebar
- Rondo
Headset

UPPER STACK: ZS 44 / 28,6 LOWER STACK: EC 44/ 40 SHIS Not identified
Saddle
- WTB Volt
Seatpost
- Rondo
Stem
- Rondo

Sizes and geometry

8 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD Low

Table

Reach 406mm

Stack 601mm

Wheelbase 1070mm

Head angle 70.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 8 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	409	401	413	406	423	414	432	424
Stackmm	577	582	595	601	611	619	633	638
Top tube lengthmm	573	575	583	585	598	600	618	620
Seat tube lengthmm	470	470	490	490	510	510	530	530
Head tube lengthmm	140	140	160	160	180	180	200	200
Head tube angle	70.8°	70°	70.8°	70°	70.8°	70°	70.8°	70°
Seat tube angle	73.8°	73°	73.8°	73°	73.8°	73°	73.8°	73°
Chainstay lengthmm	435	435	435	435	435	435	435	435
Wheelbasemm	1065	1059	1076	1070	1092	1086	1101	1103
Front centermm	644	636	655	647	671	663	680	680
Bottom bracket dropmm	86	80	86	80	86	80	86	80
Fork rakemm	55	45	55	45	55	45	55	45
Trailmm	63	79	62	80	62	79	70	79
Stack/reach ratio	1.41	1.45	1.44	1.48	1.44	1.50	1.47	1.51
Suspension and parts
Crank lengthmm	170	170	172.5	172.5	172.5	172.5	175	175
Handlebar widthmm	440	440	440	440	460	460	460	460
Stem lengthmm	60	60	60	60	80	80	80	80

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

Specifications

Frame and fork

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

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 38
Largest chainring: 38
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 26.2 in
Highest gear: 100.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire width: 2.1″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

3 measures

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

Lowest gear

26.2 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,455 bicycles with this information
Coverage: 73.2% of the class

Highest gear

100.2 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,455 bicycles with this information
Coverage: 73.2% of the class

Shifting

Mechanical

706 of 1,980 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2026
Sample: 1,980 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.1 km/h
Highest gear: 38.4 km/h

Total gear range 382%

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: 26.2–100.2 gear inches
Class reference (p10–p90): 22.8–127.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2026
Lowest gear: 1455 bicycles with this information, 73.2% of the class
Highest gear: 1455 bicycles with this information, 73.2% 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 2026 builds
Specification	This bicycle Rondo Bogan ST2	Rondo Bogan ST1
Drivetrain
Front chainrings	1	2
Smallest chainring	38	30
Largest chainring	38	46
Rear sprockets	11	10
Largest sprocket	42	36
Lowest gear	26.2 in	24.2 in
Highest gear	100.2 in	121.3 in