Marin Stinson Step-Thru

2015 UrbanComfort Manufacturer page

Fork travel: 63 mm
Wheels: 650b
Drivetrain: 3 × 8 24–42t / 11–32t
Gear range: 509%
Frame: Aluminum
Brakes: Rim brake

Rider height by size (cm)

Size guide

XS 151–164
SM 159–170
MD 165–177
LG 171–184

Components

15 of 22 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

Series One 6061 Aluminum, 26” Wheels, Step Through Top Tube Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

7 parts

Bottom bracket

Sealed Cartridge Not identified
Cassette
- Shimano CS-HG31 8 speeds
CS-HG31
Chain
- KMC
Crankset
- SR Suntour 42/34/24t
Front derailleur
- Shimano FD-M190
FD-M190
Rear derailleur
- Shimano Acera
Shifters
- Shimano ST-EF51
ST-EF51

Brakes

2 parts

Brake levers
- Shimano
Brakes

Forged Alloy Linear Pull with Power Modulator Not identified

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Grips
- Marin
Handlebar

Double Butted 6061 Alloy, 25.4, 50mm Rise, Comfort Bend Not identified
Headset

Threaded Headset Not identified
Pedals

Ergonomic Composite With Kraton Grip Section Not identified
Saddle
- Marin
Seatpost
- Marin
Stem

Forged Alloy, Adjustable with 0° to 60° Rise Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	590	605	620	635
Seat tube lengthmm	381	431.8	482.6	520.7
Head tube lengthmm	160	170	185	200
Head tube angle	68.5°	68.5°	68.5°	68.5°
Seat tube angle	66°	66°	66°	66°
Chainstay lengthmm	485	485	485	485
Wheelbasemm	1066.3	1080.9	1095.1	1109.4
Front centermm	588	603	617	631
Bottom bracket dropmm	60	60	60	60
Fork rakemm	40	40	40	40

Not published by the manufacturer: Reach, Stack, Bottom bracket height, Standover height, Trail, Stack/reach ratio, 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

Suspension

Suspension configuration: Hardtail
Front travel: 63 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 24
Largest chainring: 42
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 20.6 in
Highest gear: 105.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2″
Wheel material: Aluminum
Wheel size: 650b

Technical analysis

2 measures

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

Lowest gear

20.6 gear inches

This value is below the central range for this class.

Cohort: Urban / Comfort Model year: 2015
Sample: 57 bicycles with this information
Coverage: 93.4% of the class

Highest gear

105.0 gear inches

This value is within the central range for this class.

Cohort: Urban / Comfort Model year: 2015
Sample: 57 bicycles with this information
Coverage: 93.4% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.9 km/h
Highest gear: 40.2 km/h

Total gear range 509%

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: 20.6–105.0 gear inches
Class reference (p10–p90): 21.4–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Comfort Model year: 2015
Lowest gear: 57 bicycles with this information, 93.4% of the class
Highest gear: 57 bicycles with this information, 93.4% of the class