MEC Chinook StepThrough

Name: MEC Chinook StepThrough
Brand: MEC

2024 UrbanCommuter Manufacturer page

MEC Chinook StepThrough, color Silver / River Rock

Suspension: Rigid
Wheels: 700c
Drivetrain: 3 × 8 26–48t / 12–32t
Gear range: 492%
Weight: 12.35 kg 27.2 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

SM 158–170
MD 168–179
LG 176–187

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

Aluminum Not identified

Suspension

1 part

Fork

Chromoly steel Not identified

Drivetrain

7 parts

Bottom bracket
- FSA
BB-7420ST
Cassette
- Shimano CS-HG200 12–32t
CS-HG200
Chain
- Shimano
Crankset
- Shimano Tourney
Front derailleur
- Shimano Tourney
Rear derailleur
- Shimano Acera
Shifters
- microSHIFT

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Formula
Rear hub
- Formula
Rims
- Alex Rims
Spokes

Stainless Not identified
Tires
- Kenda

Cockpit and contact points

6 parts

Handlebar

MEC City Riser 31.8mm Not identified
Headset
- Neco
Pedals

MEC Moss Not identified
Saddle
- Selle Royal
Seatpost

MEC aluminum Not identified
Stem

MEC AS-021 31.8mm Not identified

AS-021

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 392mm

Stack 567mm

Wheelbase 1063mm

Head angle 69.0°

Seat angle 73.0°

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	391	392	392
Stackmm	553	567	581
Top tube lengthmm	550	560	570
Seat tube lengthmm	225	225	225
Head tube lengthmm	140	155	170
Head tube angle	69°	69°	69°
Seat tube angle	74°	73°	73°
Chainstay lengthmm	440	440	440
Wheelbasemm	1062	1063	1073
Front centermm	630	631	641
Bottom bracket dropmm	65	65	65
Fork rakemm	45	45	45
Trailmm	86	91	86
Stack/reach ratio	1.41	1.45	1.48

Not published by the manufacturer: Bottom bracket height, 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: Steel
Bicycle weight: 12.35 kg

27.2 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 26
Largest chainring: 48
Rear sprockets: 8
Smallest sprocket: 12
Largest sprocket: 32
Lowest gear: 23.6 in
Highest gear: 116.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 35c
Wheel material: Aluminum
Wheel size: 700c

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.0 km/h
Highest gear: 44.4 km/h

Total gear range 492%

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.