Trek Chelsea 8

2015 RoadGeneral road

Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 8 45t / 11–32t
Gear range: 291%
Frame: Steel
Brakes: Mechanical disc

Sizes

Size guide

49cm
53cm
56cm

The manufacturer did not publish rider heights for these sizes.

Components

9 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

Trek Custom Steel Mixtie w/inboard rear disc brake mounts, rack & fender mounts Not identified

Suspension

1 part

Fork

High-tensile steel Not identified

Drivetrain

4 parts

Cassette
- SRAM PG-830 8 speeds
PG-830
Crankset

Forged alloy 3 piece, 45T Not identified
Rear derailleur
- Shimano Acera
Shifters
- Shimano Altus SL-M310
SL-M310

Brakes

1 part

Brakes
- Tektro

Wheels and tires

1 part

Tires
- Bontrager

Cockpit and contact points

6 parts

Handlebar
- Bontrager
Headset

1-1/8" Threadless Not identified
Pedals

Nylon body w/alloy cage Not identified
Saddle
- Bontrager
Seatpost
- Bontrager
Stem
- Bontrager

Sizes and geometry

3 sizes

Rider-height ranges are not published for these sizes.

Size

Geometry not published

The manufacturer lists these sizes without frame measurements, so there is no drawing or geometry table.

Specifications

Frame and fork

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

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 45
Largest chainring: 45
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 40.8 in
Highest gear: 118.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 32c
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

40.8 gear inches

This value is above the central range for this class.

Cohort: Road / General road Model year: 2015
Sample: 42 bicycles with this information
Coverage: 97.6% of the class

Highest gear

118.6 gear inches

This value is below the central range for this class.

Cohort: Road / General road Model year: 2015
Sample: 42 bicycles with this information
Coverage: 97.6% of the class

Shifting

Mechanical

2 of 43 bicycles with this information use electronic shifting.

Cohort: Road / General road Model year: 2015
Sample: 43 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 15.6 km/h
Highest gear: 45.4 km/h

Total gear range 291%

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: 40.8–118.6 gear inches
Class reference (p10–p90): 24.9–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / General road Model year: 2015
Lowest gear: 42 bicycles with this information, 97.6% of the class
Highest gear: 42 bicycles with this information, 97.6% of the class