Trek Roscoe 8

Name: Trek Roscoe 8
Brand: Trek

2021 MountainTrail Manufacturer page

Trek Roscoe 8, color Dark Aquatic / Metallic Gunmetal

Fork travel: 120 mm
Wheels: 27.5″
Drivetrain: 1 × 12 30t / 11–50t
Gear range: 455%
Weight: 14.65 kg 32.3 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 137–155
SM 153–166.5
MD 161–172
MD/LG 165.5–179
LG 177–188
XL 186–197
XXL 194–203

Components

19 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

Alpha Gold Aluminum, tapered head tube, internal derailleur & dropper post routing, rack & kickstand mount, Boost141, 5mm QR Not identified

Suspension

1 part

Fork
- RockShox 35 Gold RL

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Bontrager
Rear hub
- Formula
DCL-141Q
Rims
- Bontrager
Spokes

14g stainless steel Not identified
Tires
- Maxxis Rekon

Cockpit and contact points

7 parts

Grips
- Bontrager
Handlebar
- Bontrager
Headset

Semi-integrated, loose ball bearing, 1-1/8'' top, 1.5'' bottom Not identified
Pedals
- VP
VP-536
Saddle
- Bontrager
Seatpost
- Tranz-X
JD-YSP18
Stem
- Bontrager

Sizes and geometry

7 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD/LG

Table

Reach 410mm

Stack 615mm

Wheelbase 1126mm

Head angle 67.3°

Seat angle 70.8°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	351	364	394	410	428	442	457
Stackmm	605	614	614	615	625	644	644
Top tube lengthmm	558	574	609	625	645	666	680
Seat tube lengthmm	343	368	419	444	470	521	559
Head tube lengthmm	90	90	90	90	100	120	120
Head tube angle	67.1°	67.2°	67.2°	67.3°	67.3°	67.4°	67.4°
Seat tube angle	71.1°	71.2°	70.7°	70.8°	70.8°	70.9°	70.9°
Chainstay lengthmm	438	438	438	438	438	438	438
Wheelbasemm	1059	1081	1110	1126	1146	1168	1182
Front centermm	626	646	675	691	711	733	747
Bottom bracket dropmm	50	40	41	41	41	42	42
Bottom bracket heightmm	310	320	319	319	319	318	318
Standover heightmm	731	754	751	748	763	760	815
Fork rakemm	35	36	36	37	35	36	35
Trailmm	152	152	151	151	151	150	150
Stack/reach ratio	1.72	1.69	1.56	1.50	1.46	1.46	1.41

Not published by the manufacturer: 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
Bicycle weight: 14.65 kg

32.3 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 16.5 in
Highest gear: 75.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire clearance: Maximum tire width: 2.8″
Tire width: 2.8″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

4 measures

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

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,325 bicycles with this information
Coverage: 98.1% of the class

Lowest gear

16.5 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,138 bicycles with this information
Coverage: 84.2% of the class

Highest gear

75.0 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,138 bicycles with this information
Coverage: 84.2% of the class

Shifting

Mechanical

53 of 1,347 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,347 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.3 km/h
Highest gear: 28.7 km/h

Total gear range 455%

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: 16.5–75.0 gear inches
Class reference (p10–p90): 16.9–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2021
Lowest gear: 1138 bicycles with this information, 84.2% of the class
Highest gear: 1138 bicycles with this information, 84.2% 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 2021 builds
Specification	This bicycle Trek Roscoe 8	Trek Roscoe 20	Trek Roscoe 24	Trek Roscoe 6	Trek Roscoe 7
Frame
Bicycle weight	14.65 kg	10.68 kg	11.6 kg	15.81 kg	14.84 kg
Weight limit	136 kg	Not informed	Not informed	136 kg	136 kg
Fork material	Not informed	Aluminum	Aluminum	Not informed	Not informed
Suspension
Suspension configuration	Hardtail	Rigid	Rigid	Hardtail	Hardtail
Front travel	120 mm	Not informed	Not informed	120 mm	100 mm
Drivetrain
Smallest chainring	30	32	28	28	30
Largest chainring	30	32	28	28	30
Rear sprockets	12	8	8	10	12
Largest sprocket	50	34	34	46	50
Lowest gear	16.5 in	18.8 in	19.8 in	16.7 in	16.5 in
Highest gear	75.0 in	58.2 in	61.1 in	70.0 in	75.0 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Mechanical disc	Hydraulic disc	Hydraulic disc
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	BSA	BSA
Fork spring	Air	Not informed	Not informed	Coil	Air
Suspension	Hardtail	Rigid	Rigid	Hardtail	Hardtail
Tire clearance	Maximum tire width: 2.8″	Not informed	Not informed	Not informed	Maximum tire width: 2.8″
Wheel size	27.5″	20″	24″	27.5″	27.5″