Trek Marlin 8 Gen 3

Name: Trek Marlin 8 Gen 3
Brand: Trek

2023 MountainCross-country Manufacturer page

Last known price: $1,299

Prices shown first for United States
Fork travel: 80 mm
Wheels: 26″, 27.5″, 29″
Drivetrain: 1 × 12 30t / 11–50t
Gear range: 455%
Weight: 14.29 kg 31.5 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

13.5" Not informed
14.5" 154–166
15.5" Not informed
17.5" Not informed
18.5" Not informed
19.5" Not informed
21.5" Not informed

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

Size: XXS, XS, Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew; Size: S, M, ML, L, XL, Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew Not identified

Suspension

1 part

Fork
- RockShox Judy

Drivetrain

6 parts

Brakes

2 parts

Brakes
- Shimano BR-MT200
BR-MT200
Disc rotors
- Shimano SM-RT26
SM-RT26

Wheels and tires

5 parts

Front hub
- Formula DC-20
DC-20
Rear hub
- Formula
DC-22LW
Rims
- Bontrager
Spokes

14g stainless steel, black Not identified
Tires
- Maxxis Ardent

Cockpit and contact points

7 parts

Grips
- Bontrager
Handlebar
- Bontrager
Headset

Semi-integrated, 1-1/8'' 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 17.5"

Table

Reach 440mm

Stack 609mm

Wheelbase 1163mm

Head angle 66.5°

Seat angle 74.0°

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 7 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	365	390	415	440	455	470	495
Stackmm	544	563	572	609	614	618	637
Top tube lengthmm	521	551	579	615	631	647	678
Seat tube lengthmm	320	340	370	420	435	450	500
Head tube lengthmm	90	90	100	105	110	115	135
Head tube angle	66.5°	66.5°	66.5°	66.5°	66.5°	66.5°	66.5°
Seat tube angle	74°	74°	74°	74°	74°	74°	74°
Chainstay lengthmm	433	433	433	438	438	438	438
Wheelbasemm	1060	1092	1121	1163	1180	1197	1230
Front centermm	630	663	692	732	749	765	798
Bottom bracket dropmm	38	45	45	60	60	60	60
Bottom bracket heightmm	302	313	313	308	308	308	308
Standover heightmm	650	658	692	747	759	771	791
Fork rakemm	40	42	42	46	46	46	46
Trailmm	104	110	110	110	110	110	110
Stack/reach ratio	1.49	1.44	1.38	1.38	1.35	1.32	1.29

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: 14.29 kg

31.5 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Hardtail
Front travel: 80 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: 17.4 in
Highest gear: 79.1 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: 2.4″
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 26″, 27.5″, 29″

Technical analysis

4 measures

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

Front travel

80 mm

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2023
Sample: 1,907 bicycles with this information
Coverage: 95.2% of the class

Lowest gear

17.4 gear inches

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2023
Sample: 1,578 bicycles with this information
Coverage: 78.8% of the class

Highest gear

79.1 gear inches

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2023
Sample: 1,578 bicycles with this information
Coverage: 78.8% of the class

Shifting

Mechanical

223 of 2,002 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2023
Sample: 2,002 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.7 km/h
Highest gear: 30.3 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: 17.4–79.1 gear inches
Class reference (p10–p90): 17.7–101.5 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2023
Lowest gear: 1578 bicycles with this information, 78.8% of the class
Highest gear: 1578 bicycles with this information, 78.8% 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 2023 builds

Differences across 2023 builds
Specification	This bicycle Trek Marlin 8 Gen 3	Trek Marlin 4	Trek Marlin 4 Gen 2	Trek Marlin 5 Gen 2	Trek Marlin 6 Gen 2	Trek Marlin 6 Gen 3
Frame
Bicycle weight	14.29 kg	14.4 kg	14.4 kg	13.97 kg	14.11 kg	14.8 kg
Suspension
Front travel	80 mm	80 mm	100 mm	100 mm	100 mm	100 mm
Drivetrain
Front chainrings	1	3	3	2	1	1
Smallest chainring	30	24	24	22	30	30
Largest chainring	30	42	42	36	30	30
Rear sprockets	12	7	7	8	10	10
Smallest sprocket	11	14	14	12	11	11
Largest sprocket	50	28	28	32	46	46
Lowest gear	17.4 in	24.9 in	24.9 in	18.9 in	18.9 in	18.9 in
Highest gear	79.1 in	87.0 in	87.0 in	82.5 in	79.1 in	79.1 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost
Other specifications
Bottom bracket standard	BSA	BSA	BSA	Not informed	Not informed	BSA
Fork spring	Air	Coil	Coil	Coil	Coil	Coil
Tire clearance	Maximum tire width: 2.4″	Maximum tire width: 2.2″	Maximum tire width: 2.2″	Maximum tire width: 2.2″	Maximum tire width: 2.2″	Maximum tire width: 2.4″
Tire width	2.4″	2″	2″	2.2″	2.2″	2.4″
Wheel size	26″ / 27.5″ / 29″	27.5″ / 29″	27.5″ / 29″	27.5″	27.5″ / 29″	29″