Trek Marlin 4

Name: Trek Marlin 4
Brand: Trek

2018 MountainCross-country

Last known price: $439

Prices shown first for United States
Fork travel: 75 mm
Wheels: 27.5″, 29″
Drivetrain: 3 × 7 24–42t / 14–28t
Gear range: 350%
Weight: 14.15 kg 31.2 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Sizes

Size guide

13.5"
15.5"
17.5"
18.5"
19.5"
21.5"
23"

The manufacturer did not publish rider heights for these sizes.

Components

18 of 21 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 Silver Aluminum w/semi-integrated head tube, rack & fender mounts, G2 Geometry on 29ers Not identified

Suspension

1 part

Fork
- SR Suntour
M-3030

Drivetrain

7 parts

Bottom bracket

Sealed cartridge Not identified
Cassette
- Shimano MF-TZ21
MF-TZ21
Chain
- KMC
Crankset
- Shimano FC-TY301 8 speeds 42/34/24t
FC-TY301
Front derailleur
- Shimano Tourney FD-TY500
FD-TY500
Rear derailleur
- Shimano Tourney RD-TY300 7 speeds
RD-TY300
Shifters
- Shimano ST-EF500
ST-EF500

Brakes

1 part

Brakes
- Tektro MD-M280
MD-M280

Wheels and tires

4 parts

Cockpit and contact points

7 parts

Grips
- Bontrager
Handlebar
- Bontrager
Headset

Semi-integrated, 1-1/8˝ Not identified
Pedals
- Wellgo
Saddle
- Bontrager
Seatpost
- Bontrager
Stem
- Bontrager

Sizes and geometry

7 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 18.5"

Table

Reach 428mm

Stack 601mm

Wheelbase 1128mm

Head angle 69.6°

Seat angle 72.3°

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 Reach Stack

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	352	381	413	428	444	458	472
Stackmm	565	585	600	601	601	620	620
Top tube lengthmm	525	560	602	620	639	659	673
Seat tube lengthmm	343	394	419	444	470	521	559
Head tube lengthmm	100	100	100	100	100	120	120
Head tube angle	69°	69.3°	69.3°	69.6°	69.6°	69.6°	69.6°
Seat tube angle	73°	73°	72.5°	72.3°	72°	72°	72°
Chainstay lengthmm	438	438	445	445	445	445	445
Wheelbasemm	1033	1066	1116	1128	1144	1165	1179
Front centermm	600	632	676	688	704	725	739
Bottom bracket dropmm	48	48	53	53	53	53	53
Bottom bracket heightmm	306	306	316	316	316	316	316
Standover heightmm	660	745	765	777	789	825	848
Fork rakemm	44	44	51	51	51	51	51
Trailmm	89	87	85	83	83	83	83
Stack/reach ratio	1.61	1.54	1.45	1.40	1.35	1.35	1.31

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: 14.15 kg

31.2 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Hardtail
Front travel: 75 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 24
Largest chainring: 42
Rear sprockets: 7
Smallest sprocket: 14
Largest sprocket: 28
Lowest gear: 24.9 in
Highest gear: 87.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.2″
Wheel material: Aluminum
Wheel size: 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

75 mm

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2018
Sample: 771 bicycles with this information
Coverage: 97.9% of the class

Lowest gear

24.9 gear inches

This value is above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2018
Sample: 724 bicycles with this information
Coverage: 91.9% of the class

Highest gear

87.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2018
Sample: 724 bicycles with this information
Coverage: 91.9% of the class

Shifting

Mechanical

18 of 787 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2018
Sample: 787 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.5 km/h
Highest gear: 33.3 km/h

Total gear range 350%

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: 24.9–87.0 gear inches
Class reference (p10–p90): 16.5–105.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2018
Lowest gear: 724 bicycles with this information, 91.9% of the class
Highest gear: 724 bicycles with this information, 91.9% 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 2018 builds
Specification	This bicycle Trek Marlin 4	Trek Marlin 5	Trek Marlin 6	Trek Marlin 7
Frame
Bicycle weight	14.15 kg	14.51 kg	14.7 kg	14.29 kg
Suspension
Front travel	75 mm	100 mm	100 mm	100 mm
Drivetrain
Smallest chainring	24	24	24	22
Largest chainring	42	42	42	40
Rear sprockets	7	7	8	9
Smallest sprocket	14	12	12	11
Largest sprocket	28	32	32	34
Lowest gear	24.9 in	21.8 in	20.6 in	17.8 in
Highest gear	87.0 in	101.5 in	96.3 in	100.0 in
Brakes
Brake type	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Other specifications
Wheel size	27.5″ / 29″	27.5″ / 29″	27.5″	27.5″