Marin Bobcat Trail 4

2018 MountainCross-country Manufacturer page

Fork travel: 100 mm
Wheels: 27.5″, 29″
Drivetrain: 2 × 9 22–36t / 11–36t
Gear range: 536%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 158–167
SM 165–173
MD 169–180
LG 177–186
XL 183–191
XXL 186–194

Components

19 of 23 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

Series 2 6061 Aluminum, 27.5" or 29” Wheels, 68mm BB shell, 135mm Forged Dropouts, IS Chainstay Disc Mount Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

7 parts

Bottom bracket

Sealed Cartridge Bearings, Square Taper Not identified
Cassette
- SunRace 11–36t
Chain
- KMC X9 9 speeds
Crankset
- SR Suntour 36/22t
Front derailleur
- microSHIFT Marvo Front Derailleur 2×9 9 speeds
FD-M462B
Rear derailleur
- Shimano Altus
Shifters
- Shimano Altus

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Joytech
Rear hub
- Joytech
Rims
- Marin
Spokes

14g Black Stainless Steel Not identified
Tires
- Schwalbe Tough Tom

Cockpit and contact points

7 parts

Grips
- Marin
Handlebar
- Marin
Headset
- FSA NO.10
Pedals

Nylon Platform Not identified
Saddle
- Marin
Seatpost
- Marin
Stem
- Marin

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 438mm

Stack 588mm

Wheelbase 1131mm

Head angle 68.0°

Seat angle 74.0°

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 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	409.1	422.77	438.44	449.62	465.29	474.96
Stackmm	578.56	583.19	587.83	618.6	623.24	627.88
Top tube lengthmm	575	590	607	627	644	655
Seat tube lengthmm	330	381	431	482	520	559
Head tube lengthmm	100	105	110	115	120	125
Head tube angle	68°	68°	68°	68°	68°	68°
Seat tube angle	74°	74°	74°	74°	74°	74°
Chainstay lengthmm	430	430	430	445	445	445
Wheelbasemm	1098.23	1113.77	1131.32	1170.71	1188.25	1199.8
Front centermm	673	688	706	730	747	759
Bottom bracket dropmm	48	48	48	48	48	48
Bottom bracket heightmm	304.5	304.5	304.5	311	311	311
Standover heightmm	639.7	679.36	723.37	778.55	809.93	838.88
Fork rakemm	44	42	42	51	51	51
Trailmm	96	96	96	103	103	103
Stack/reach ratio	1.41	1.38	1.34	1.38	1.34	1.32
Suspension and parts
Crank lengthmm	170	170	175	175	175	175
Handlebar widthmm	720	720	720	720	720	720
Stem lengthmm	60	60	60	60	60	60

Not published by the manufacturer: Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 22
Largest chainring: 36
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 17.7 in
Highest gear: 94.9 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.25″
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

100 mm

This value is within 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

17.7 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

Highest gear

94.9 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: 6.8 km/h
Highest gear: 36.4 km/h

Total gear range 536%

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: 17.7–94.9 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 Marin Bobcat Trail 4	Marin Bobcat Trail 3	Marin Bobcat Trail 5
Drivetrain
Front chainrings	2	3	1
Smallest chainring	22	22	32
Largest chainring	36	42	32
Rear sprockets	9	8	10
Largest sprocket	36	34	42
Lowest gear	17.7 in	18.8 in	22.1 in
Highest gear	94.9 in	110.7 in	84.4 in