Marin Rocky Ridge 7.4

2015 MountainTrail Manufacturer page

Fork travel: 130 mm
Wheels: 27.5″
Drivetrain: 1 × 10 32t / 11–36t
Gear range: 327%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–170
MD 168–179
LG 176–187

Components

18 of 20 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 Three Alloy with SHOT Tech, 27.5 Not identified

Suspension

1 part

Fork
- RockShox Sektor Silver TK

Drivetrain

6 parts

Brakes

2 parts

Brake levers
- Shimano
Brakes
- Shimano BR-M445
BR-M445

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Grips
- Marin
Handlebar

Double Butted 6061 Alloy, OS-31.8mm, 10mm Rise, 740mm Wide Not identified

OS-31
Headset
- FSA ORBIT IS 138
Saddle
- WTB Volt
Seatpost
- KS
Stem
- Marin

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 399mm

Stack 608mm

Wheelbase 1104mm

Head angle 67.5°

Seat angle 73.0°

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	376.25	399.11	420.6
Stackmm	598.49	608.02	616.97
Top tube lengthmm	560	585	610
Seat tube lengthmm	380	445	480
Head tube lengthmm	110	120	130
Head tube angle	67.5°	67.5°	67.5°
Seat tube angle	73°	73°	73°
Chainstay lengthmm	420	420	420
Wheelbasemm	1078.11	1104.11	1130.11
Front centermm	660	686	712
Bottom bracket dropmm	32	32	32
Bottom bracket heightmm	318	318	318
Standover heightmm	701.48	699.27	734.81
Fork rakemm	44	44	44
Trailmm	99	100	99
Stack/reach ratio	1.59	1.52	1.47

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

Suspension

Suspension configuration: Hardtail
Front travel: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 24.4 in
Highest gear: 80.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

3 measures

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

Front travel

130 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2015
Sample: 155 bicycles with this information
Coverage: 93.3% of the class

Lowest gear

24.4 gear inches

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2015
Sample: 163 bicycles with this information
Coverage: 98.1% of the class

Highest gear

80.0 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2015
Sample: 163 bicycles with this information
Coverage: 98.1% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.4 km/h
Highest gear: 30.6 km/h

Total gear range 327%

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: 24.4–80.0 gear inches
Class reference (p10–p90): 16.8–104.4 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2015
Lowest gear: 163 bicycles with this information, 98.1% of the class
Highest gear: 163 bicycles with this information, 98.1% 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 2015 builds

Differences across 2015 builds
Specification	This bicycle Marin Rocky Ridge 7.4	Marin Rocky Ridge 7.2	Marin Rocky Ridge 7.6
Drivetrain
Rear sprockets	10	9	11
Smallest sprocket	11	12	10
Largest sprocket	36	36	42
Lowest gear	24.4 in	24.4 in	21.0 in
Highest gear	80.0 in	73.3 in	88.0 in
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost
Other specifications
Tire width	2.25″	2.25″	2.35″
Travel	Configuration: HardtailFront: Travel: 130 mm	Configuration: HardtailFront: Travel: 130 mmRear: Additional specification: Not available: Yes	Configuration: HardtailFront: Travel: 130 mm
Bottom bracket standard	Not informed	Not informed	386 EVO