Rocky Mountain RC 70

2013 UrbanFitness

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 10 34–50t / 12–25t
Gear range: 306%
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

20 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

Rocky Mountain 6061 Series Custom Hydroformed Alloy Frame Internal Cable Routing ZeroStack 1-1/8\" Headtube Rack and Fender Mounts Not identified

Suspension

1 part

Fork
- Rocky Mountain

Drivetrain

7 parts

Bottom bracket
- FSA
Cassette
- Shimano CS-4600 12–25t
CS-4600
Chain
- Shimano CN-HG53
CN-HG53
Crankset
- FSA Omega 50/34t
Front derailleur
- Shimano Tiagra
Rear derailleur
- Shimano RD-4600
RD-4600
Shifters
- Shimano Tiagra

Brakes

2 parts

Brake levers
- Tektro
FL-320
Brakes
- Tektro

Wheels and tires

5 parts

Front hub
- Shimano HB-RM70
HB-RM70
Rear hub
- Shimano FH-RM70
FH-RM70
Rims

Freedom Racine Elite CNC 700c Not identified
Spokes

Stainless Not identified
Tires
- Continental Ultra Sport

Cockpit and contact points

7 parts

Sizes and geometry

5 sizes Open in the geometry plotter

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

Size LG

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	520	545	555	575	590
Seat tube lengthmm	400	450	500	555	580
Head tube lengthmm	110	120	150	175	195
Head tube angle	70.5°	71°	71.5°	72°	72.5°
Seat tube angle	74°	73.5°	73.5°	73°	73°
Chainstay lengthmm	435	435	435	435	435
Wheelbasemm	999	1004	1020	1036	1051
Front centermm	574	579	595	611	626
Bottom bracket dropmm	70	70	70	70	70
Standover heightmm	721	752	787	828	850

Not published by the manufacturer: Reach, Stack, Bottom bracket height, Fork rake, Trail, Stack/reach ratio, 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
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 10
Smallest sprocket: 12
Largest sprocket: 25
Lowest gear: 39.4 in
Highest gear: 120.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 28c
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

2 measures

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

Lowest gear

39.4 gear inches

This value is above the central range for this class.

Cohort: Urban / Fitness Model year: 2013
Sample: 74 bicycles with this information
Coverage: 96.1% of the class

Highest gear

120.8 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2013
Sample: 74 bicycles with this information
Coverage: 96.1% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 15.1 km/h
Highest gear: 46.3 km/h

Total gear range 306%

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: 39.4–120.8 gear inches
Class reference (p10–p90): 22.2–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2013
Lowest gear: 74 bicycles with this information, 96.1% of the class
Highest gear: 74 bicycles with this information, 96.1% 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 2013 builds

Differences across 2013 builds
Specification	This bicycle Rocky Mountain RC 70	Rocky Mountain RC 10	Rocky Mountain RC 30	Rocky Mountain RC 50
Frame
Fork material	Carbon	Steel	Steel	Carbon
Drivetrain
Front chainrings	2	3	3	3
Smallest chainring	34	28	28	28
Largest chainring	50	48	48	48
Rear sprockets	10	8	9	9
Smallest sprocket	12	11	11	11
Largest sprocket	25	32	32	32
Lowest gear	39.4 in	25.4 in	25.4 in	25.4 in
Highest gear	120.8 in	126.6 in	126.6 in	126.6 in