Rocky Mountain Fusion 40

2020 MountainCross-country

Last known price: $1,099

Prices shown first for United States
Fork travel: 100 mm
Wheels: 29″
Drivetrain: 1 × 12 30t / 11–50t
Gear range: 455%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

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

Rocky Mountain 6061 Alloy. Threaded BB. Zero Stack Tapered Headtube Not identified

Suspension

1 part

Fork
- RockShox 30

Drivetrain

6 parts

Brakes

2 parts

Brake levers
- Shimano BL-MT201
BL-MT201
Brakes
- Shimano BL-MT201
BL-MT201

Wheels and tires

5 parts

Front hub
- Shimano HB-TX505
HB-TX505
Rear hub
- Shimano FH-TX505 11 speeds
FH-TX505
Rims
- WTB
Spokes

2.0 Stainless Not identified
Tires
- WTB

Cockpit and contact points

7 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 418mm

Stack 617mm

Wheelbase 1119mm

Head angle 69.5°

Seat angle 73.5°

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 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	393	418	434	461
Stackmm	611	617	623	633
Top tube lengthmm	575	600	625	655
Seat tube lengthmm	394	432	470	508
Head tube lengthmm	100	100	110	120
Head tube angle	69°	69.5°	69.5°	69.5°
Seat tube angle	73.5°	73.5°	73°	73°
Chainstay lengthmm	447	447	447	447
Wheelbasemm	1100	1119	1139	1170
Front centermm	659	678	698	729
Bottom bracket dropmm	56	56	56	56
Bottom bracket heightmm	318	318	318	318
Standover heightmm	809	820	843	860
Fork rakemm	47	45	46	47
Trailmm	93	92	91	90
Stack/reach ratio	1.56	1.48	1.44	1.37

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: 100 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: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 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: 2020
Sample: 1,085 bicycles with this information
Coverage: 86.0% 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: 2020
Sample: 1,057 bicycles with this information
Coverage: 83.8% 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: 2020
Sample: 1,057 bicycles with this information
Coverage: 83.8% of the class

Shifting

Mechanical

57 of 1,261 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2020
Sample: 1,261 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): 17.4–105.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2020
Lowest gear: 1057 bicycles with this information, 83.8% of the class
Highest gear: 1057 bicycles with this information, 83.8% 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 2020 builds
Specification	This bicycle Rocky Mountain Fusion 40	Rocky Mountain Fusion 10	Rocky Mountain Fusion 30
Drivetrain
Smallest chainring	30	28	28
Largest chainring	30	28	28
Rear sprockets	12	8	9
Largest sprocket	50	40	40
Lowest gear	17.4 in	20.3 in	20.3 in
Highest gear	79.1 in	73.8 in	73.8 in
Other specifications
Fork spring	Air	Coil	Air
Tire width	2.4″	2.25″	2.4″