Rocky Mountain Fusion 40

Name: Rocky Mountain Fusion 40
Brand: Rocky Mountain

2023 MountainCross-country Manufacturer page

Rocky Mountain Fusion 40, color Black / Brown

Last known price: $1,439

Prices shown first for United States
Fork travel: 100 mm
Wheels: 29″
Drivetrain: 1 × 12 30t / 11–50t
Gear range: 455%
Weight: 13.3 kg 29.3 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 165–170
MD 167.5–180
LG 177.5–188
XL 185.5–198

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

Rocky Mountain 6061 Alloy | Threaded BB | Zero Stack Tapered Headtube Rear Triangle Not identified

Suspension

1 part

Fork
- RockShox Judy Silver TK

Drivetrain

6 parts

Brakes

1 part

Brakes
- Shimano

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

6 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 450mm

Stack 598mm

Wheelbase 1180mm

Head angle 66.5°

Seat angle 74.5°

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	425	450	475	500
Stackmm	593	598	607	616
Top tube lengthmm	589	616	643	671
Seat tube lengthmm	380	420	445	480
Head tube lengthmm	95	100	110	120
Head tube angle	66.5°	66.5°	66.5°	66.5°
Seat tube angle	74.5°	74.5°	74.5°	74.5°
Chainstay lengthmm	445	445	445	445
Wheelbasemm	1153	1180	1209	1238
Front centermm	715	741	770	799
Bottom bracket dropmm	60	60	60	60
Bottom bracket heightmm	314	314	314	314
Standover heightmm	763	776	786	801
Fork rakemm	51	51	51	51
Trailmm	107	107	107	107
Stack/reach ratio	1.40	1.33	1.28	1.23

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: 13.3 kg

29.3 lb

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: 2023
Sample: 1,907 bicycles with this information
Coverage: 95.2% 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: 2023
Sample: 1,578 bicycles with this information
Coverage: 78.8% 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: 2023
Sample: 1,578 bicycles with this information
Coverage: 78.8% of the class

Shifting

Mechanical

223 of 2,002 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2023
Sample: 2,002 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): 17.7–101.5 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2023
Lowest gear: 1578 bicycles with this information, 78.8% of the class
Highest gear: 1578 bicycles with this information, 78.8% 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 2023 builds
Specification	This bicycle Rocky Mountain Fusion 40	Rocky Mountain Fusion 10	Rocky Mountain Fusion 10 microSHIFT	Rocky Mountain Fusion 30	Rocky Mountain Fusion 30 microSHIFT	Rocky Mountain Fusion 40 SRAM
Frame
Bicycle weight	13.3 kg	13.8 kg	13.9 kg	Not informed	13.5 kg	13.4 kg
Suspension
Front travel	100 mm	100 mm	100 mm	120 mm	100 mm	100 mm
Drivetrain
Smallest chainring	30	30	30	32	30	30
Largest chainring	30	30	30	32	30	30
Rear sprockets	12	9	9	10	10	12
Largest sprocket	50	42	42	48	46	50
Lowest gear	17.4 in	20.7 in	20.7 in	19.3 in	18.9 in	17.4 in
Highest gear	79.1 in	79.1 in	79.1 in	84.4 in	79.1 in	79.1 in
Other specifications
Fork spring	Air	Coil	Coil	Air	Air	Air
Tire width	2.4″	2.25″	2.25″	2.4″	2.4″	2.4″