Velopedia Bicycle Archive

2023 Rocky Mountain Fusion 40

Original specifications: 29" wheels · 29.4 LBS|13.3 KGS published weight · geometry for 4 published sizes.

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At a glance

Archive #900004846
Model year
2023
Category
Mountain
Original MSRP
$1,439.00
Sizes
S, M, L, XL
Colors
Black/Brown
Weight
29.4 LBS|13.3 KGS
Geometry
4 manufacturer sizes
In this record
21 specifications · 3 archived images · original MSRP · geometry
Model history 1 other year

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Identification clues

2023 archived details

Published colors
Black/Brown
Frame
Aluminum

Clues, not proof of model year. Colors vary and components may have been replaced.

Campaign
Original buildAluminum · 29"

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Black/Brown

Frameset

Frame ConstructionRocky Mountain 6061 Alloy | Threaded BB | Zero Stack Tapered Headtube Rear Triangle
Frame MaterialAluminum
ForkRockShox Judy Silver Fast Black TK Air 100mm

Drivetrain

ShiftersSram SX Eagle
Rear DerailleurSram SX Eagle
CranksetSram SX Eagle Powerspline | 30T |SM-MD 170mm Crank Length | LG-XL 175mm Crank Length
Bottom BracketSram Powerspline
CassetteSram PG-1210 11-50T
ChainSram SX Eagle

Brakes

BrakesShimano MT4100 2 Piston | Resin Pads | F:Shimano RT10 160mm | R:Shimano RT10 160mm

Cockpit & Contact Points

HeadsetRocky Mountain | Loose Ball Bearings | 1.5" Crown Race
HandlebarRocky Mountain XC | 760mm Width | 25mm Rise | 9° Backsweep | 5° Upsweep | 31.8 Clamp
StemRocky Mountain 31.8 XC | 7° Rise | All Sizes = 50mm
SaddleRocky Mountain 148 Steel
SeatpostRocky Mountain 30.9mm

Wheels & Tires

HubsFront: Shimano TX505; Rear: Shimano TX505
RimsWTB ST i30 TCS 2.0 Tubeless | 32H | Tubeless Compatible - Tape / Valves / Sealant Not Incl
Spokes2.0 Stainless
Front TireWTB Ranger Comp 29 x 2.4
Rear TireWTB Ranger Comp 29 x 2.4
Wheel Size29"

Geometry

4 sizes · 12 measurements

Frame measurements by size.

All geometry measurements4 sizes · 12 measurements
MeasurementSM · 29″MD · 29″LG · 29″XL · 29″
Seat tube380 mm420 mm445 mm480 mm
Effective top tube589 mm616 mm643 mm671 mm
Head tube95 mm100 mm110 mm120 mm
Head-tube angle66.5°66.5°66.5°66.5°
Seat-tube angle74.5°74.5°74.5°74.5°
Chainstay / rear center445 mm445 mm445 mm445 mm
Wheelbase1153 mm1180 mm1209 mm1238 mm
Bottom-bracket drop60 mm60 mm60 mm60 mm
Reach425 mm450 mm475 mm500 mm
Stack593 mm598 mm607 mm616 mm
Standover height763 mm776 mm786 mm801 mm
Wheel size29292929

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes30T · 11–50T
Lowest0.60:1 Highest2.73:1 Total range455%
Estimated speed At 90 RPM Lowest gear4.7 mph Highest gear21.4 mph

Rear tire: 29×2.4.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Your gearing setup
Gears

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Gear, dimension and cadence changes update results automatically.

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Sram SX Eagle
Retailer offers
Rear derailleur · Original
Sram SX Eagle
Retailer offers
Cassette · Original
Sram PG-1210 11-50T
More parts (5)Fewer parts
Seatpost · Original
Rocky Mountain 30.9mm
Retailer offers
Front tire · Original
WTB Ranger Comp 29 x 2.4
Bottom bracket · Original
Sram Powerspline
Crankset · Original
Sram SX Eagle Powerspline | 30T |SM-MD 170mm Crank Length | LG-XL 175mm Crank Length
Shifters · Original
Sram SX Eagle

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Service essentialsQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Seatpost diameter
30.9 mmCheck: Read the post’s diameter marking; seat-clamp size differs.
Bottom bracket / shell
Sram PowersplineCheck: Verify shell type and width, crank interface, and spindle length or spacers.

Not confirmed in this record: Front tire · Rear tire · Drivetrain. Check the fitted parts for these details.

Bike-specific inspection checklist 21 checks based on 6 archived component groups Open checklistClose checklist
0 of 21 checked Progress stays in this browser for this record.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2023 Rocky Mountain Fusion 40 · Mountain · Published sizes: S, M, L, XL

Archived: Frame: Rocky Mountain 6061 Alloy | Threaded BB | Zero Stack Tapered Headtube Rear Triangle · Fork: RockShox Judy Silver Fast Black TK Air 100mm

Archived: Fork: RockShox Judy Silver Fast Black TK Air 100mm

Archived: Shifters: Sram SX Eagle · Rear derailleur: Sram SX Eagle · Crankset: Sram SX Eagle Powerspline | 30T |SM-MD 170mm Crank Length | LG-XL 175mm Crank Length · Bottom bracket: Sram Powerspline · Cassette: Sram PG-1210 11-50T · Chain: Sram SX Eagle

Archived: Brakes: Shimano MT4100 2 Piston | Resin Pads | F:Shimano RT10 160mm | R:Shimano RT10 160mm

Archived: Wheel size: 29" · Rims: WTB ST i30 TCS 2.0 Tubeless | 32H | Tubeless Compatible - Tape / Valves / Sealant Not Incl · Hubs: Front: Shimano TX505; Rear: Shimano TX505

Controls and contact points

Archived: Headset: Rocky Mountain | Loose Ball Bearings | 1.5" Crown Race · Handlebar: Rocky Mountain XC | 760mm Width | 25mm Rise | 9° Backsweep | 5° Upsweep | 31.8 Clamp · Stem: Rocky Mountain 31.8 XC | 7° Rise | All Sizes = 50mm · Seatpost: Rocky Mountain 30.9mm · Saddle: Rocky Mountain 148 Steel

Before and during the test ride

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Gallery3 images

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Campaign

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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