Velopedia Bicycle Archive

2001 Rocky Mountain Fusion

Original manufacturer specifications including Shimano Acera drivetrain, 26" wheels, geometry for 1 published size.

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What Velopedia knows

Model year
2001
Category
Mountain
Original MSRP
$600.00
Sizes
14.5", 16", 17.5", 18.5", 19.5", 21"
Colors
Grey
Geometry
Legacy reference · Geometry context
Record coverage
31 preserved details · archived image · original MSRP · preserved geometry
Archive ID
35091
Model history 14 other years

Manufacturer catalog

Published sizes and colors

6 sizes · 1 color

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

Published sizes

14.5"16"17.5"18.5"19.5"21"

Published colors

Grey

Frameset

Frame ConstructionTIG-welded
Frame MaterialReynolds 7005 aluminum
ForkRock Shox Jett, 2.5" travel
Fork MaterialAluminum/magnesium, triple-clamp crown
Rear ShockN/A

Drivetrain

Component GroupShimano Acera
ShiftersShimano Acera EZ Fire Plus
Front DerailleurShimano Acera, top-pull/clamp-on 31.8mm
Rear DerailleurShimano Alivio
CranksetShimano FC-MC 20, 22/32/44 teeth
Bottom BracketSealed cartridge
Rear Cogs8-speed
ChainSRAM, 1/2 x 1/8"
PedalsRocky Mountain X-Sport

Brakes

BrakesShimano V-brake brakes, Shimano Acera levers

Cockpit & Contact Points

Headset1 1/8" threadless Ritchey Logic
HandlebarRocky Mountain Riser
Handlebar ExtensionsNot included
StemRocky Mountain
SaddleRocky Mountain custom
SeatpostRocky Mountain, 26.8mm diameter

Wheels & Tires

HubsShimano Acera
RimsSun Rims CR18, 32-hole
SpokesDT stainless steel, 1.8mm straight gauge
Spoke NipplesBrass nipples
Front Tire26 x 2.10" Maxxis MOFO XC
Wheel Size26" wheels

Historical reference geometry

Geometry

Legacy reference · 5 measurements

Historical model-level geometry recovered from Velopedia’s original archive database. The source does not identify which listed frame size this reference describes, so fit interpretation is intentionally limited and no size-normalized Archive Context is generated.

MeasurementLegacy reference
Top tube575 mm
Head-tube angle70.5°
Seat-tube angle73°
Chainstay / rear center425 mm
Wheelbase1055 mm

Geometry source: Historical archive database — model-level reference geometry. The historical source provides one model-level geometry set and does not identify the corresponding frame size.

Geometry tools

Explore this historical geometry

Model-level historical reference

Period context: At 70.5°, the head angle sits somewhat slacker than typical among mountain geometries represented in Velopedia for this period. Its 73° seat angle is close to the middle of the group among the same-period mountain references.

Compared with 786 distinct legacy mountain geometries from model years 1999–2003. Only angular measurements are used because the historical reference frame size is unidentified.
See it in periodOpen an immediate comparison with preserved 2001 mountain geometries. The source frame size remains unidentified.
See its 2001 geometry context

Parts & serviceability

Find replacement parts

3 top part searches
Front tireMatching fit standard
26x2.10" Maxxis MOFO XC Named tire and published size
Brake padsMatching fit standard
Linear-pull brake pads Published brake type — verify pad mounting style
CranksetExact archived part
Shimano FC-MC 20, 22/32/44 teeth Exact archived model
More qualified parts (5)
Rear derailleurMatching configuration
Shimano Alivio Interpreted as Shimano Alivio · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
ShiftersQualified part search
Shimano Acera EZ Fire Plus Interpreted as Shimano Acera · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
SeatpostMatching fit standard
26.8 mm seatpost Published diameter — verify length and setback
HeadsetQualified part search
1 1/8" threadless Ritchey Logic Named archived component — verify dimensions
HubsQualified part search
Shimano Acera Named archived component — verify dimensions

Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Commercial relationships do not influence Archive specifications or analysis.

Used-bike inspection

If you’re buying this bike used

Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.

Follow the full used-bike inspection order →
  • FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
  • BrakesInspect pad condition, cable movement and the rim sidewalls or brake tracks for wear. A concave or heavily worn braking surface can mean the wheel also needs replacement.Inspect the brakes →
  • SuspensionAsk when the fork was last serviced. Check the stanchions for damage, look for oil at the seals and make sure the fork moves smoothly without bushing play.Evaluate the suspension →
  • DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 8-speed system.Check drivetrain wear →
  • Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
0 of 20 checked Progress stays in this browser for this bike.

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: 2001 Rocky Mountain Fusion · Mountain bike, front suspension · Published sizes: 14.5", 16", 17.5", 18.5", 19.5", 21"

Archived: Frame: TIG-welded · Fork: Rock Shox Jett, 2.5" travel · Aluminum/magnesium, triple-clamp crown

Archived: Fork: Rock Shox Jett, 2.5" travel

Archived: Group: Shimano Acera · Shifters: Shimano Acera EZ Fire Plus · Front derailleur: Shimano Acera, top-pull/clamp-on 31.8mm · Rear derailleur: Shimano Alivio · Crankset: Shimano FC-MC 20, 22/32/44 teeth · Bottom bracket: Sealed cartridge · Rear cogs: 8-speed · Chain: SRAM, 1/2 x 1/8"

Archived: Brakes: Shimano V-brake brakes, Shimano Acera levers

Archived: Wheel size: 26" wheels · Rims: Sun Rims CR18, 32-hole · Hubs: Shimano Acera · Front tire: 26 x 2.10" Maxxis MOFO XC

Controls and contact points

Archived: Headset: 1 1/8" threadless Ritchey Logic · Handlebar: Rocky Mountain Riser · Stem: Rocky Mountain · Seatpost: Rocky Mountain, 26.8mm diameter · Saddle: Rocky Mountain custom · Pedals: Rocky Mountain X-Sport

Before and during the test ride

Follow the full used-bike inspection order →

Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.

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

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