VelopediaBicycle Archive · Specification report

2003 Rocky Mountain Fusion

Velopedia Archive ID 39374

Overview

Model year2003
BrandRocky Mountain
ModelFusion
Bicycle typeMountain bike, front suspension
Archive ID39374
Original MSRP$685.00
ColorsDX Red/Flat Anthracite
Sizes14.5", 16", 17.5", 18.5", 19.5", 21", 22.5"

Frameset

Frame constructionTIG-welded
Frame material7005 aluminum
ForkRock Shox Judy TT, 80mm travel
Fork materialAluminum/magnesium, single crown
Rear shockN/A

Drivetrain

Component groupMountain Mix
ShiftersShimano Acera EZ Fire Plus
Front derailleurShimano Acera, top-pull/clamp-on 31.8mm
Rear derailleurShimano Deore SGS
CranksetShimano Alivio FC-MC20, 22/32/42 teeth
Bottom bracketShimano BB-UN25, 110mm spindle
BB shell width73mm English
Rear cogs8-speed, 11 - 32 teeth
ChainShimano CN-HG50, 1/2 x 3/32"
PedalsBig Flats

Brakes

BrakesShimano BR-420 brakes, Shimano Acera levers

Cockpit & contact points

Headset1 1/8" threadless Ritchey
HandlebarRMB Rise
Handlebar extensionsN/A
StemRmb
SaddleRMB Custom
SeatpostRMB, 26.8mm diameter

Wheels & tires

HubsShimano Alivio
RimsAlex Ace 19, 32-hole
SpokesDT stainless steel, 15ga. (1.8mm) straight gauge
Spoke nipplesBrass nipples
Front tire26 x 1.95" Maxxis MOFO XC
Wheel size26" wheels

Geometry · Legacy reference

Top tube575 mm
Head-tube angle70.5°
Seat-tube angle73°
Chainstay / rear center425 mm
Wheelbase1055 mm
Fork offset / rake38.1 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 22, 2026.