Velopedia Bicycle Archive

1998 Giant MCM 980

Original manufacturer specifications including Grip Shift ESP 9.0/Shimano Deore XT drivetrain, 26" wheels, 28.25 lb published weight.

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What Velopedia knows

Model year
1998
Category
Mountain
Original MSRP
$2,999.99
Sizes
M
Colors
Natural carbon/polished
Weight
28.25 lb
Geometry
Legacy reference · Geometry context
Record coverage
33 preserved details · archived image · original MSRP · preserved geometry
Archive ID
78526
Model history 1 other year

Manufacturer catalog

Published sizes and colors

1 size · 1 color

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

Published sizes

M

Published colors

Natural carbon/polished

Frameset

Frame ConstructionTIG-welded/bonded
Frame MaterialCarbon fiber composite/aluminum
ForkRock Shox Judy SL
Fork MaterialAluminum/magnesium, triple-clamp crown
Rear ShockRock Shox Coupe Deluxe, 4.0" travel

Drivetrain

Component GroupGrip Shift ESP 9.0/Shimano Deore XT
ShiftersGrip Shift ESP 9.0
Front DerailleurShimano Deore XT top-swing, top-pull/braze-on
Rear DerailleurGrip Shift ESP 9.0
CranksetShimano Deore XT, 24/34/42 teeth
Bottom BracketShimano BB-UN72, 110mm spindle
BB Shell Width68mm English
Rear Cogs8-speed, 11 - 28 teeth
ChainSachs PC-41, 1/2 x 3/32"
PedalsWellgo WPD-702 clipless

Brakes

BrakesShimano Deore XT V-Brake brakes, Grip Shift ESP 9.0 levers

Cockpit & Contact Points

Headset1 1/8" threadless Aheadset SAS
HandlebarAluminum, butted
Handlebar ExtensionsAluminum
StemAluminum
SaddleWTB SSTK, hollow chromoly rails w/kevlar sides
SeatpostAluminum micro-adjust, 30.8mm diameter

Wheels & Tires

HubsFront: Formula, Rear: Shimano Deore XT
RimsMavic X517, 32-hole
SpokesDT stainless steel, 2.0mm double-butted
Spoke NipplesBrass nipples
Front Tire26 x 1.95" WTB VelociRaptor 44/50
Wheel Size26" wheels

Historical reference geometry

Geometry

Legacy reference · 6 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 tube594.4 mm
Head-tube angle70.9°
Seat-tube angle73.4°
Chainstay / rear center429.3 mm
Wheelbase1087.1 mm
Fork offset / rake40.6 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 70.9°, the head angle sits somewhat slacker than typical among mountain geometries represented in Velopedia for this period. Its 73.4° seat angle is somewhat steeper than typical among the same-period mountain references.

Compared with 1362 distinct legacy mountain geometries from model years 1996–2000. Only angular measurements are used because the historical reference frame size is unidentified.
See it in periodOpen an immediate comparison with preserved 1998 mountain geometries. The source frame size remains unidentified.
See its 1998 geometry context

Parts & serviceability

Find replacement parts

3 top part searches
Front tireMatching fit standard
26x1.95" WTB VelociRaptor 44/50 Named tire and published size
Brake padsMatching fit standard
Linear-pull brake pads Published brake type — verify pad mounting style
Bottom bracketExact archived part
Shimano BB-UN72, 110mm spindle Exact archived model
More qualified parts (5)
PedalsExact archived part
Wellgo WPD-702 clipless Exact archived model
SaddleQualified part search
WTB SSTK, hollow chromoly rails w/kevlar sides Named archived component — verify exact version
CranksetQualified part search
Shimano Deore XT, 24/34/42 teeth Named archived component — verify exact version
SeatpostMatching fit standard
30.8 mm seatpost Published diameter — verify length and setback
RimsQualified part search
Mavic X517, 32-hole 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 →
  • FrameInspect the composite sections for impact or clamp damage, then check the metal joints and welds for dents or cracking. Ask about any crash history.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 and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for 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 22 checks based on 6 archived component groups Open checklistClose checklist
0 of 22 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: 1998 Giant MCM 980 · Mountain bike, front & rear suspension · Published sizes: M

Archived: Frame: TIG-welded/bonded · Fork: Rock Shox Judy SL · Aluminum/magnesium, triple-clamp crown

Archived: Fork: Rock Shox Judy SL · Rear shock: Rock Shox Coupe Deluxe, 4.0" travel

Archived: Group: Grip Shift ESP 9.0/Shimano Deore XT · Shifters: Grip Shift ESP 9.0 · Front derailleur: Shimano Deore XT top-swing, top-pull/braze-on · Rear derailleur: Grip Shift ESP 9.0 · Crankset: Shimano Deore XT, 24/34/42 teeth · Bottom bracket: Shimano BB-UN72, 110mm spindle · Rear cogs: 8-speed, 11 - 28 teeth · Chain: Sachs PC-41, 1/2 x 3/32"

Archived: Brakes: Shimano Deore XT V-Brake brakes, Grip Shift ESP 9.0 levers

Archived: Wheel size: 26" wheels · Rims: Mavic X517, 32-hole · Hubs: Front: Formula, Rear: Shimano Deore XT · Front tire: 26 x 1.95" WTB VelociRaptor 44/50

Controls and contact points

Archived: Headset: 1 1/8" threadless Aheadset SAS · Handlebar: Aluminum, butted · Stem: Aluminum · Seatpost: Aluminum micro-adjust, 30.8mm diameter · Saddle: WTB SSTK, hollow chromoly rails w/kevlar sides · Pedals: Wellgo WPD-702 clipless

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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