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Velopedia Bicycle Archive
1998 Jamis Eureka
Original manufacturer specifications including Shimano STX-RC drivetrain, 26" wheels, geometry for 1 published size.
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What Velopedia knows
- Model year
- 1998
- Category
- Mountain
- Original MSRP
- $849.95
- Sizes
- 12", 14", 17", 19", 21"
- Colors
- Ball-Burnished, Electric Blue
- Geometry
- Legacy reference · Geometry context
- Record coverage
- 32 preserved details · archived image · original MSRP · preserved geometry
- Archive ID
- 72268
Model history 9 other years
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | 7005 aluminum |
| Fork | Answer Manitou Spyder R |
| Fork Material | Aluminum/magnesium, triple-clamp crown |
| Rear Shock | N/A |
Drivetrain
| Component Group | Shimano STX-RC |
|---|---|
| Shifters | Shimano STX-RC RapidFire SL |
| Front Derailleur | Shimano STX-RC top-swing, top-pull/clamp-on 31.8mm |
| Rear Derailleur | Shimano STX-RC |
| Crankset | Shimano STX-RC, 24/34/42 teeth |
| Bottom Bracket | Shimano BB-LP26, 110mm spindle |
| BB Shell Width | 68mm English |
| Rear Cogs | 8-speed, 11 - 30 teeth |
| Chain | Shimano CN-IG51, 1/2 x 3/32" |
| Pedals | Wellgo w/clips & straps |
Brakes
| Brakes | Shimano STX-RC V-Brake brakes, Shimano STX-RC levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" Aheadset STS |
|---|---|
| Handlebar | Kalloy Riser 6061 butted |
| Handlebar Extensions | Not included |
| Stem | Jamis Flip-Flop |
| Saddle | Jamis Comp |
| Seatpost | Kalloy aluminum micro-adjust, 27.0mm diameter |
Wheels & Tires
| Hubs | Front: Formula aluminum, Q/R, Rear: Shimano STX-RC |
|---|---|
| Rims | Sun Rims CR18, 32-hole |
| Spokes | Stainless steel, 2.0mm straight gauge |
| Spoke Nipples | Alloy nipples |
| Front Tire | 26 x 2.20" WTB Primal Raptor |
| Wheel Size | 26" wheels |
Historical reference geometry
Geometry
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.
| Measurement | Legacy reference |
|---|---|
| Top tube | 578 mm |
| Head-tube angle | 71° |
| Seat-tube angle | 73.5° |
| Chainstay / rear center | 425 mm |
| Wheelbase | 1055 mm |
| Fork offset / rake | 40.6 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 71°, the head angle sits close to the middle of the group among mountain geometries represented in Velopedia for this period. Its 73.5° 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
Shimano CN-IG51, 1/2 x 3/32"
Exact archived model
26x2.20" WTB Primal Raptor
Named tire and published size
Linear-pull brake pads
Published brake type — verify pad mounting style
More qualified parts (5)
Shimano BB-LP26, 110mm spindle
Exact archived model
Shimano STX-RC, 24/34/42 teeth
Named archived component — verify exact version
Shimano STX-RC
Interpreted as Shimano STX RC · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
Shimano STX-RC RapidFire SL
Interpreted as Shimano STX RC · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
27 mm seatpost
Published diameter — verify length and setback
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. Velopedia may also earn from qualifying retailer 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
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.
Identity and fit
Follow the full used-bike inspection order →Archived: 1998 Jamis Eureka · Mountain bike, front suspension · Published sizes: 12", 14", 17", 19", 21"
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: Answer Manitou Spyder R · Aluminum/magnesium, triple-clamp crown
Suspension
Evaluate the suspension →Archived: Fork: Answer Manitou Spyder R
Drivetrain
Check drivetrain wear →Archived: Group: Shimano STX-RC · Shifters: Shimano STX-RC RapidFire SL · Front derailleur: Shimano STX-RC top-swing, top-pull/clamp-on 31.8mm · Rear derailleur: Shimano STX-RC · Crankset: Shimano STX-RC, 24/34/42 teeth · Bottom bracket: Shimano BB-LP26, 110mm spindle · Rear cogs: 8-speed, 11 - 30 teeth · Chain: Shimano CN-IG51, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Shimano STX-RC V-Brake brakes, Shimano STX-RC levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26" wheels · Rims: Sun Rims CR18, 32-hole · Hubs: Front: Formula aluminum, Q/R, Rear: Shimano STX-RC · Front tire: 26 x 2.20" WTB Primal Raptor
Controls and contact points
Archived: Headset: 1 1/8" Aheadset STS · Handlebar: Kalloy Riser 6061 butted · Stem: Jamis Flip-Flop · Seatpost: Kalloy aluminum micro-adjust, 27.0mm diameter · Saddle: Jamis Comp · Pedals: Wellgo w/clips & straps
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.