Velopedia Bicycle Archive

1998 Boulder Bikes Starship (XTR)

Original manufacturer specifications including Shimano XTR drivetrain, 26" wheels, 25 lb published weight.

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What Velopedia knows

Model year
1998
Category
Mountain
Original MSRP
$3,499.00
Sizes
Custom, L, M, S, XS
Colors
Black, Blue, Green, Red, Silver, Team Flames, White, Yellow
Weight
25 lb
Geometry
Legacy reference · Geometry context
Record coverage
33 preserved details · original MSRP · preserved geometry
Archive ID
75750
Image not available

Manufacturer catalog

Published sizes and colors

5 sizes · 8 colors

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

Published sizes

CustomLMSXS

Published colors

BlackBlueGreenRedSilverTeam Flames
+ 2 more colors + 4 more colors
SilverTeam FlamesWhiteYellow

Frameset

Frame ConstructionTIG-welded
Frame MaterialEaston EA60 ProGram tapered aluminum
ForkRock Shox Judy SL
Fork MaterialAluminum/magnesium, triple-clamp crown
Rear ShockRisse Genesis, 3.0" travel

Drivetrain

Component GroupShimano XTR
ShiftersShimano XTR RapidFire SL
Front DerailleurShimano XTR top-swing, top-pull/clamp-on 35.0mm
Rear DerailleurShimano XTR GS
CranksetShimano XTR M950, 24/34/46 teeth
Bottom BracketShimano BB-M950, 116mm spindle
BB Shell Width68mm English
Rear Cogs8-speed, 12 - 32 teeth
ChainShimano CN-IG90, 1/2 x 3/32"
PedalsNot included

Brakes

BrakesShimano XTR V-Brake brakes, Shimano XTR levers

Cockpit & Contact Points

Headset1 1/8" threadless Chris King NoThreadSet
HandlebarControl Tech aluminum
Handlebar ExtensionsNot included
StemControl Tech
SaddleBontrager w/titanium rails
SeatpostControl Tech Control Post, 31.6mm diameter

Wheels & Tires

HubsShimano XTR
RimsMavic X517, 32-hole
SpokesWheelsmith stainless steel, 1.8mm double-butted
Spoke NipplesAlloy nipples
Front Tire26 x 1.95" WTB VelociRaptor 44/50 kevlar
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Historical reference geometry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 tube584.2 mm
Head-tube angle71°
Seat-tube angle73.5°
Chainstay / rear center429.3 mm
Wheelbase1079.5 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 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

3 top part searches
ChainMatching fit standard
Shimano CN-IG90, 1/2 x 3/32" Exact archived model
Front tireMatching fit standard
26x1.95" WTB VelociRaptor 44/50 kevlar Named tire and published size
Brake padsMatching fit standard
Linear-pull brake pads Published brake type — verify pad mounting style
More qualified parts (6)
Bottom bracketExact archived part
Shimano BB-M950, 116mm spindle Exact archived model
CranksetQualified part search
Shimano XTR M950, 24/34/46 teeth Named archived component — verify exact version
Rear derailleurMatching configuration
Shimano XTR GS Interpreted as Shimano XTR · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
ShiftersQualified part search
Shimano XTR RapidFire SL Interpreted as Shimano XTR · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
SeatpostMatching fit standard
31.6 mm seatpost Published diameter — verify length and setback
HeadsetQualified part search
1 1/8" threadless Chris King NoThreadSet 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. 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 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 Boulder Bikes Starship (XTR) · Mountain bike, front & rear suspension · Published sizes: Custom, L, M, S, XS

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

Archived: Fork: Rock Shox Judy SL · Rear shock: Risse Genesis, 3.0" travel

Archived: Group: Shimano XTR · Shifters: Shimano XTR RapidFire SL · Front derailleur: Shimano XTR top-swing, top-pull/clamp-on 35.0mm · Rear derailleur: Shimano XTR GS · Crankset: Shimano XTR M950, 24/34/46 teeth · Bottom bracket: Shimano BB-M950, 116mm spindle · Rear cogs: 8-speed, 12 - 32 teeth · Chain: Shimano CN-IG90, 1/2 x 3/32"

Archived: Brakes: Shimano XTR V-Brake brakes, Shimano XTR levers

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

Controls and contact points

Archived: Headset: 1 1/8" threadless Chris King NoThreadSet · Handlebar: Control Tech aluminum · Stem: Control Tech · Seatpost: Control Tech Control Post, 31.6mm diameter · Saddle: Bontrager w/titanium rails · Pedals: Not included

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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