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Velopedia Bicycle Archive
1999 Trek 8900
Original specifications: Mountain Mix drivetrain · 26" wheels · 24 lb published weight.
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At a glance
- Model year
- 1999
- Category
- Mountain
- Original MSRP
- $1,999.99
- Sizes
- 13", 16.5", 18", 19.5", 21"
- Colors
- Trek Red
- Weight
- 24 lb
- Geometry
- Legacy reference · Geometry context
- In this record
- 33 specifications · archived image · original MSRP · geometry
- Archive ID
- 86702
Model history 1 other year
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Alpha SL aluminum |
| Fork | Rock Shox Judy SL, 3.15" travel |
| Fork Material | Aluminum/magnesium, triple-clamp crown |
| Rear Shock | N/A |
Drivetrain
| Component Group | Mountain Mix |
|---|---|
| Shifters | Shimano Deore XT RapidFire SL |
| Front Derailleur | Shimano Deore XT, top-pull/clamp-on 35.0mm |
| Rear Derailleur | Shimano XTR |
| Crankset | ICON Crankshaft, 22/32/44 teeth |
| Bottom Bracket | Shimano BB-UN52, 113mm spindle |
| BB Shell Width | 73mm English |
| Rear Cogs | 9-speed, 11 - 32 teeth |
| Chain | Shimano CN-HG72, 1/2 x 3/32" |
| Pedals | Bontrager Re-Entry |
Brakes
| Brakes | Hayes Cable-Actuated Disc brakes, Avid SD-1.9 L levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless Aheadset SA |
|---|---|
| Handlebar | Icon 2014 |
| Handlebar Extensions | ICON Fatty |
| Stem | Icon |
| Saddle | Bontrager FS Race |
| Seatpost | ICON OZ, 27.2mm diameter |
Wheels & Tires
| Hubs | Rolf |
|---|---|
| Rims | Rolf Dolomite Disk, 24-hole |
| Spokes | DT stainless steel, 2.0mm double-butted |
| Spoke Nipples | Alloy nipples |
| Front Tire | Front: 26 x 2.10" Bontrager Revolt ST-2 kevlar, Rear: 26 x 1.90" Bontrager Revolt ST-2 kevlar |
| Wheel Size | 26" wheels |
Historical reference geometry
Geometry
This historical geometry describes the model, but the original source does not identify its frame size. Use it as a period reference, not a size-specific fit comparison.
| Measurement | Legacy reference |
|---|---|
| Top tube | 584 mm |
| Head-tube angle | 71° |
| Seat-tube angle | 73° |
| Chainstay / rear center | 424 mm |
| Wheelbase | 1057 mm |
| Fork offset / rake | 42 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° seat angle is close to the middle of the group among the same-period mountain references.
Compared with 1159 distinct legacy mountain geometries from model years 1997–2001. Only angular measurements are used because the historical reference frame size is unidentified.See it in periodOpen an immediate comparison with preserved 1999 mountain geometries. The source frame size remains unidentified.
See its 1999 geometry context Parts & serviceability
Find replacement parts
Shimano CN-HG72, 1/2 x 3/32"
Exact archived model
Shimano BB-UN52, 113mm spindle
Exact archived model
Bontrager Re-Entry
Named archived component — verify exact version
More qualified parts (4)
Bontrager FS Race
Named archived component — verify exact version
Shimano XTR
Interpreted as Shimano XTR · 9-speed · mechanical Named component · published drivetrain speed — verify exact version
Shimano Deore XT RapidFire SL
Interpreted as Shimano Deore XT · 9-speed · mechanical Named component · published drivetrain speed — verify exact version
27.2 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 →
- BrakesMake sure both cables move freely and the calipers release cleanly. Check pad thickness, rotor wear and rotor alignment.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 9-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: 1999 Trek 8900 · Mountain bike, front suspension · Published sizes: 13", 16.5", 18", 19.5", 21"
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: Rock Shox Judy SL, 3.15" travel · Aluminum/magnesium, triple-clamp crown
Suspension
Evaluate the suspension →Archived: Fork: Rock Shox Judy SL, 3.15" travel
Drivetrain
Check drivetrain wear →Archived: Group: Mountain Mix · Shifters: Shimano Deore XT RapidFire SL · Front derailleur: Shimano Deore XT, top-pull/clamp-on 35.0mm · Rear derailleur: Shimano XTR · Crankset: ICON Crankshaft, 22/32/44 teeth · Bottom bracket: Shimano BB-UN52, 113mm spindle · Rear cogs: 9-speed, 11 - 32 teeth · Chain: Shimano CN-HG72, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Hayes Cable-Actuated Disc brakes, Avid SD-1.9 L levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26" wheels · Rims: Rolf Dolomite Disk, 24-hole · Hubs: Rolf · Front tire: Front: 26 x 2.10" Bontrager Revolt ST-2 kevlar, Rear: 26 x 1.90" Bontrager Revolt ST-2 kevlar
Controls and contact points
Archived: Headset: 1 1/8" threadless Aheadset SA · Handlebar: ICON 2014 · Stem: ICON · Seatpost: ICON OZ, 27.2mm diameter · Saddle: Bontrager FS Race · Pedals: Bontrager Re-Entry
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.