
Velopedia Bicycle Archive
1999 Tomac 204 Magnum
Original manufacturer specifications including Mountain Mix drivetrain, 26" wheels, geometry for 1 published size.
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What Velopedia knows
- Model year
- 1999
- Category
- Mountain
- Sizes
- S, M, L
- Colors
- Guards Red
- Geometry
- Legacy reference · Geometry context
- Record coverage
- 31 preserved details · archived image · preserved geometry
- Archive ID
- 87298
Model history 1 other year
Frameset
| Frame Construction | MIG-welded |
|---|---|
| Frame Material | Easton Custom Magnum |
| Fork | Answer Manitou X-Vert Carbon, 7.0" travel |
| Fork Material | Aluminum/magnesium, double triple-clamp crown |
| Rear Shock | Answer Bazooka Big Shaft, 8.0" travel |
Drivetrain
| Component Group | Mountain Mix |
|---|---|
| Shifters | SRAM ESP 9.0 SL rear |
| Front Derailleur | Mountain Race Products DH-1, chain retention device |
| Rear Derailleur | SRAM ESP 9.0 SL |
| Crankset | Race Face Turbine DH |
| Bottom Bracket | Race Face Taperlock, 145mm spindle |
| BB Shell Width | 100mm English |
| Rear Cogs | 9-speed, 11 - 28 teeth |
| Chain | Sachs SC-M90, 1/2 x 3/32" |
| Pedals | Atomic Flatboy |
Brakes
| Brakes | Magura Gustav M Disc brakes, Magura Gustav M levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless Race Face Real Seal |
|---|---|
| Handlebar | Profile |
| Handlebar Extensions | Not included |
| Stem | Profile |
| Saddle | Tioga Multicontrol XL |
| Seatpost | Profile, 31.6mm diameter |
Wheels & Tires
| Hubs | Mavic Dee Max Disc |
|---|---|
| Rims | Mavic Dee Max, 36-hole |
| Spokes | Mavic stainless steel, 2.0mm double-butted |
| Spoke Nipples | Brass nipples |
| Front Tire | 26 x 2.30" Tioga Factory DH kevlar |
| 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Historical reference geometry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 | 596.9 mm |
| Head-tube angle | 68° |
| Seat-tube angle | 65° |
| Chainstay / rear center | 438.1 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 68°, the head angle sits toward the slacker end among mountain geometries represented in Velopedia for this period. Its 65° seat angle is toward the more relaxed end 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.Parts & serviceability
Find replacement parts
More qualified parts (1)
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 →- FrameInspect the complete frame and fork in bright light for cracks, dents, distortion, corrosion, impact marks, suspicious paint differences or signs of repair. Check the head tube, bottom-bracket area, dropouts, joints and clamped surfaces especially closely.Inspect the frame and fork →
- BrakesBoth brakes should stop firmly and release without rubbing. Inspect pad thickness, rotor wear and alignment, and check the cables or hoses for damage.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 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 22 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 Tomac 204 Magnum · Mountain bike, front & rear suspension · Published sizes: S, M, L
Frame and fork
Inspect the frame and fork →Archived: Frame: MIG-welded · Fork: Answer Manitou X-Vert Carbon, 7.0" travel · Aluminum/magnesium, double triple-clamp crown
Suspension
Evaluate the suspension →Archived: Fork: Answer Manitou X-Vert Carbon, 7.0" travel · Rear shock: Answer Bazooka Big Shaft, 8.0" travel
Drivetrain
Check drivetrain wear →Archived: Group: Mountain Mix · Shifters: SRAM ESP 9.0 SL rear · Front derailleur: Mountain Race Products DH-1, chain retention device · Rear derailleur: SRAM ESP 9.0 SL · Crankset: Race Face Turbine DH · Bottom bracket: Race Face Taperlock, 145mm spindle · Rear cogs: 9-speed, 11 - 28 teeth · Chain: Sachs SC-M90, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Magura Gustav M Disc brakes, Magura Gustav M levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26" wheels · Rims: Mavic Dee Max, 36-hole · Hubs: Mavic Dee Max Disc · Front tire: 26 x 2.30" Tioga Factory DH kevlar
Controls and contact points
Archived: Headset: 1 1/8" threadless Race Face Real Seal · Handlebar: Profile · Stem: Profile · Seatpost: Profile, 31.6mm diameter · Saddle: Tioga Multicontrol XL · Pedals: Atomic Flatboy
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.


