Velopedia Bicycle Archive
1999 Specialized Fatboy Hemi Comp
Original specifications: N/A drivetrain · 20" wheels · legacy reference geometry.
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At a glance
- Model year
- 1999
- Category
- BMX
- Original MSRP
- $449.99
- Sizes
- Pro XL
- Colors
- Light Silver
- Geometry
- Legacy reference
- In this record
- 22 specifications · original MSRP · geometry
- Archive ID
- 86250
Model history 1 other year
Frameset
| Frame Construction | Monocoque |
|---|---|
| Frame Material | 6061 T6 aluminum |
| Fork | Specialized |
| Fork Material | Chromoly, unicrown crown |
Drivetrain
| Crankset | Specialized StrongArm 3-piece chromoly, 44 teeth |
|---|---|
| Bottom Bracket | Specialized chromoly |
| BB Shell Width | American |
| Rear Cogs | 1-speed, 16 teeth |
| Chain | KMC, 1/2 x 3/32" |
| Pedals | Specialized platform, aluminum |
Brakes
| Brakes | Tektro 912A rear brakes, Tektro 318A rear levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless Tange-Seiki Aheadset |
|---|---|
| Handlebar | Pro Design chromoly |
| Stem | Specialized forged ahead |
| Saddle | Specialized Race |
| Seatpost | Specialized aluminum, 26.6mm diameter |
Wheels & Tires
| Hubs | Front: Specialized alloy, Rear: Specialized flip-flop |
|---|---|
| Rims | Alex aluminum, 36-hole |
| Spokes | Specialized UCP, 2.0mm straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | Front: 20 x 2.125" Specialized Spanky Team, Rear: 20 x 1.85" Specialized Spanky Team |
| Wheel Size | 20" 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Historical reference geometry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 | 514.4 mm |
| Head-tube angle | 74° |
| Seat-tube angle | 71° |
| Chainstay / rear center | 393.7 mm |
| Fork offset / rake | 25.4 mm |
The preserved source contains one model-level geometry set without an identified frame size.
Parts & serviceability
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Bike-specific inspection checklist 19 checks based on 5 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 Specialized Fatboy Hemi Comp · BMX · Published sizes: Pro XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Monocoque · Fork: Specialized · Chromoly, unicrown crown
Drivetrain
Check drivetrain wear →Archived: Crankset: Specialized StrongArm 3-piece chromoly, 44 teeth · Bottom bracket: Specialized chromoly · Rear cogs: 1-speed, 16 teeth · Chain: KMC, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Tektro 912A rear brakes, Tektro 318A rear levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 20" wheels · Rims: Alex aluminum, 36-hole · Hubs: Front: Specialized alloy, Rear: Specialized flip-flop · Front tire: Front: 20 x 2.125" Specialized Spanky Team, Rear: 20 x 1.85" Specialized Spanky Team
Controls and contact points
Archived: Headset: 1 1/8" threadless Tange-Seiki Aheadset · Handlebar: Pro Design chromoly · Stem: Specialized forged ahead · Seatpost: Specialized aluminum, 26.6mm diameter · Saddle: Specialized Race · Pedals: Specialized platform, aluminum
Before and during the test ride
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Current market
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.




