Velopedia Bicycle Archive
1997 Diamondback Assault
BMX bicycle from the Velopedia specification archive.
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- Original MSRP
- $220.00
- Sizes
- Boys 9.5"
- Colors
- Black, Chrome-Plated
- Weight
- 26 lb
- Geometry
- Legacy reference · Ride analysis
- Archive ID
- 63088
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Velopedia analysis
What the specifications mean
On the steel frame, paint damage and moisture entry deserve attention because corrosion can begin at scratches, vent holes or internal surfaces. The archive lists a published weight of 26 lb. Treat it as a reference for the documented build because frame size, pedals, tire setup and production substitutions can change the actual scale reading. The archive lists an original MSRP of $220.00. That is launch-price context, not a statement about the bike’s present condition or current market value.
Frame material
Steel
Paint damage and moisture entry matter because corrosion can start externally or inside the frame.
Published weight
26 lb
Frame size, pedals, tire setup and production substitutions can change the measured result.
Original MSRP
$220.00
Historical launch-position context—not a current valuation or asking price.
Understand MSRP and market evidence →
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 →- FrameCheck paint chips, vent holes and the inside of the seat tube for corrosion. Also look for dents, bent tubes and cracking around welded or brazed joints.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- DrivetrainShift through the full range under light load, measure chain wear and inspect the cassette or freewheel teeth. Skipping or hesitation can indicate wear, poor adjustment or mismatched parts.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 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: 1997 Diamondback Assault · BMX · Published sizes: Boys 9.5"
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: Akisu · Chromoly, unicrown crown
Drivetrain
Check drivetrain wear →Archived: Crankset: 1-piece chromoly, 44 teeth · Bottom bracket: Victor VPB-35 · Rear cogs: 1-speed, 16 teeth · Chain: KMC 410, 1/2 x 1/8"
Brakes
Inspect the brakes →Archived: Brakes: Tektro 869AG brakes, Lee Chi 316A-1 levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 20" wheels · Rims: Weinmann 4019, 36-hole · Hubs: King Kong 370 · Front tire: Front: 20 x 2.125" Comp III style, Rear: 20 x 1.75" Comp III style
Controls and contact points
Archived: Headset: 1" Victor VP-H75 · Handlebar: Hsin Lung · Stem: Hsin Lung · Seatpost: Chromoly, 26.0 mm diameter · Saddle: Velo VL-247 · Pedals: Wellgo LU-363
Before and during the test ride
Follow the full used-bike inspection order →Interpretation based on the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Chromoly main triangle/hi-tensile steel rear stays |
| Fork | Akisu |
| Fork Material | Chromoly, unicrown crown |
| Rear Shock | N/A |
Drivetrain
| Component Group | N/A |
|---|---|
| Shifters | N/A |
| Front Derailleur | N/A |
| Rear Derailleur | N/A |
| Crankset | 1-piece chromoly, 44 teeth |
| Bottom Bracket | Victor VPB-35 |
| BB Shell Width | 68mm Threadless |
| Rear Cogs | 1-speed, 16 teeth |
| Chain | KMC 410, 1/2 x 1/8" |
| Pedals | Wellgo LU-363 |
Brakes
| Brakes | Tektro 869AG brakes, Lee Chi 316A-1 levers |
|---|
Cockpit & Contact Points
| Headset | 1" Victor VP-H75 |
|---|---|
| Handlebar | Hsin Lung |
| Handlebar Extensions | N/A |
| Stem | Hsin Lung |
| Saddle | Velo VL-247 |
| Seatpost | Chromoly, 26.0 mm diameter |
Wheels & Tires
| Hubs | King Kong 370 |
|---|---|
| Rims | Weinmann 4019, 36-hole |
| Spokes | Shuhn Lih steel, 2.0mm straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | Front: 20 x 2.125" Comp III style, Rear: 20 x 1.75" Comp III style |
| Wheel Size | 20" 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 | 533.4 mm |
| Head-tube angle | 75° |
| Seat-tube angle | 71° |
| Chainstay / rear center | 393.7 mm |
| Wheelbase | 965.2 mm |
| Fork offset / rake | 30.5 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 interpretation
What this geometry means
Legacy reference geometry
Fit reference
The historical source lists a 533.4 mm top-tube length, but it does not identify which frame size this model-level reference describes or whether the historical field was measured horizontally. Treat it as an archival frame reference rather than a size-specific fit recommendation. Its 71° seat-tube angle describes the reference frame’s seat-line orientation. Actual seated position still depends on frame size, saddle height and fore-aft adjustment.
Handling tendencies
The 75° head angle points to relatively quick-steering steering geometry. Wheelbase is listed at 965.2 mm, but because the historical source does not identify frame size, it is retained as a model reference rather than used for a size-normalized handling conclusion. Fork offset is listed at 30.5 mm. Offset works with head angle and wheel size to determine trail, so it is useful steering evidence even though the archive does not provide enough information here to calculate trail reliably.
This is historical model-level reference geometry, not a known frame-size geometry table or a ride test. Frame size, rider proportions, cockpit setup, tires, suspension and components can materially change fit and handling.
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.