Same brand and year
Velopedia Bicycle Archive
2005 Psycle Werks Demon
Original specifications: 6.25 lb published weight · geometry for 1 published size.
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At a glance
- Model year
- 2005
- Category
- Mountain
- Original MSRP
- $1,650.00
- Sizes
- 16", 18", 20"
- Colors
- Anodized Black/Powered Coated Red
- Weight
- 6.25 lb
- Geometry
- Legacy reference · Geometry context
- In this record
- 19 specifications · archived image · original MSRP · geometry
- Archive ID
- 92955
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | 6061 T6 aluminum |
| Fork | White Brothers TM 1.0 |
| Fork Material | True Temper chromoly, dual crown |
| Rear Shock | Fox with PUSH up-grade |
Drivetrain
| Shifters | SRAM X-9 |
|---|---|
| Front Derailleur | Campagnolo Chorus Triple |
| Rear Derailleur | SRAM X.9 |
| Crankset | Da Vinci Designs, 23/34/45/57 teeth |
| Bottom Bracket | FSA Ultimax |
| BB Shell Width | 73mm English |
Brakes
| Brakes | Avid Juicy Disc front/Disc only 6" or 8" rotors rear brakes, Avid Speed Dial 7 levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" |
|---|---|
| Seatpost | 27.2mm diameter |
Historical reference geometry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 | 579.1 mm |
| Head-tube angle | 71° |
| Seat-tube angle | 73.5° |
| Chainstay / rear center | 431.8 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Model-level historical reference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 somewhat steeper than typical among mountain geometries represented in Velopedia for this period. Its 73.5° seat angle is toward the steeper end among the same-period mountain references.
Compared with 261 distinct legacy mountain geometries from model years 2003–2006. Only angular measurements are used because the historical reference frame size is unidentified.Parts & serviceability
Find replacement parts
FSA Ultimax
Named archived component — verify dimensions
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 →
- 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 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 →
Bike-specific inspection checklist 17 checks based on 4 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: 2005 Psycle Werks Demon · Mountain bike, front & rear suspension · Published sizes: 16", 18", 20"
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: White Brothers TM 1.0 · True Temper chromoly, dual crown
Suspension
Evaluate the suspension →Archived: Fork: White Brothers TM 1.0 · Rear shock: Fox with PUSH up-grade
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM X-9 · Front derailleur: Campagnolo Chorus Triple · Rear derailleur: SRAM X.9 · Crankset: Da Vinci Designs, 23/34/45/57 teeth · Bottom bracket: FSA Ultimax
Brakes
Inspect the brakes →Archived: Brakes: Avid Juicy Disc front/Disc only 6" or 8" rotors rear brakes, Avid Speed Dial 7 levers
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.