
ENVE Twin Bolt Seatpost - 25mm Offset UD Carbon, 25.4mm
25.4mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: N/A drivetrain · 20" wheels · legacy reference geometry.
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At a glance
| Frame Construction | Pulse-welded |
|---|---|
| Frame Material | Chromoly seat tube/hi-tensile steel |
| Fork | Torker |
| Fork Material | Chromoly, unicrown crown |
| Crankset | 1-piece chromoly 175mm, 44 teeth |
|---|---|
| Bottom Bracket | Opc |
| BB Shell Width | American |
| Rear Cogs | 1-speed, 16 teeth |
| Chain | KMC, 1/2 x 1/8" |
| Pedals | Alloy platform |
| Brakes | Aluminum U-brake rear brakes, alloy rear levers |
|---|
| Headset | 1 1/8" threadless YST steel |
|---|---|
| Handlebar | Chromoly |
| Stem | Torker threadless |
| Saddle | Torker padded |
| Seatpost | Layback micro-adjust, 25.4mm diameter |
| Hubs | Steel, nutted |
|---|---|
| Rims | Alex 7X, 48-hole |
| Spokes | 2.0mm straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | Front: 20 x 2.25" Maxxis Maxx Daddy, Rear: 20 x 1.85" Maxxis Maxx Daddy |
| Wheel Size | 20" wheels |
Model-level measurements; the frame size was not recorded. Use these as a historical reference, not for size-specific fit.
Reference frame view
Select an available measurement to locate it on the frame.
| Measurement | Legacy reference |
|---|---|
| Top tube | 470 mm |
| Head-tube angle | 71° |
| Seat-tube angle | 68° |
| Chainstay / rear center | 380 mm |
| Wheelbase | 900 mm |
The preserved source contains one model-level geometry set without an identified frame size.
Parts & serviceability

25.4mm
Replacement option · verify fit
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. 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.
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.
Archived: 1999 Torker Virus · Freestyle/jumping
Archived: Frame: Pulse-welded · Fork: Torker · Chromoly, unicrown crown
Archived: Crankset: 1-piece chromoly 175mm, 44 teeth · Bottom bracket: OPC · Rear cogs: 1-speed, 16 teeth · Chain: KMC, 1/2 x 1/8"
Archived: Brakes: Aluminum U-brake rear brakes, alloy rear levers
Archived: Wheel size: 20" wheels · Rims: Alex 7X, 48-hole · Hubs: Steel, nutted · Front tire: Front: 20 x 2.25" Maxxis Maxx Daddy, Rear: 20 x 1.85" Maxxis Maxx Daddy
Archived: Headset: 1 1/8" threadless YST steel · Handlebar: Chromoly · Stem: Torker threadless · Seatpost: Layback micro-adjust, 25.4mm diameter · Saddle: Torker padded · Pedals: Alloy platform
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.