
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 |
| Fork | Torker |
| Fork Material | Chromoly, unicrown crown |
| Crankset | Torker chromoly 3-piece 180mm, 44 teeth |
|---|---|
| Bottom Bracket | Sealed cartridge |
| BB Shell Width | American |
| Rear Cogs | 1-speed, 16 teeth |
| Chain | KMC, 1/2 x 3/32" |
| Pedals | Wellgo WTM-B1 platform |
| Brakes | Dia-Compe AD 990 rear brakes, Dia-Compe MX-77 rear levers |
|---|
| Headset | 1 1/8" threadless Tioga |
|---|---|
| Handlebar | Chromoly |
| Stem | Torker threadless |
| Saddle | Torker |
| Seatpost | Chromoly layback micro-adjust, 25.4mm diameter |
| Hubs | Sealed |
|---|---|
| Rims | Alex FTS-25, 48-hole |
| Spokes | Stainless steel, 2.0mm straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | Front: 20 x 2.125" 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 Use these as a historical reference, not for size-specific fit.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 Epidemic · Freestyle/jumping
Archived: Frame: Pulse-welded · Fork: Torker · Chromoly, unicrown crown
Archived: Crankset: Torker chromoly 3-piece 180mm, 44 teeth · Bottom bracket: Sealed cartridge · Rear cogs: 1-speed, 16 teeth · Chain: KMC, 1/2 x 3/32"
Archived: Brakes: Dia-Compe AD 990 rear brakes, Dia-Compe MX-77 rear levers
Archived: Wheel size: 20" wheels · Rims: Alex FTS-25, 48-hole · Hubs: Sealed · Front tire: Front: 20 x 2.125" Maxxis Maxx Daddy, Rear: 20 x 1.85" Maxxis Maxx Daddy
Archived: Headset: 1 1/8" threadless Tioga · Handlebar: Chromoly · Stem: Torker threadless · Seatpost: Chromoly layback micro-adjust, 25.4mm diameter · Saddle: Torker · Pedals: Wellgo WTM-B1 platform
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.