
ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: Mountain Mix drivetrain · 26" wheels.
Selling this bike? Create a shareable bike record
At a glance
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Hi-Tensile steel |
| Fork | Marzocchi DJ 3.5, 100mm |
| Fork Material | Steel/aluminum, single crown |
| Component Group | Mountain Mix |
|---|---|
| Crankset | TruVativ Ruktion, 32 teeth |
| Bottom Bracket | TruVativ Howitzer XR |
| BB Shell Width | 73mm |
| Rear Cogs | 1-speed, 16 teeth |
| Chain | KMC Z-610H |
| Pedals | Specialized alloy platform |
| Brakes | Avid BB5 w/6" rotor brakes, Avid FR5 levers |
|---|
| Headset | 1 1/8" threadless Tank FS |
|---|---|
| Handlebar | Alloy OS riser |
| Handlebar Extensions | Not included |
| Stem | TruVativ Hussefelt |
| Saddle | Fuse 8 Jumping |
| Seatpost | Alloy micro adjust, 30.9mm diameter |
| Hubs | Specialized P.Disc |
|---|---|
| Rims | Specialized/Alex HRD 26, 36-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Front Tire | 26 x 2.20" Specialized Rhythm |
| Wheel Size | 26" wheels |
Parts & serviceability

30.9x400mm
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: 2007 Specialized P.Series P.1 · Freestyle/jumping · Published sizes: One size fits all
Archived: Frame: TIG-welded · Fork: Marzocchi DJ 3.5, 100mm · Steel/aluminum, single crown
Archived: Fork: Marzocchi DJ 3.5, 100mm
Archived: Group: Mountain Mix · Crankset: TruVativ Ruktion, 32 teeth · Bottom bracket: TruVativ Howitzer XR · Rear cogs: 1-speed, 16 teeth · Chain: KMC Z-610H
Archived: Brakes: Avid BB5 w/6" rotor brakes, Avid FR5 levers
Archived: Wheel size: 26" wheels · Rims: Specialized/Alex HRD 26, 36-hole · Hubs: Specialized P.Disc · Front tire: 26 x 2.20" Specialized Rhythm
Archived: Headset: 1 1/8" threadless Tank FS · Handlebar: Alloy OS riser · Stem: TruVativ Hussefelt · Seatpost: Alloy micro adjust, 30.9mm diameter · Saddle: Fuse 8 Jumping · Pedals: Specialized alloy platform
This archive record has limited published detail. Share what would help another rider understand how this model fit, rode and held up over time. Velopedia reviews every contribution before publication.
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.