
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.
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At a glance
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | A1 Premium Aluminum |
| Fork | Marzocchi MZ Comp, 100mm |
| Fork Material | Aluminum/magnesium, single crown |
| Component Group | Mountain Mix |
|---|---|
| Crankset | Truvativ Blaze, 32 teeth |
| Bottom Bracket | TruVativ, 113mm spindle |
| BB Shell Width | 68mm English |
| Rear Cogs | 1-speed, 16 teeth |
| Chain | Shimano CN-IG31, 1/2 x 3/32" |
| Pedals | Aluminum platform |
| Brakes | Tektro IO disc brakes, Tektro aluminum levers |
|---|
| Headset | 1 1/8" threadless sealed cartridge |
|---|---|
| Handlebar | Aluminum |
| Stem | Specialized Mobius |
| Saddle | Specialized BG Sport ATB |
| Seatpost | Aluminum micro-adjust, 30.9mm diameter |
| Hubs | Joytech QR |
|---|---|
| Rims | Sun Rims Ditch Witch, 36-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 26 x 2.20" Specialized Enduro Sport |
| 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: 2005 Specialized Hardrock Single Speed Disc · Mountain bike, front suspension · Published sizes: XS, S, M, L, XL, XXL
Archived: Frame: TIG-welded · Fork: Marzocchi MZ Comp, 100mm · Aluminum/magnesium, single crown
Archived: Fork: Marzocchi MZ Comp, 100mm
Archived: Group: Mountain Mix · Crankset: Truvativ Blaze, 32 teeth · Bottom bracket: TruVativ, 113mm spindle · Rear cogs: 1-speed, 16 teeth · Chain: Shimano CN-IG31, 1/2 x 3/32"
Archived: Brakes: Tektro IO disc brakes, Tektro aluminum levers
Archived: Wheel size: 26" wheels · Rims: Sun Rims Ditch Witch, 36-hole · Hubs: Joytech QR · Front tire: 26 x 2.20" Specialized Enduro Sport
Archived: Headset: 1 1/8" threadless sealed cartridge · Handlebar: Aluminum · Stem: Specialized Mobius · Seatpost: Aluminum micro-adjust, 30.9mm diameter · Saddle: Specialized BG Sport ATB · Pedals: Aluminum platform
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.