
ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: Single Speed Mix drivetrain · 29" wheels.
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At a glance
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | M5 aluminum |
| Fork | Fox F29RL, 90mm travel |
| Fork Material | Alloy Steerer, single crown |
| Component Group | Single Speed Mix |
|---|---|
| Crankset | SRAM alloy S-1250, 32T teeth |
| Cassette | Single speed Cr-Mo |
| Rear Cogs | 1-speed, 20 teeth |
| Chain | KMC X10 |
| Pedals | Resin Test Ride Pedals |
| Brakes | Avid Elixir R SL brakes, Avid Elixir R SL levers |
|---|
| Headset | 1 1/8" threadless Campy spec integrated sealed cartridge bearing |
|---|---|
| Handlebar | Specialized XC flat 31.8mm |
| Handlebar Extensions | Not included |
| Stem | Specialized XC |
| Saddle | Specialized BG Phenom Comp |
| Seatpost | Alloy single bolt setback, 30.9mm diameter |
| Hubs | Front: Specialized Hi Lo disc, Rear: DT Swiss 240S |
|---|---|
| Rims | DT Swiss 520SL, 32-hole |
| Spokes | DT Swiss Champion stainless, 15ga. (1.8mm) butted |
| Front Tire | Front: 29 x 2.0" S-Works The Captain, Rear: 29 x 1.95" S-Works Renegade |
| Wheel Size | 29" 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: 2011 Specialized Stumpjumper SS 29er · Mountain bike, front & rear suspension · Published sizes: 15.5", 17.5", 19", 21", 23"
Archived: Frame: TIG-welded · Fork: Fox F29RL, 90mm travel · Alloy Steerer, single crown
Archived: Fork: Fox F29RL, 90mm travel
Archived: Group: Single Speed Mix · Crankset: SRAM alloy S-1250, 32T teeth · Cassette: Single speed Cr-Mo · Rear cogs: 1-speed, 20 teeth · Chain: KMC X10
Archived: Brakes: Avid Elixir R SL brakes, Avid Elixir R SL levers
Archived: Wheel size: 29" wheels · Rims: DT Swiss 520SL, 32-hole · Hubs: Front: Specialized Hi Lo disc, Rear: DT Swiss 240S · Front tire: Front: 29 x 2.0" S-Works The Captain, Rear: 29 x 1.95" S-Works Renegade
Archived: Headset: 1 1/8" threadless Campy spec integrated sealed cartridge bearing · Handlebar: Specialized XC flat 31.8mm · Stem: Specialized XC · Seatpost: Alloy single bolt setback, 30.9mm diameter · Saddle: Specialized BG Phenom Comp · Pedals: Resin Test Ride Pedals
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.