
ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: Shimano Deore XT · 10-speed rear derailleur · 29 wheels.
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At a glance
| Frame Construction | Specialized M4 aluminum, Women's XC 29er Geometry, women's fully butted tubesets w/ smooth welds, integrated headtube forged post-mount 160mm dropouts, replaceable hanger |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Reba RL 29, Solo Air spring, TurnKey damping w/ PushLoc remote lockout, tapered alloy steerer, 32mm alloy stanchions, external rebound adjust, size-specific 80/100mm travel |
| Fork Material | Suspension |
| Component Group | Mountian mix |
|---|---|
| Shifters | Shimano Deore, 10-speed Rapidfire Plus, SL type, I-spec |
| Front Derailleur | SRAM X7, 10-speed, 2x10, high mount |
| Rear Derailleur | Shimano Deore XT Shadow Plus, 10-speed, SGS cage |
| Crankset | Custom SRAM S-1255, 2 pc., 10-speed XC double |
| Bottom Bracket | SRAM GXP, 73mm |
| BB Shell Width | 73mm |
| Rear Cogs | SRAM PG 1030, 10-speed, 11-36 |
| Chain | KMC X10L, 10-speed, reusable Missing Link |
| Pedals | Composite platform, w/ reflectors, 9/16" |
| Brakes | Shimano BR-M506, hydraulic disc, dual piston, resin pads |
|---|
| Headset | 1-1/8" sealed Cr-Mo cartridge bearings integrated w/ headset |
|---|---|
| Handlebar | Specialized flat, 6061 double butted alloy, 9-degree backsweep, 31.8mm |
| Stem | Specialized, 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware |
| Saddle | Body Geometry Women's Riva Comp, hollow Cr-Mo rails, 155mm |
| Seatpost | Alloy, 2-bolt, 12.5mm offset, 30.9mm, anti-corrosion hardware |
| Hubs | Specialized Hi Lo disc, alloy, RCC bearing system, QR, 28h, Specialized Hi Lo disc, alloy, RCC bearing system, QR, 32h |
|---|---|
| Rims | Specialized Stout XC SL, 29" disc, alloy double-wall, sleeve joint, 26mm inner width, 28/32h |
| Spokes | Stainless, 14g |
| Front Tire | Specialized Ground Control, 60TPI, folding bead, 29x2.1", Specialized Fast Trak Control, 60TPI, 2Bliss Ready, folding bead, 29x2.0" |
| Wheel Size | 29 |
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: 2015 Specialized Jett LTD · Mountain Hardtail · Published sizes: S, M, L
Archived: Frame: Specialized M4 aluminum, Women's XC 29er Geometry, women's fully butted tubesets w/ smooth welds, integrated headtube forged post-mount 160mm dropouts, replaceable hanger · Fork: RockShox Reba RL 29, Solo Air spring, TurnKey damping w/ PushLoc remote lockout, tapered alloy steerer, 32mm alloy stanchions, external rebound adjust, size-specific 80/100mm travel · Suspension
Archived: Fork: RockShox Reba RL 29, Solo Air spring, TurnKey damping w/ PushLoc remote lockout, tapered alloy steerer, 32mm alloy stanchions, external rebound adjust, size-specific 80/100mm travel
Archived: Group: Mountian mix · Shifters: Shimano Deore, 10-speed Rapidfire Plus, SL type, I-spec · Front derailleur: SRAM X7, 10-speed, 2x10, high mount · Rear derailleur: Shimano Deore XT Shadow Plus, 10-speed, SGS cage · Crankset: Custom SRAM S-1255, 2 pc., 10-speed XC double · Bottom bracket: SRAM GXP, 73mm · Rear cogs: SRAM PG 1030, 10-speed, 11-36 · Chain: KMC X10L, 10-speed, reusable Missing Link
Archived: Brakes: Shimano BR-M506, hydraulic disc, dual piston, resin pads
Archived: Wheel size: 29 · Rims: Specialized Stout XC SL, 29" disc, alloy double-wall, sleeve joint, 26mm inner width, 28/32h · Hubs: Specialized Hi Lo disc, alloy, RCC bearing system, QR, 28h, Specialized Hi Lo disc, alloy, RCC bearing system, QR, 32h · Front tire: Specialized Ground Control, 60TPI, folding bead, 29x2.1", Specialized Fast Trak Control, 60TPI, 2Bliss Ready, folding bead, 29x2.0"
Archived: Headset: 1-1/8" sealed Cr-Mo cartridge bearings integrated w/ headset · Handlebar: Specialized flat, 6061 double butted alloy, 9-degree backsweep, 31.8mm · Stem: Specialized, 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware · Seatpost: Alloy, 2-bolt, 12.5mm offset, 30.9mm, anti-corrosion hardware · Saddle: Body Geometry Women's Riva Comp, hollow Cr-Mo rails, 155mm · Pedals: Composite platform, w/ reflectors, 9/16"
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.