
ENVE Twin Bolt Seatpost - 25mm Offset UD Carbon, 27.2mm
27.2mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: Shimano XTR · 10-speed rear derailleur · 29 wheels.
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At a glance
| Frame Construction | FACT 9m carbon front triangle, M5 alloy rear triangle, FACT IS construction, tapered headtube, carbon PF30 BB, full internal cable routing, 142mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, SWAT EMT tool cradle, S: 90mm travel, M/L: 100mm |
|---|---|
| Frame Material | Carbon Fiber/Aluminum |
| Fork | RockShox SID World Cup 29 Brain, Solo Air spring, tapered alloy steerer, bottom-mount BrainFade, rebound adjust, 15mm thru-axle, S: 90mm travel, M/L: 100mm |
| Fork Material | Suspension |
| Rear Shock | FOX/Specialized remote Mini-Brain w/ AUTOSAG, inertia valve, BrainFade adjust, 200x48mm, 95mm travel |
| Component Group | Mountian mix |
|---|---|
| Shifters | Shimano SLX, 10-speed, trigger |
| Front Derailleur | SRAM X7, 2x10, high direct mount |
| Rear Derailleur | Shimano XTR Shadow Plus, 10-speed, GS mid cage |
| Crankset | Custom SRAM S-2200, carbon, PF30 spindle, 104/64mm BCD spider |
| Bottom Bracket | SRAM, PF30, OS press-in bearings, sealed cartridge |
| Rear Cogs | SRAM PG 1050, 10-speed, 11-36 |
| Chain | SRAM PC 1051, 10-speed, w/ PowerLink |
| Pedals | Resin test ride, w/ toe clips, CEN std. |
| Brakes | Magura MTS, hydraulic disc, Hi Friction pad, alloy master cylinder, alloy caliper, Storm SL rotor, Magura MTS, hydraulic disc, Hi Friction pad, alloy master cylinder, alloy caliper, Storm SL rotor |
|---|
| Headset | 1-1/8 and 1-1/2" threadless, Campy style upper with 1-1/2" lower, cartridge bearings |
|---|---|
| Handlebar | Specialized flat, 8-degree backsweep, 31.8mm |
| Stem | Specialized, forged alloy, 6-degree rise |
| Saddle | Body Geometry Women's Myth Comp, hollow Cr-Mo rails, 155mm |
| Seatpost | Specialized alloy, single bolt, 27.2mm |
| Hubs | Roval Control Carbon 29, 15mm thru-axle, 32h, Roval Control Carbon 29 142+, DT Swiss Star Ratchet, 12mm thru-axle, 32h |
|---|---|
| Rims | Roval Control Carbon 29, carbon disc, hookless bead, 22mm internal width, 32h |
| Spokes | DT Swiss Revolution |
| Front Tire | S-Works Fast Trak Control, 120TPI, 2Bliss Ready, folding bead, 29x2.2", Specialized Fast Trak Control, 60TPI, 2Bliss Ready, folding bead, 29x2.0" |
| Wheel Size | 29 |
Parts & serviceability

27.2mm
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 Era Expert Carbon 29 · Mountain Dual Suspension · Published sizes: S, M, L
Archived: Frame: Carbon Fiber/Aluminum · Fork: RockShox SID World Cup 29 Brain, Solo Air spring, tapered alloy steerer, bottom-mount BrainFade, rebound adjust, 15mm thru-axle, S: 90mm travel, M/L: 100mm · Suspension
Archived: Fork: RockShox SID World Cup 29 Brain, Solo Air spring, tapered alloy steerer, bottom-mount BrainFade, rebound adjust, 15mm thru-axle, S: 90mm travel, M/L: 100mm · Rear shock: FOX/Specialized remote Mini-Brain w/ AUTOSAG, inertia valve, BrainFade adjust, 200x48mm, 95mm travel
Archived: Group: Mountian mix · Shifters: Shimano SLX, 10-speed, trigger · Front derailleur: SRAM X7, 2x10, high direct mount · Rear derailleur: Shimano XTR Shadow Plus, 10-speed, GS mid cage · Crankset: Custom SRAM S-2200, carbon, PF30 spindle, 104/64mm BCD spider · Bottom bracket: SRAM, PF30, OS press-in bearings, sealed cartridge · Rear cogs: SRAM PG 1050, 10-speed, 11-36 · Chain: SRAM PC 1051, 10-speed, w/ PowerLink
Archived: Brakes: Magura MTS, hydraulic disc, Hi Friction pad, alloy master cylinder, alloy caliper, Storm SL rotor, Magura MTS, hydraulic disc, Hi Friction pad, alloy master cylinder, alloy caliper, Storm SL rotor
Archived: Wheel size: 29 · Rims: Roval Control Carbon 29, carbon disc, hookless bead, 22mm internal width, 32h · Hubs: Roval Control Carbon 29, 15mm thru-axle, 32h, Roval Control Carbon 29 142+, DT Swiss Star Ratchet, 12mm thru-axle, 32h · Front tire: S-Works Fast Trak Control, 120TPI, 2Bliss Ready, folding bead, 29x2.2", Specialized Fast Trak Control, 60TPI, 2Bliss Ready, folding bead, 29x2.0"
Archived: Headset: 1-1/8 and 1-1/2" threadless, Campy style upper with 1-1/2" lower, cartridge bearings · Handlebar: Specialized flat, 8-degree backsweep, 31.8mm · Stem: Specialized, forged alloy, 6-degree rise · Seatpost: Specialized alloy, single bolt, 27.2mm · Saddle: Body Geometry Women's Myth Comp, hollow Cr-Mo rails, 155mm · Pedals: Resin test ride, w/ toe clips, CEN std.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.