
ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: SRAM X9 · 10-speed · mechanical rear derailleur · 27.5 wheels.
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At a glance
| Frame Construction | M5 aluminum, 650b geometry, tapered headtube, PF30 BB, ISCG '05 mount, internal Command Post IR routing, 142mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 165mm travel |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Pike RC 650b, Solo Air spring, tapered alloy steerer, w/ compression, rebound adj., 15mm thru-axle, 160mm travel |
| Fork Material | Suspension |
| Rear Shock | Custom FOX Float CTD Evolution w/ AUTOSAG, Climb, Trail, Descend settings and rebound adj., 216x57mm |
| Component Group | SRAM mix |
|---|---|
| Shifters | SRAM X7, 10-speed, w/ Matchmaker clamp |
| Front Derailleur | None |
| Rear Derailleur | SRAM X9 Type 2, 10-speed, mid cage |
| Crankset | SRAM X1 1000, PF30, X-Sync ring, 94mm BCD spider |
| Bottom Bracket | SRAM, PF30, OS press-in bearings, sealed cartridge |
| Rear Cogs | SRAM PG-1030, 10-speed, 11-36 |
| Chain | SRAM PC-1031, 10-speed, w/ PowerLink, nickel finish |
| Pedals | Resin test ride, w/ toe clips, CEN std. |
| Brakes | Shimano Deore BR-M615, hydraulic disc, metallic pads, 160mm rotor, Shimano Deore BR-M615, hydraulic disc, Ice Tech pads |
|---|
| Headset | 1-1/8" upper, 1-1/2" lower, threadless, Campy style, cartridge bearings |
|---|---|
| Handlebar | Specialized All-Mountain, low rise, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 31.8mm |
| Stem | Specialized XC, 3D forged alloy, 4-bolt, 6-degree rise |
| Saddle | Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm |
| Seatpost | Specialized, alloy, single bolt, 30.9mm |
| Hubs | Specialized Hi Lo disc, sealed cartridge bearings, 15mm thru-axle, 24h, Specialized Hi Lo disc, 4 sealed cartridge bearings, 12mm thru-axle, 28h |
|---|---|
| Rims | Roval Fattie 650b, alloy disc, 29mm inner width, 24/28h |
| Spokes | DT Swiss Industry, stainless |
| Front Tire | Specialized Butcher Control, 60TPI, 2Bliss Ready, folding bead, 650bx2.3", Specialized Slaughter Control, 60TPI, 2Bliss Ready, folding bead, 650bx2.3" |
| Wheel Size | 27.5 |
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 Enduro Comp 650B · Mountain Dual Suspension · Published sizes: S, M, L
Archived: Frame: M5 aluminum, 650b geometry, tapered headtube, PF30 BB, ISCG '05 mount, internal Command Post IR routing, 142mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 165mm travel · Fork: RockShox Pike RC 650b, Solo Air spring, tapered alloy steerer, w/ compression, rebound adj., 15mm thru-axle, 160mm travel · Suspension
Archived: Fork: RockShox Pike RC 650b, Solo Air spring, tapered alloy steerer, w/ compression, rebound adj., 15mm thru-axle, 160mm travel · Rear shock: Custom FOX Float CTD Evolution w/ AUTOSAG, Climb, Trail, Descend settings and rebound adj., 216x57mm
Archived: Group: SRAM mix · Shifters: SRAM X7, 10-speed, w/ Matchmaker clamp · Rear derailleur: SRAM X9 Type 2, 10-speed, mid cage · Crankset: SRAM X1 1000, PF30, X-Sync ring, 94mm BCD spider · Bottom bracket: SRAM, PF30, OS press-in bearings, sealed cartridge · Rear cogs: SRAM PG-1030, 10-speed, 11-36 · Chain: SRAM PC-1031, 10-speed, w/ PowerLink, nickel finish
Archived: Brakes: Shimano Deore BR-M615, hydraulic disc, metallic pads, 160mm rotor, Shimano Deore BR-M615, hydraulic disc, Ice Tech pads
Archived: Wheel size: 27.5 · Rims: Roval Fattie 650b, alloy disc, 29mm inner width, 24/28h · Hubs: Specialized Hi Lo disc, sealed cartridge bearings, 15mm thru-axle, 24h, Specialized Hi Lo disc, 4 sealed cartridge bearings, 12mm thru-axle, 28h · Front tire: Specialized Butcher Control, 60TPI, 2Bliss Ready, folding bead, 650bx2.3", Specialized Slaughter Control, 60TPI, 2Bliss Ready, folding bead, 650bx2.3"
Archived: Headset: 1-1/8" upper, 1-1/2" lower, threadless, Campy style, cartridge bearings · Handlebar: Specialized All-Mountain, low rise, 7050 alloy, 8-degree backsweep, 6-degree upsweep, 31.8mm · Stem: Specialized XC, 3D forged alloy, 4-bolt, 6-degree rise · Seatpost: Specialized, alloy, single bolt, 30.9mm · Saddle: Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm · 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.