
ENVE Twin Bolt Seatpost - Zero Offset UD Carbon, 30.9x400mm
30.9x400mm
Replacement option · verify fit
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Original specifications: geometry for 4 published sizes.
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At a glance
| Frame Construction | M5 alloy, Trail Geometry, threaded BB, internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Sektor Silver RL 27.5, Solo Air, lockout and rebound adjust, 15x110mm Maxle Lite thru-axle, 46mm offset, 130mm travel |
| Rear Shock | Custom X-Fusion 02 Pro RL, air sleeve, rebound adjust, lockout, 205x53mm |
| Shifters | SRAM GX, 10-speed, trigger |
|---|---|
| Rear Derailleur | SRAM GX, Type 2.1, long cage, 10-speed |
| Crankset | SRAM NX, alloy, 24mm spindle, 52mm chainline, direct mount chainring |
| Bottom Bracket | Truvativ Powerspline, 73x113mm |
| Cassette | Sunrace, 10-speed, 11-42t |
| Chain | KMC X10, 10-speed w/reusable MissingLink |
| Brakes | (F) Tektro Gemini Comp, hydraulic disc, resin pad, 180/200mm rotor / (R) Tektro Gemini Comp, hydraulic disc, resin pad, 180/160mm rotor |
|---|
| Handlebar | Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 750mm width |
|---|---|
| Stem | Specialized, 3D forged alloy, 4-bolt, 7-degree rise |
| Saddle | Body Geometry Henge Sport, steel rails, 143mm |
| Seatpost | Alloy, 2-bolt clamp, 12.5mm offset, 30.9mm, anti-corrosion hardware |
| Hubs | (F) Specialized disc, alloy, sealed cartridge bearings,15x110mm thru-axle, 32h / (R) Specialized disc, alloy, sealed cartridge bearings, 12x148mm thru-axle, 32h |
|---|---|
| Rims | Specialized 650b, alloy, 27mm inner width, 32h |
| Spokes | Stainless, 14g |
| Front Tire | Purgatory, Control casing, 650bx2.3"", 60TPI, Aramid folding bead, 2Bliss Ready |
| Rear Tire | Ground Control, Control casing, 650bx2.3"", 60TPI, Aramid folding bead, 2Bliss Ready |
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 396 mm | 430 mm | 468 mm | 523 mm |
| Effective top tube | 554 mm | 583 mm | 614 mm | 638 mm |
| Head tube | 95 mm | 105 mm | 115 mm | 125 mm |
| Head-tube angle | 68° | 68° | 68° | 68° |
| Seat-tube angle | 75° | 75° | 75° | 75° |
| Chainstay / rear center | 420 mm | 420 mm | 420 mm | 420 mm |
| Wheelbase | 1089 mm | 1119 mm | 1151 mm | 1176 mm |
| Bottom-bracket drop | 23 mm | 23 mm | 23 mm | 23 mm |
| Reach | 399 mm | 425 mm | 454 mm | 475 mm |
| Stack | 580 mm | 590 mm | 599 mm | 608 mm |
| Fork offset / rake | 42 mm | 42 mm | 42 mm | 42 mm |
| Front center | 670 mm | 700 mm | 732 mm | 757 mm |
| Trail | 97 mm | 97 mm | 97 mm | 97 mm |
| Fork length / axle-to-crown | 522 mm | 522 mm | 522 mm | 522 mm |
| Seatpost length | 350 mm | 400 mm | 400 mm | 400 mm |
| Crank length | 170 mm | 175 mm | 175 mm | 175 mm |
| Stem length | 60 mm | 60 mm | 70 mm | 90 mm |
| Handlebar width | 750 mm | 750 mm | 750 mm | 750 mm |
Dimensions as recorded.
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: 2017 Specialized Camber 650b · Mountain · Published sizes: S, M, L, XL
Archived: Frame: M5 alloy, Trail Geometry, threaded BB, internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel · Fork: RockShox Sektor Silver RL 27.5, Solo Air, lockout and rebound adjust, 15x110mm Maxle Lite thru-axle, 46mm offset, 130mm travel
Archived: Fork: RockShox Sektor Silver RL 27.5, Solo Air, lockout and rebound adjust, 15x110mm Maxle Lite thru-axle, 46mm offset, 130mm travel · Rear shock: Custom X-Fusion 02 Pro RL, air sleeve, rebound adjust, lockout, 205x53mm
Archived: Shifters: SRAM GX, 10-speed, trigger · Rear derailleur: SRAM GX, Type 2.1, long cage, 10-speed · Crankset: SRAM NX, alloy, 24mm spindle, 52mm chainline, direct mount chainring · Bottom bracket: Truvativ Powerspline, 73x113mm · Cassette: Sunrace, 10-speed, 11-42t · Chain: KMC X10, 10-speed w/reusable MissingLink
Archived: Brakes: (F) Tektro Gemini Comp, hydraulic disc, resin pad, 180/200mm rotor / (R) Tektro Gemini Comp, hydraulic disc, resin pad, 180/160mm rotor
Archived: Rims: Specialized 650b, alloy, 27mm inner width, 32h · Hubs: (F) Specialized disc, alloy, sealed cartridge bearings,15x110mm thru-axle, 32h / (R) Specialized disc, alloy, sealed cartridge bearings, 12x148mm thru-axle, 32h · Front tire: Purgatory, Control casing, 650bx2.3"", 60TPI, Aramid folding bead, 2Bliss Ready · Rear tire: Ground Control, Control casing, 650bx2.3"", 60TPI, Aramid folding bead, 2Bliss Ready
Archived: Handlebar: Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 750mm width · Stem: Specialized, 3D forged alloy, 4-bolt, 7-degree rise · Seatpost: Alloy, 2-bolt clamp, 12.5mm offset, 30.9mm, anti-corrosion hardware · Saddle: Body Geometry Henge Sport, steel rails, 143mm
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.