
Cane Creek Thudbuster ST Seatpost Black, 30.9mm
30.9mm
Velopedia Bicycle Archive
Original specifications: geometry for 3 published sizes.
Selling this bike? Create a shareable bike record
At a glance
| Frame Construction | E5 Aluminum, bottom bracket motor mount, fully integrated &lockable downtube battery, internal cable routing, lock and front rack mount, sliding dropout |
|---|---|
| Frame Material | Aluminum |
| Fork | Rockshox Recon Silver RL, 80mm travel, Motion-Control, fender-mounts |
| Rear Derailleur | Enviolo Netherlands, Automatic HUB Interface,AHI-Pro-44T-OE-1, Enviolo,17Nm, 44T Spline Compatible Enviolo,17Nm, 44T Spline Compatible |
|---|---|
| Crankset | Custom alloy forged crankarms |
| Cassette | Gates Carbon Drive CDX 22t sprocket, silver |
| Chain | Gates Carbon Drive CDX 122t belt, black |
| Pedals | Specialized Commuter w/ grip tape & reflectors |
| Brakes | (F) Shimano, CUES, BL-U8000, Br-U8020, Sm-Ma-F180P/P2 / (R) Shimano, CUES,BL-U8000, Br-U8020 |
|---|
| Handlebar | Specialized Como handlebar/stem combo |
|---|---|
| Stem | Specialized integrated stem |
| Saddle | Body Geometry Comfort Gel, 200mm w/ SWAT™ Mount |
| Seatpost | Cane Creek, Thudbuster St 30.9 mm |
| Hubs | (F) Specialized alloy front hub disc, sealed cardridge bearings, 6-bolt, 15x110mm thru-axle, 32h / (R) enviolo Trekking, 380% range, 6-bolt, 10x135mm, 32h |
|---|---|
| Rims | 650b disc, double-wall alloy, pinned, 32h |
| Spokes | DT Swiss Industry |
| Front Tire | Hemisphere Flat Protection Reflect, 650b X 2.3 |
| Rear Tire | Hemisphere Flat Protection Reflect, 650b X 2.3 |
| Motor | Specialized 2.2, 90Nm torque, custom tuned motor, 250W nominal |
|---|---|
| Battery | Specialized U2-710, alloy casing, state of charge display, 710Wh |
| Display/Remote | MasterMind TCD, w/handlebar remote, built-in anti-theft feature, Bluetooth® connectivity, customizable display pages |
| Charger | Custom charger, 42V4A w/ Rosenberger plug, 100-240V |
Frame measurements by size.
Published frame view
Select an available measurement to locate it on the frame.
| Measurement | S | M | L |
|---|---|---|---|
| Seat tube | 450 mm | 450 mm | 460 mm |
| Head tube | 150 mm | 170 mm | 180 mm |
| Head-tube angle | 67° | 67.5° | 68° |
| Chainstay / rear center | 470.4 mm | 470.4 mm | 470.4 mm |
| Wheelbase | 1194 mm | 1221 mm | 1241 mm |
| Bottom-bracket drop | 80 mm | 80 mm | 80 mm |
| Bottom-bracket height | 275 mm | 275 mm | 275 mm |
| Reach | 441 mm | 465 mm | 486 mm |
| Stack | 650 mm | 671 mm | 682 mm |
| Standover height | 355 mm | 355 mm | 355 mm |
| Fork offset / rake | 44 mm | 44 mm | 44 mm |
| Front center | 735 mm | 762 mm | 781 mm |
| Trail | 103 mm | 99 mm | 96 mm |
| Fork length / axle-to-crown | 487 mm | 487 mm | 487 mm |
| Crank length | 165 mm | 165 mm | 165 mm |
| Handlebar width | 680 mm | 680 mm | 680 mm |
Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.
Parts & serviceability

30.9mm
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: 2025 Specialized Turbo Como 5.0 IGH · Electric-assist · Published sizes: S, M, L
Archived: Frame: E5 Aluminum, bottom bracket motor mount, fully integrated &lockable downtube battery, internal cable routing, lock and front rack mount, sliding dropout · Fork: Rockshox Recon Silver RL, 80mm travel, Motion-Control, fender-mounts
Archived: Fork: Rockshox Recon Silver RL, 80mm travel, Motion-Control, fender-mounts
Archived: Rear derailleur: ENVIOLO NETHERLANDS, AUTOMATIC HUB INTERFACE,AHI-PRO-44T-OE-1, ENVIOLO,17NM, 44T SPLINE COMPATIBLE ENVIOLO,17NM, 44T SPLINE COMPATIBLE · Crankset: Custom alloy forged crankarms · Cassette: Gates Carbon Drive CDX 22t sprocket, silver · Chain: Gates Carbon Drive CDX 122t belt, black
Archived: Brakes: (F) Shimano, CUES, BL-U8000, Br-U8020, Sm-Ma-F180P/P2 / (R) Shimano, CUES,BL-U8000, Br-U8020
Archived: Rims: 650b disc, double-wall alloy, pinned, 32h · Hubs: (F) Specialized alloy front hub disc, sealed cardridge bearings, 6-bolt, 15x110mm thru-axle, 32h / (R) enviolo Trekking, 380% range, 6-bolt, 10x135mm, 32h · Front tire: Hemisphere Flat Protection Reflect, 650b X 2.3 · Rear tire: Hemisphere Flat Protection Reflect, 650b X 2.3
Archived: Handlebar: Specialized Como handlebar/stem combo · Stem: Specialized integrated stem · Seatpost: Cane Creek, Thudbuster St 30.9 mm · Saddle: Body Geometry Comfort Gel, 200mm w/ SWAT™ Mount · Pedals: Specialized Commuter w/ grip tape & reflectors
Archived: Motor: Specialized 2.2, 90Nm torque, custom tuned motor, 250W nominal · Battery: Specialized U2-710, alloy casing, state of charge display, 710Wh · Display: MasterMind TCD, w/handlebar remote, built-in anti-theft feature, Bluetooth® connectivity, customizable display pages · Charger: Custom charger, 42V4A w/ Rosenberger plug, 100-240V
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.