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Specialized Turbo Como 4.0 and Como 4.0 IGH (Gen 2): parts and specs

Replacement parts and specs for the second-generation Specialized Turbo Como 4.0 and 4.0 IGH: 650B x 2.3 tires, SRAM Level brakes with 180 mm rotors, 11-speed SRAM NX or Gates belt with enviolo hub, U2-710 battery and 42V 4A charger.

Last edited Nov 9, 2026 by Pedalwise team Edit History Add a subpage

The Pedalwise team started this page from official manuals, support pages and repair videos. Fixed this yourself, or spotted something wrong? Help improve it.

Specs are for the stock bike as sold; check your own bike before you buy.

This page covers the second-generation Specialized Turbo Como 4.0 (derailleur) and Turbo Como 4.0 IGH (belt drive), sold from 2022. Both run the Specialized 2.0 mid-drive motor (70 Nm, 250 W nominal); see Brose and Specialized motors explained. The front wheel uses a 15 x 110 mm thru-axle. The rear is a 12 x 148 mm thru-axle on the 4.0 and a 10 x 135 mm axle on the 4.0 IGH. The U2 battery fits every second-generation Como; on the 3.0 and 5.0 trims, check the other parts on your bike before you order.

Photo needed: The Turbo Como 4.0 IGH from the drive side, showing the belt and internal gear hub.. Add one

Electrical parts on this list must match this exact model and are fitted at the external plugs or by a pro. Never open the battery, controller, motor or display. Motor and battery service on this bike is dealer work: a Specialized dealer reads faults and updates firmware with its diagnostic tool.

Parts list

  • Tire: 650B x 2.3, front and rear. The 4.0 uses the Pathfinder Sport Reflect and the 4.0 IGH the Hemisphere Flat Protection Reflect; each sells for $45 in this size, read Nov 9, 2026.
  • Inner tube: standard 650B x 1.75 to 2.4 tube with a 40 mm SV valve.
  • Brake rotor: 180 mm, front and rear.
  • Disc brake caliper: SRAM Level, 2-piston hydraulic, front and rear.
  • Chain: 4.0: KMC e11S, 11-speed, with Missing Link. 4.0 IGH: Gates Carbon Drive CDX belt, 122t, in place of a chain.
  • Cassette: 4.0: SRAM PG-1130, 11-speed, 11 to 42t, with SRAM NX derailleur and shifter. 4.0 IGH: enviolo CVP Multi-Turn internal gear hub with a Gates CDX 22t rear sprocket.
  • E-bike display: MasterMind TCD with handlebar remote, Bluetooth and a built-in anti-theft feature.
  • E-bike charger: custom 42V 4A charger with a Rosenberger plug, 100 to 240V input. The Turbo Battery Charger is the matching 42V 4A Rosenberger charger, $199.99 and shown unavailable online, read Nov 9, 2026.
  • E-bike battery: Specialized U2-710, 710Wh, with a state of charge display. The Specialized U2 Battery fits every second-generation Turbo Como; $1,199.99 and out of stock online, read Nov 9, 2026.
  • E-bike lights: 4.0: Lezyne Ebike Hecto E65 headlight (210 lumen) and Spanninga Commuter Glow XE taillight. 4.0 IGH: Lezyne Ebike Hecto STVZO E350+ (350 lumen) and Spanninga Commuter Glow with brake light.
  • Grips: Specialized Body Geometry Contour, lock-on.
  • Pedals: Specialized Commuter with grip tape and reflectors.
  • Saddle: Body Geometry Comfort Gel, 200 mm, with SWAT mount, on a 30.9 mm spring suspension seatpost with 40 mm travel.

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