SP5+

  • ELECTRIC
  • FITNESS
  • MID-DRIVE MOTOR

Fitness-focused electric bike loved by commuters and fitness riders alike.

$1,899 Free Shipping in the Contiguous U.S. Free shipping applies to delivery addresses within the contiguous 48 U.S. states only. Alaska, Hawaii, Puerto Rico, Guam, and other U.S. territories are excluded. Additional shipping charges may apply to excluded locations.

Free shipping applies to delivery addresses within the contiguous 48 U.S. states only. Alaska, Hawaii, Puerto Rico, Guam, and other U.S. territories are excluded. Additional shipping charges may apply to excluded locations.
  • "The motor itself is very quiet... on normal cruising, it's nearly silent." - BikeRumor
  • Lightweight build at ~37 lbs for convenient commutes
  • Mid-Drive Motor (85Nm peak)
  • 339Wh battery + up to 43 mile commuting range
  • UL Tested + Find My + Integrated Display

or as low as $150/mo with

HSA/FSA eligible for qualified customers

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What's my size?

Find out in 3 steps

Select size See bicycle geometry

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For the best experience, the electric models are currently only available through our authorized dealers for professional assembly, setup, and ongoing service. Find A Dealer

Delivery within 14 days

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Size Chart

SP5+

Frame Size Rider Height
S 150 cm – 163 cm 4' 11" - 5' 4"
M 163 cm – 173 cm 5' 4" - 5' 8"
L 173 cm – 190 cm 5' 8" - 6' 3"
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Sizing Guide

Sizing Guide

When purchasing a new bicycle, choosing the right size can do wonders for your ride experience. Use this sizing guide as a reference. If you’re in between two sizes, you can size up or down depending on your riding preference.

For the best results, we’d recommend visiting one of the many bike shops in our network to be fitted properly by a professional.

Your Measurements

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Size Recommendation

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Your measurements: —

Best size for you: —

Based on your measurements, your recommended size is —. However, to ensure your comfort, safety, and the best riding experience, we recommend visiting an authorized X-LAB dealer to test ride both sizes before making your final decision.

Let’s Find Your Best Fit

Your measurements appear to fall outside our current size range for this bike. For your comfort, safety, and best riding experience, we recommend speaking with an authorized X-LAB dealer or contacting our support team before choosing a size.

SP5+

$1,899 Nimbus -

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X-LAB SP5+

The SP5+ is built to make electric cycling simple, smooth, and accessible.

Its lightweight frame and intuitive electric assist provide effortless acceleration and reliable range, helping riders cover longer distances with ease.

Balanced geometry and durable construction ensure stability and comfort whether you're commuting, exploring your neighborhood, or enjoying weekend rides.

The SP5+ proves that electric mobility can be both practical and fun, with an element of fitness built in.

Everything You Need Right Up Front

An integrated cockpit and clear dashboard makes riding intuitive with assist modes, range, and ride essentials all in one clean interface designed for effortless daily use.

Lightweight and Versatile Electric Mobility

A sleeker alloy frame and a complete build under 37 lbs makes the SP5+ feel quick, agile, and more like a fitness bike, just with an extra reassuring push whenever you want it.

Mid-Drive Integration the Branta Way

With an in-house mid-drive system supported by Branta platform integration, the SP5+ is built to keep the bike clean, capable, and easy to maintain ride after ride.

Fitness-First Electric, Smarter by Design

With Find My and app-powered controls, SP5+ brings modern e-bike intelligence to a lightweight, sporty platform – unlocking personalization, firmware updates, and ride tracking without adding difficulties.

The Branta Advantage is Exclusive to X-LAB

The Branta Advantage is Exclusive to X-LAB

See Our In-House Components

Highlights SP5+

  • Key Features

    Class 2 throttle + Apple Find My anti-theft technology

    Shimano CUES 9-speed drivetrain

    Integrated rear taillight + brake light

    Sport setup: 700c gravel all-terrain tires and fitness riding position

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    Class 2 throttle + Apple Find My anti-theft technology

    Shimano CUES 9-speed drivetrain

    Integrated rear taillight + brake light

    Sport setup: 700c gravel all-terrain tires and fitness riding position

  • Technical Specifications

    FRAME

    XDS X6 Alloy Frame, UDH Compatible

    FORK

    XDS Carbon Fork, 100x12mm Thru-axle

    HANDLEBAR / STEM

    Branta Alloy Integrated, w/ Display & Front Light, 680mm

    Width, 90mm Length, 6 Degree Rise, 9 Degree Backsweep

    SEATPOST

    XDS Alloy Seatpost, Aero Shape, 350mm Length

    REAR DERAILLEUR

    Shimano Cues RD-U4000, 9-Speed

    SHIFTER

    Shimano Cues 9-Speed

    BRAKES

    Branta EC215D Hydraulic E-Bike Brake, w/ Cutoff Switch,

    3 Finger Lever, 2 Piston Caliper

    CASSETTE

    Shimano CS-LG300 11-46T, 9-Speed

    CRANKSET

    Branta Alloy Crankset, 46T, Narrow-wide Teeth

    MOTOR

    XDS Mid-drive X800 Motor, 250 Watt Continuous Rated Power, 400 Watt Peak Power, 85Nm Peak Torque, Dual-sided Torque Sensor

    BATTERY

    XDS Rechargeable Li-ion Battery, 339Wh, LG Battery Cells, 3A Charger (0-100% 3hr 15min)

    LIGHTS

    Integrated F+R Lights (+ Brake Lights)

    SPEED

    Pedal-assist and Throttle, Class 2 20mph (Unlock to Class 3 via the X-Lab Bikes Mobile App)

    RANGE

    Ride up to 43 miles on a Single Charge

    TESTING AND COMPLIANCE

    UL2271 and UL2849 Certified, Ingress Ratings: Complete Bike IP54, Battery IPX7, Motor and Other Electronics IPX6

    LOAD CAPACITY

    Max Load 265 lbs (120 kg)

    CONNECTIVITY

    Apple Find My Anti-Theft Technology, Bluetooth, OTA Updates

    ROTORS

    Branta Z8, F:160mm R:160mm

    CHAIN

    KMC E-GLIDE-S

    WHEELSET

    Branta Alloy E-Bike Wheelset

    TIRES

    Branta R240, 700x40C, 30TPI

    Max Tire Clearance: 45C w/ Full-Wrapped Fender

    SADDLE

    Branta SRX+

    PHONE HOLDER

    Quad Lock Mount

    WEIGHT

    16.79 kg / 37.01 lbs (Size L)

    SIZE OPTIONS

    S / M / L

    *Continuous Product Improvement

    Innovation never stands still. As part of our commitment to building the best possible bicycles, X-LAB reserves the right to update specifications, components, colors, and other product details at any time without notice. We make every effort to keep our published specifications current, but minor variations may occur between production batches. Please contact your local X-LAB dealer or Customer Support if you would like to confirm the latest specifications before purchase.

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    Geometry & Dimensions

    Basic geometry
    title S M L
    A — Seat Tube Length 406mm 457mm 508mm
    B — Top Tube Length 541mm 580mm 609mm
    C — Head Tube Length 171mm 171mm 197mm
    D — Seat Tube Angle 75° 74° 74°
    E — Head Tube Angle 69° 71° 72°
    F — Chainstay 445mm 445mm 445mm
    G — Wheelbase 1080mm 1081mm 1100mm
    H — Bottom Bracket Drop 71mm 65mm 65mm
    I — Stack 565mm 594mm 621mm
    J — Reach 385mm 410mm 425mm
    K — Front Center 644mm 645mm 663mm
    O — Stand-over 774mm 787mm 823mm
    • A — Seat Tube Length 406mm
      B — Top Tube Length 541mm
      C — Head Tube Length 171mm
      D — Seat Tube Angle 75°
      E — Head Tube Angle 69°
      F — Chainstay 445mm
      G — Wheelbase 1080mm
      H — Bottom Bracket Drop 71mm
      I — Stack 565mm
      J — Reach 385mm
      K — Front Center 644mm
      O — Stand-over 774mm
    • A — Seat Tube Length 457mm
      B — Top Tube Length 580mm
      C — Head Tube Length 171mm
      D — Seat Tube Angle 74°
      E — Head Tube Angle 71°
      F — Chainstay 445mm
      G — Wheelbase 1081mm
      H — Bottom Bracket Drop 65mm
      I — Stack 594mm
      J — Reach 410mm
      K — Front Center 645mm
      O — Stand-over 787mm
    • A — Seat Tube Length 508mm
      B — Top Tube Length 609mm
      C — Head Tube Length 197mm
      D — Seat Tube Angle 74°
      E — Head Tube Angle 72°
      F — Chainstay 445mm
      G — Wheelbase 1100mm
      H — Bottom Bracket Drop 65mm
      I — Stack 621mm
      J — Reach 425mm
      K — Front Center 663mm
      O — Stand-over 823mm
    Component geometry
    title S M L
    Fork Rake/Offset 46mm 46mm 46mm
    Trail 90mm 74mm 70mm
    Stem 90mm 90mm 90mm
    • Fork Rake/Offset 46mm
      Trail 90mm
      Stem 90mm
    • Fork Rake/Offset 46mm
      Trail 74mm
      Stem 90mm
    • Fork Rake/Offset 46mm
      Trail 70mm
      Stem 90mm
  • Manual Downloads

  • Unboxing & Assembling

    SP5+ Unboxing and Assembly
    SP5+ Unboxing and Assembly
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