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Versatile electric bike for commuting, convenience, and everyday riding.
$1,999In-Store Assembly Required
or as low as $150/mo with
HSA/FSA eligible for qualified customers
Payment methods:
ST5+ LS
| Frame Size | Rider Height | |
|---|---|---|
| M | 157 cm – 173 cm | 5' 2" - 5' 8" |
| L | 173 cm – 188 cm | 5' 8" - 6' 2" |
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.
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Based on your measurements, we recommend this frame size.
Best size for you: —
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.
ST5+ LS
$1,999 Aether Sky Blue -
You have great taste – this bike sold out fast! If you want first dibs, drop your email and we’ll let you know as soon as it’s back in stock.
A fully integrated cockpit with an accessible color dashboard puts speed, range, assist mode, and ride data right where you need it – simple to read, effortless to use, and built for everyday reliability and adjustments.
A durable alloy frame and a complete build around 54 lbs delivers stability and confidence that prepares the rider for commutes, errands, and long rides with real utility in mind.
A mid-drive system tuned as a complete platform with torque where it counts, smarter control, and an integrated Branta ecosystem designed for a better ride feel and easier long-term performance.
ST5+ LS doesn’t stop at hardware: with Find My and the X-LAB Bikes app, you get security, ride customization, diagnostics, and over-the-air updates, so your bike stays current, protected, and ready for every day.
*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.
product geometry anchor
| title | M | L |
|---|---|---|
| Seatpost | 300mm | 300mm |
| Seatpost | 300mm |
| Seatpost | 300mm |
Explore answers to frequently asked questions before getting in touch.
View FAQsFrom first setup to long-term service, X-LAB is designed to keep you riding with confidence.
Get support through 200+ (and rapidly growing) X-LAB local bike shops for maintenance, service, fit guidance, and post-purchase care. Service parts are stocked and shipped from our California warehouse.
Ride with long-term confidence. X-LAB frames and Branta carbon-rim wheels are backed by lifetime warranty coverage.
Every bike comes with essential accessories, including torque wrench, taillight, and pump—so you can get rolling right away.
