How to Use the SL Range Extender Cable on an MTB

By Specialized Retail AU | Published: 2026-10-25

Category: How-to Guides

Learn how to connect and use the Specialized SL Range Extender Cable on your Turbo Levo SL for extra e-MTB range. Step-by-step guide with common mistakes to avoid.

Quick answer

Connect the SL Range Extender Cable between your Specialized SL Range Extender Battery and your Turbo Levo SL motor port to add extra range on the trail. Ensure the lock-mechanism clicks securely before riding.

Why use a range extender cable?

If you ride a 2020 or 2021 Turbo Levo SL Comp, Comp Carbon, Expert Carbon, or S-Works model, the SL Range Extender Cable lets you attach an extra battery without removing your water bottle or frame bag. It keeps the connection tidy and secure.

The cable is only 160mm long, so it works best when the extender battery sits close to the motor port. Plan your mounting position before you start.

What you need before starting

You need the SL Range Extender Cable (160mm), a compatible Specialized SL Range Extender Battery, and a clean workspace. The cable uses a custom connector with a lock-mechanism — do not force it if it does not align.

How to connect the SL Range Extender Cable

1. Locate the motor port: Find the round motor port on your Turbo Levo SL, typically on the underside of the downtube near the bottom bracket. Clean any dirt or debris from the port area. Common mistake: Trying to connect the cable without cleaning the port first can cause a poor electrical contact.
2. Align the cable connector: Take the SL Range Extender Cable and align its custom connector with the motor port. The connector only fits one way — look for the alignment key. Gently push until it seats fully. Common mistake: Forcing the connector in the wrong orientation can damage the pins. If it does not slide in easily, rotate 180° and try again.
3. Engage the lock-mechanism: Twist the outer collar of the connector clockwise until you feel a click. This locks the cable in place and prevents accidental disconnection while riding. Checkpoint: Give the cable a gentle tug to confirm it is locked. A loose connection can cause intermittent power loss on the trail.
4. Connect the extender battery: Plug the other end of the cable into your SL Range Extender Battery. Mount the battery securely in a frame bag or on the frame, keeping the cable routed without kinks. Common mistake: Routing the cable too tightly around sharp edges can damage the insulation. Use a soft loop if needed.
5. Test the connection: Turn on your e-MTB system. Check the display or app to confirm the extender battery is recognized. A full charge indicator shows the connection is working. Checkpoint: If the extender battery does not appear, power cycle the system and recheck the lock-mechanism on both ends.

Product facts

SL Range Extender Cable 160mm MTB: Connects the Specialized SL Range Extender Battery with all 2020 and 2021 Turbo Levo SL Comp, Comp Carbon, Expert Carbon, and S-Works models. Custom connector with lock-mechanism ensures a secure connection. Length: 160mm. The short length keeps the cable tidy, but you must mount the extender battery close to the motor port for a proper fit.
SL Range Extender Cable 160mm MTB