For Cardo helmet speakers, choose the 40mm set for easy fit in most ear pockets; pick the 45mm JBL kit if you want fuller low‑end and louder headroom.
Cardo 40mm HD Speakers
Cardo 45mm Audio Kit (JBL)
Budget Route
- Keep install simple; works in shallow ear pockets.
- Clear for nav prompts and intercom chats.
- Pay less now; move up later if you want deeper bass.
Cardo 40mm HD Speakers
Bass & Volume Route
- Music‑first rides or touring with earplugs.
- Use deeper pockets or spacer pads for comfort.
- Unlock JBL sound profiles in the app.
Cardo 45mm Audio Kit (JBL)
Modular Upgrade Route
- Start with 40mm; check long‑ride comfort.
- Keep 40mm in a second helmet later.
- Move to 45mm when your fit allows.
Cardo 40mm → 45mm later
Helmet speakers change how you hear GPS cues, group calls, and your playlist at speed. Cardo sells two routes: a compact 40mm HD pair and a larger 45mm JBL kit with app‑tuned profiles. This guide gives you the quick verdict and the trade‑offs that push a buyer one way or the other.
In A Nutshell
The 40mm HD set is the easy fit and the friendly price. Most street lids with standard ear pockets accept it without fuss, and you still get clear voice and music for daily rides.
The 45mm JBL kit costs more but brings bigger drivers and software activation that lifts bass and volume. It shines on long highway days, especially if you wear earplugs or ride a noisy bike.
Side‑By‑Side Specs
Cardo 40mm HD Speakers — What We Like / What We Don’t Like
✅ What We Like
- Friendly price—$59.95 from Cardo’s U.S. store.
- Compact footprint that drops into most ear pockets without trimming pads.
- Clear speech and prompts that keep group chat and GPS directions easy to follow.
⚠️ What We Don’t Like
- Less low‑end punch than the larger kit during highway stretches.
- No extra JBL app profiles bundled with this standalone set.
- Music volume ceiling feels lower if you wear heavy earplugs at 70+ mph.
Cardo 45mm Audio Kit (JBL) — What We Like / What We Don’t Like
✅ What We Like
- Bigger drivers with richer bass and more headroom for highway listening.
- JBL activation unlocks tuned profiles in the Cardo app.
- Works across the Cardo range; includes pads and Velcro for a clean install.
⚠️ What We Don’t Like
- Higher price—$109.95 for the kit.
- Wider face can press the ear in shallow pockets; may need spacer pads.
- More tuning steps: activate profiles and dial in EQ before your first long ride.
40mm Or 45mm For Cardo: Which Fits You Better
Fit & Comfort
Start with your helmet’s ear recess. A lot of street lids carve pockets that match a 40mm disc. That size slides in fast and usually sits flush with the liner. If your ear pockets are tight or shallow, the 40mm pair keeps pressure off the pinna and makes donning easier.
The 45mm kit brings a larger diaphragm for music, but it needs space. If your recess is deep, you’re set. If it’s borderline, use the included pads to fine‑tune distance so the speaker sits close to the ear without rubbing. The goal is a firm but not painful touch; that gap is where clarity lives at speed.
ℹ️ Good To Know: Measure your pocket before you buy. If a 45mm disc won’t sit flat, the larger kit can feel crowded. When in doubt, mount the 40mm set, ride a week, then decide if you want more bass.
Ports & Connectivity
The 45mm kit connects with a standard 3.5mm plug and lists 64‑ohm impedance with 88 dB sensitivity at 1 kHz/1 mW—handy details if you care about headroom and matching. Cardo publishes those specs on its support page, along with activation tips for the kit’s QR card.
Software & Updates
The 45mm bundle includes “Sound by JBL” activation. Open the Cardo app, scan the QR in the box, and pick a profile that suits your ride. That software layer shapes bass and treble in a way your phone’s system EQ often can’t. The standalone 40mm HD set is a straight hardware swap with no extra profiles bundled in this SKU.
Pricing & Packages
The U.S. list price for the 40mm HD set is $59.95 on Cardo’s store. The 45mm Audio Kit with Sound by JBL lists at $109.95. If you want to check current promos or what’s in each box, go straight to Cardo’s pages: 40mm HD Speakers pricing and 45mm Audio Set pricing. Both are U.S. links.
Warranty & Service
Cardo units carry a published warranty by model line, and speaker accessories are sold on the same store where you’ll also find spare pads and mounting Velcro. If you rotate helmets, save extra pads in a small bag so you can repeat a good fit next season.
Price, Value & Ownership
Here’s the quick math on cost, setup, and long‑ride feel. Use it to match your helmet space and listening goals.
The 40mm set keeps cost and install time down. The 45mm kit adds software tuning and extra headroom that stands out on open highways.
Where Each One Wins
🏆 Bass & Loudness — Cardo 45mm Audio Kit (JBL)
🏆 Easiest Fit — Cardo 40mm HD Speakers
🏆 App Profiles — Cardo 45mm Audio Kit (JBL)
Decision Guide
✅ Choose Cardo 40mm HD Speakers If…
- Your helmet’s ear pockets are shallow and you want a no‑drama install.
- You ride mainly at city speeds or short freeway hops and value clear comms.
- You want to keep the budget light and still get a clean upgrade path later.
✅ Choose Cardo 45mm Audio Kit (JBL) If…
- You tour for hours, use earplugs, and want stronger bass with more volume.
- Your helmet has deeper pockets or you’re willing to tune placement with pads.
- You want app‑based JBL profiles to shape music and voice to your taste.
Best Fit For Most Riders
Most riders should start with the 40mm HD set. It fits quickly, works with a wide range of lids, and keeps voice and prompts crisp without budget pain. If you ride long highway days, love music, or wear heavy earplugs, the 45mm JBL kit moves the needle with bigger bass and higher headroom—just make sure your ear pockets can take the size.
Data sources: Cardo’s official product pages list U.S. prices for the 40mm HD Speakers and the 45mm Audio Set with Sound by JBL. The 45mm kit’s published specs—3.5mm plug, 64 Ω impedance, and 88 dB sensitivity at 1 kHz/1 mW—appear on Cardo’s support page for the 45mm Audio Set.