Zero SR/F rider silhouetted against a desert sunset

Case Study

Partner

Zero Motorcycles

Category

Electric Motorcycles

Engagement

2019 to 2020

Delivered

  • Companion app (iOS & Android)
  • Digital dashboard UI
  • Cypher III firmware integration

Slytrunk services

  • Product management
  • Design (interaction & visual)
  • Engineering
  • Project management

2019 · The starting point

Zero's next bike was smart by design. It didn't have software yet.

Zero Motorcycles started in a Santa Cruz garage more than a decade ago, building all-electric motorcycles that skip the genre's usual pitch. No deafening engine, no hyper-masculine styling — just instant power and zero emissions, sold on confidence instead of noise.

Their next bike, the SR/F, was built to prove the point further: cellular and Bluetooth wired straight into the hardware, pitched by Zero's own CEO as the world's first fully connected ‘Smart’ Motorcycle. The hardware was ready. The software that was supposed to make it ‘smart’ didn't exist yet — that's what Zero brought us in to build.

The harder problem

A phone app bolted onto that hardware would have been a downgrade.

Getting started meant walking the production line at Zero's Scotts Valley HQ, where every motorcycle is hand-assembled out of aircraft-grade aluminum to tolerances that leave no room for guessing. It was immediately clear this wasn't a standard software project.

The obvious build — a companion app with a status screen, a settings menu, some Bluetooth toggles — would have undersold everything happening on the production floor. Confidence like that isn't built on gimmicks, and a generic app would have been exactly that: a gimmick riding on top of real engineering.

Zero Motorcycles' Scotts Valley production floor, marked “Crafted in California”

The idea we brought

Build one ecosystem around Zero's own firmware, not two products that happen to share a name.

The fix wasn't a longer feature list — it was refusing to treat the app and the dash as separate deliverables. Both needed to run on Cypher III, Zero's own motorcycle firmware, so the phone in a rider's pocket and the 5-inch display on the handlebars would always agree with each other and with the bike.

That meant designing to each screen's own strengths instead of mirroring one on the other: the app carries everything that benefits from more space and more time — ride history, charge scheduling, sharing a ride afterward — while the dash stays legible at speed, in daylight, in one glance.

Point-of-view shot riding the Zero SR/F across a dry lakebed, dashboard HUD inset

What we built

One ecosystem, built around Zero's own firmware.

01 · Ride modes

Ride mode selection and creation

Ten custom ride modes, tuned for speed, torque, regen and braking, and saved to switch between mid-ride.

02 · Personalization

A dashboard that's actually yours

Riders assign gauges to each quadrant of the dash and pick a colour theme, right down to what shows up on a 5-inch display doing 80mph.

03 · Charging

Charging on the rider's schedule

Targeted charge levels, scheduled charge windows, live charge status and charge-station lookup, all set remotely from the app.

04 · Ride data

Every ride, captured

Speed, lean angle, power, torque, and energy regenerated — logged automatically and ready to replay.

05 · Replay

An industry first: relive the ride

Full playback of a ride's data overlaid on its route — not just a summary screen, the whole ride, second by second.

06 · Sharing

Built to be shared

Riders drop their stats onto a route map or a custom photo and share the ride, not just the number.


01/06

The other screen

The dash had to feel like the bike, not like a phone strapped to the handlebars.

The app wasn't the only interface launching with the SR/F. We designed a Bluetooth-connected digital dash that had to look forward-facing without losing the visceral, mechanical feel of an actual motorcycle instrument cluster.

Getting the balance right meant treating the dash and the app as complements, not copies — legible in a glance while riding, deep and configurable when parked. Four ride-mode colour themes carry over from the dash's 5-inch LCD to the app itself, so switching modes on the bike and checking them later on the phone always looks like the same product.

Close-up of the Zero SR/F's handlebar-mounted digital dashboard
Four ride-mode dashboard colour themes: Custom/Sport, Street, Rain, and Eco
Sport, Street, Rain and Eco modes, each with its own dashboard colour theme.

What shipped

The SR/F launched with an ecosystem, not an afterthought.

The companion app and digital dashboard launched alongside the SR/F in 2019 — ride modes, remote charge management, full ride-data replay, and a Bluetooth dash built to match, all running on Zero's own Cypher III firmware.

A motorcycle that sells on silence instead of noise needed software that didn't need gimmicks to prove it either. That's what shipped.

Zero SR/F performing a burnout at night

Contact

Got hardware good enough to make the software the hard part?


Next

More of where it gets built.