Kepler Dual Battery PPB
A long-range fat-tire cruiser with two batteries and one of the cleanest frames in the class — not a single visible weld. 52V, 85–105 miles of range, a memory-foam saddle, and torque+cadence sensing, uncorked to 35+ mph on private property.
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Every Angle
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In The Details
Up Close
On The Road
Riding Shots
The Engineering
Built On Better Technology
52V 35Ah Dual Battery
20Ah + 15Ah · 1,820Wh
Two Packs, 85–105 Miles
A 20Ah pack and a 15Ah pack combine for 52V and 1,820Wh — a claimed 85–105 miles, one of the longest ranges in the fat-tire class. The screen shows both packs at once.
Charge Both At Once
Two 52V 3A chargers ship in the box, so you top up both batteries together and get back out.
110 Nm Rear Hub
The dual-battery PPB runs a 1,000W-rated hub (1,600W peak) making 110 Nm, uncorked to 35+ mph on private property.
Weld-Free Hydroformed Frame
24″ fat · two-tone paint
Not A Single Visible Weld
The hydroformed aluminum frame is so clean there isn't a visible weld on it — a two-tone paint job with the color band through the middle. It genuinely looks like nothing else in the class.
24-Inch Fat Tires
Where most bikes here roll on 26 × 4, the Kepler drops to 24 × 4.0 puncture-resistant fat tires to lower the whole bike and keep it stable at stops.
Comfort Built In
A memory-foam saddle on a suspension seatpost and a double-crown fork soak up the bumps — this is a genuinely plush ride.
Smart Color Cockpit
App · OTA · Apple Find My
Bright Full-Color Display
A large, high-contrast full-color display with Bluetooth and USB-C shows both batteries, speed, power and your Eco/Trail/Boost mode.
Torque + Cadence, Switchable
A CANBUS system lets you switch between torque and cadence sensing on the fly, and a removable twist throttle drops in when you want it.
Apple Find My + App
Apple Find My and the Ariel Rider app are built in, with OTA updates and UL 2849 + UL 2271 safety certification behind it.
The Cockpit
Both Batteries On One Screen
Full-Color Display + App + Apple Find My
The Kepler's big full-color display shows <em>both</em> battery packs at once, plus speed, power and your Eco / Trail / Boost level — bright and pitch-black in contrast even in sun. Bluetooth and USB-C are built in.
A full left-hand remote covers pedal-assist, walk mode, turn signals, horn and lights, and an adjustable stem lets you swing the cockpit up to 60° for a more upright fit. Apple Find My and OTA updates come standard.
Find Your Fit
Size & Fittings
Kepler Dual Battery PPB 24″ Fat · Hardtail
Will It Fit You?
- Wheelbase45"
- Standover27.5"
- Effective top tube22"
- Weight118 lbs
- Payload400 lbs
- Wheels24 × 4.0 fat
The 24-inch wheels and 27.5" standover keep the Kepler low and stable — at 5'9" you can get both feet down, just not flat-footed. It's a hardtail (no rear shock, just a suspension seatpost) so there's nothing to maintain back there. This PPB ships uncorked for 35+ mph on private property; it weighs 118 lbs with both packs.
The Numbers
Full Specifications
Source: arielrider.com →⚡ E-System
🏍️ Performance
🔧 Suspension & Brakes
✨ Features & Options
The Bike Cave Verdict
Ben's Take
The Kepler surprised me. It's Ariel Rider's long-range play — two batteries, 85 to 105 miles of range, and a screen that shows both packs at once — but what actually stopped me was the frame. There isn't a single visible weld on it, wrapped in a two-tone paint job I've genuinely never seen in this category. Then you sit down and there's memory foam in the saddle, on a suspension seatpost, behind a double-crown fork with real travel. They dropped it to 24-inch fat tires so it sits low and stable, added an adjustable stem so you can dial the fit, and gave you torque-or-cadence sensing on the fly. This PPB version uncorks to 35+ mph on private property once you sign the waiver. At $1,999 with two batteries and this much comfort, it's a lot of bike for the money.
👍 What stands out
- 85–105 mi of real range from the 35Ah dual battery
- Weld-free hydroformed frame — best-looking in its class
- Memory-foam saddle, suspension seatpost, double-crown fork
- Torque + cadence switching and an adjustable-reach stem
- MIK rack, full lighting, Apple Find My — genuinely complete
👎 What to know
- 110 Nm and 35+ mph — it's about range and comfort, not speed
- Hardtail rear (suspension seatpost only) — not a trail jumper
- 118 lbs with both packs — heavy to lift or carry
- PPB — off-road / private-property use only