Altis Sigma VS Ventus One+
Quick Verdict
The Rundown
The Altis Sigma and Ventus One+ are both flagship-tier electric motorcycles, but the Ventus wins on nearly every spec. The Ventus produces 28kW versus 22kW, hits 81 mph versus 64 mph, weighs 154 lbs versus 194 lbs, and runs a belt drive versus chain. The Sigma counters with a 300 lb max rider weight versus 243 lbs, a $700 price advantage ($5,299-$5,899 vs $5,999), and a slightly different battery at 3402Wh versus 3600Wh. For most riders, the Ventus is the more capable machine. For heavier riders who need the 300 lb capacity, the Sigma fills a critical niche.
Why Choose
Altis Sigma
Heavier riders up to 300 lbs who want flagship power and don't need the Ventus's 81 mph top speed.
- 300 lb max rider weight vs 243 lbs
- $5,299-$5,899 — up to $700 cheaper
- 22kW still delivers serious performance
- Higher load capacity for gear and accessories
- More planted feel at speed due to 194 lb weight
Why Choose
Ventus One+
Performance-focused riders who want the most power (28kW), highest speed (81 mph), lightest weight (154 lbs), and belt drive reliability.
- 28kW peak power — 27% more than Sigma's 22kW
- 81 mph top speed vs 64 mph — 17 mph faster
- 154 lbs — 40 lbs lighter than Sigma
- Belt drive — zero chain maintenance
- 3600Wh battery with 45-70 miles range
Head to Head
Spec-by-Spec Comparison
| Spec | Altis Sigma | Ventus One+ |
|---|---|---|
| Price | $5,299–$5,899 | $5,999 |
| Top Speed | 64 mph | 81 mph |
| Peak Power | 22 kW | 28 kW |
| Range | 40–70 mi | 45–70 mi |
| Weight | 194 lbs | 154 lbs |
| Battery | 3402 Wh | 3600 Wh |
| Charge Time | ~3 hrs | ~4 hrs |
| Drivetrain | Chain | Belt Drive |
Price
Altis Sigma
$5,299–$5,899
Ventus One+
$5,999
Top Speed
Altis Sigma
64 mph
Ventus One+
81 mph
Peak Power
Altis Sigma
22 kW
Ventus One+
28 kW
Range
Altis Sigma
40–70 mi
Ventus One+
45–70 mi
Weight
Altis Sigma
194 lbs
Ventus One+
154 lbs
Battery
Altis Sigma
3402 Wh
Ventus One+
3600 Wh
Charge Time
Altis Sigma
~3 hrs
Ventus One+
~4 hrs
Drivetrain
Altis Sigma
Chain
Ventus One+
Belt Drive
Deep Dive
Key Differences
Power & Speed
Altis Sigma
22kW peak, 64 mph — strong flagship performance
Ventus One+
28kW peak, 81 mph — 27% more power, 17 mph faster
The Ventus produces 27% more power and reaches 17 mph faster. Both bikes are firmly in flagship territory, but the Ventus pushes into electric motorcycle speed ranges at 81 mph. The Sigma's 64 mph is still impressive and handles most riding scenarios. The gap matters most on open roads and straightaways where the Ventus pulls ahead decisively.
Range & Battery
Altis Sigma
3402Wh battery, 40-70 miles — proven capacity
Ventus One+
3600Wh battery, 45-70 miles — 6% more capacity
The batteries are within 6% of each other (3600Wh vs 3402Wh), and the range specs overlap substantially. The Ventus edges slightly ahead at the low end (45 vs 40 miles) likely due to its lighter weight and belt drive efficiency. For practical purposes, both bikes handle full-day riding. This is effectively a tie.
Weight & Handling
Altis Sigma
194 lbs — planted feel, supports heavier riders and gear
Ventus One+
154 lbs — 40 lbs lighter with superior power-to-weight (182W/lb)
The Ventus is 40 lbs lighter AND more powerful — a rare combination. At 154 lbs, it handles like a middleweight while performing like a heavyweight. The Sigma at 194 lbs feels planted at speed, which some riders prefer, but the weight becomes a disadvantage on tight trails, when loading, and during extended technical riding. The Ventus's 182W/lb power-to-weight ratio is best-in-class.
Ownership & Value
Altis Sigma
$5,299-$5,899 — up to $700 less, 300 lb rider capacity
Ventus One+
$5,999 — belt drive saves on maintenance, lighter, more powerful
The Sigma saves up to $700 and supports heavier riders (300 vs 243 lbs). The Ventus includes belt drive, which saves hundreds in chain maintenance over the bike's lifetime. Neither includes Send Bikes dealer warranty or financing. Both brands are relatively new with developing service networks. Value depends on whether you prioritize rider capacity or peak performance.
The Bottom Line
Our Pick: Ventus One+
The Ventus One+ is the more capable machine — more power, faster, lighter, and belt-driven. The Sigma's case rests on its 300 lb capacity, lower price, and more planted ride feel.
Altis Sigma
Get the Altis Sigma if you weigh over 243 lbs, prefer a heavier and more planted ride feel, or want to save up to $700 while still getting 22kW of flagship performance.
Ventus One+
Get the Ventus One+ if you want the best performance numbers available — 28kW, 81 mph, 154 lbs, belt drive — and weigh under 243 lbs.
Send Bikes Alternative
The SR delivers 25kW with belt drive, a U.S. dealer warranty, and Terrace Finance for $5,699 — matching the Sigma's power with established dealer support.
Service & Warranty
Neither the Altis Sigma nor the Ventus One+ includes Send Bikes dealer support. Both are newer brands with developing service networks. Parts availability and long-term support remain uncertain for both compared to established brands like Sur-Ron or Talaria.
Financing & Ownership
Neither bike is available through Send Bikes financing. Send Bikes offers Terrace Finance on the SR ($5,699, 25kW), which delivers comparable power to the Sigma with belt drive, a factory warranty, and established dealer support.