The 2026 Altis Sigma is engineered for riders who demand uncompromising performance on and off the trail. Powered by a high-output 98V system and a 25kW peak hairpin motor, the Sigma delivers explosive acceleration, massive torque, and top speeds exceeding 80 MPH for an adrenaline-filled riding experience.

Its lightweight forged aluminum chassis, upgraded suspension system, and precision-tuned throttle response provide exceptional control, stability, and agility across rugged terrain. With advanced regenerative braking, race-inspired handling, and long-range battery capability, the 2026 Altis Sigma blends raw power with cutting-edge technology to create one of the most capable high-performance electric dirt bikes in its class.

PERFORMANCE

Top speed — 80 mph (Trail configuration: 19 in front, 19 in rear, 39T sprocket)

Peak power — 25 kW (34 hp) hairpin motor

Torque — 601 Nm (443 ft-lb)

Range — Not published by manufacturer

BATTERY AND CHARGING

Battery — 97.2V 35Ah, Samsung 50S cells

Energy capacity — 3.4 kWh

Charge time — 2 hours to 80 percent, 3 hours to 100 percent

Charging input — AC 110V, 12.5A

CHASSIS AND BRAKES

Front suspension — 220 mm travel

Rear suspension — 85 mm shock, 200 mm rear wheel travel with linkage

Front brake — 260 mm hydraulic disc

Rear brake — 220 mm hydraulic disc

Regenerative braking — 5 levels

Frame — Forged aluminium alloy

Wheels — Spoked, aluminum rims

Tires — CST off-road

Chain — 520H

DIMENSIONS AND WEIGHT

Seat height — 35 in

Ground clearance — 13 in

Wheelbase — 51 in

Steering head angle — 26 degrees

Weight with battery — 198 lb (90 kg)

ELECTRONICS

Display — 3.5 in TFT with NFC keyless start

LEGAL

Off-road use only. Not street legal.

Specifications published by Altis Powersports. The 2026 Trail configuration (19 in front, 19 in rear, 39T sprocket) is geared for 80 mph; the MX configuration (19 in front, 16 in rear, 44T sprocket) is geared for 63 mph. Specifications are subject to change by the manufacturer.

Voluntary returns: Request a return within 5 calendar days after delivery. This is the request deadline, not the deadline for the bike to arrive back. For an ordinary change-of-mind return, the bike must remain unopened, unused, unassembled, uninstalled, complete with its original packaging and included parts, unmodified, free of customer-caused damage, and resalable, unless a different product-specific rule was disclosed before purchase.

Cancellation before shipment: If we receive your request before the goods are handed to the carrier, customer-caused cancellations incur a 5% cancellation fee deducted from the amount actually paid after discounts, including paid shipping and tax. For partial cancellations, the calculation covers only the canceled items and their attributable paid shipping and tax. No fee applies to Simmons-caused cancellations or where law or binding payment-provider requirements prohibit it. No pre-shipment restocking fee is added.

After shipment: Approved change-of-mind complete-bike returns incur 10% of the discounted bike price, excluding tax and shipping. Original shipping paid at checkout is nonrefundable, and the customer pays return shipping. No additional 5% cancellation fee applies. We do not charge twice for the same cost. A battery supplied with the bike follows the complete-bike return policy when returned with that bike.

Problems with your bike: Defects, incorrect items, shipping damage, warranty concerns, recalls, and legally required remedies are reviewed separately. Opening packaging does not by itself eliminate protected claims. The change-of-mind restocking fee does not apply to defective or incorrect items, shipping damage not caused by the customer, or legally required remedies. We bear costs where our error, the applicable remedy, or law requires it. Mandatory law and binding payment-provider requirements control.

Refunds: Normally issued to the original payment method. For returned bikes, inspection and any approved refund are completed within 10 business days after receipt, unless an earlier deadline applies. Cancellation refunds are issued promptly within applicable deadlines. Allow an estimated additional 5–10 business days for bank or provider posting; actual timing varies.

Return instructions: Email simmonsmotorsportsinc@gmail.com with your order number for written instructions before shipping anything back, refusing delivery, or arranging redirection. Our contact address is not automatic return authorization. Never send an unsafe battery through ordinary return shipping.

Read the full Return & Refund Policy and Terms & Conditions for all requirements and exceptions. Policy version: September 15, 2026, where properly disclosed and applicable. Earlier orders retain their applicable policy.