Altis Sigma (2026)

The Altis Sigma runs a 97.2V 35Ah Samsung 50S pack — 3,402 Wh — into a hairpin-wound mid motor rated at 25 kW (34 hp) peak through a 450 phase-amp controller. Altis quotes 601 Nm at the rear wheel and 80+ mph on the 19/19 Sigma with its 39-tooth sprocket. The 19/16 Sigma MX swaps to a 44-tooth sprocket, which trades top end for drive and is quoted at 670 Nm and 68 mph.

2026 is a substantially revised chassis, not a colour change. Front travel goes from 200 mm to 220 mm, the rear axle steps up to 20 mm, the chain moves from 428H to 520H, and seat height and ground clearance grow to 35 in and 13 in. Wheelbase is 51 in and the bike weighs 198 lb with the battery in. The rear is linkage-actuated — an 85 mm shock stroke gives roughly 200 mm of wheel travel — and both ends are adjustable. Braking is 4-piston hydraulic on a 260 mm front and 220 mm rear rotor, with five levels of regenerative braking set from the 3.5 in TFT display. The display also handles NFC start, and there is a Baja-style headlight, taillight and brake light.

Expect 40–50 miles of real-world range depending on how hard it is ridden. The standard charger takes the pack 20–80% in about two hours and to full in about three; an 18-amp fast charger cuts that to 40–45 minutes. Straight-pull spoked aluminium rims and CST off-road tyres are fitted as standard.

Two colourways, Black and Red, and two wheel setups: 19/19 or 19/16 MX. The 35 in seat suits riders from roughly 5'9" to 6'4".

$250 flat crated freight on every complete bike to any address in the lower 48 (DC included); Yozma & HeyBike ship free. Bikes leave within 3 business days and arrive curbside in about a week — the carrier calls to schedule delivery. Pick up in Colorado Springs and it is free, with our pre-delivery inspection: uncrated, torqued, charged and test-ridden with you. Reserve bikes ship on the ETA printed above. Add-on parts and wheel sets ship separately at no extra charge. No shipping to AK, HI, territories, APO/FPO or international.

12-month warranty on motor, controller and battery.

Manufacturer warranty is honored and handled through our Colorado Springs service bay. Order it wrong and we fix it: if a part we sold does not fit, return shipping is on us. See the refund policy for bikes and battery returns.

Every bike ships as an off-road / closed-course machine. Supermoto wheels do not make a bike street-legal on their own; titling, lighting and registration are the rider's responsibility and vary by state. Ask us before you buy if the street is the plan.