Newest version! 2026

  •    Upgraded BMS: Improved battery efficiency and reliability with up to 10 more range

    •    Higher RPM: Boosted motor speed from 7800 to 8300 RPM

    •    Increased Torque: Raised from 601 Nm to 626 Nm for stronger acceleration

    •    New Throttle tune: Enhanced modulation and smoother power delivery for better off-road control more aggressive in race

    •    New Front suspension: Dual spring front suspension

    •    Dust Seals: in rear suspension linkage

    •    New front wheel hubs, on wheels for more strength and stability

Shipping out of state is via flat rate freight for $300. Local delivery within a 25mile Radius for $350 assembled or $150 unassembled. Pickup from either location assembled for an additional $200 or unassembled at no additional cost.

Sigma, the all-new 98-Volt, 35-amp hour long-range battery, electric dirt bike is a groundbreaking bike that has already shaken up the entire e-moto industry. The Altis Sigma is available at WYRD RYDS in two colors. This cutting-edge bike boasts a robust 27 HP (20kW) peak Hairpin motor, delivering an impressive 443 lb-ft (601 Nm) of torque for exhilarating off-road adventures. With a lightweight aluminum alloy frame, advanced adjustable air-spring suspension, and a long-lasting Samsung 50S battery pack, the ALTIS SIGMA combines performance and versatility like never before. Experience the future of electric riding with enhanced features such as a 3.5" TFT display that enables never-before seen tuning, five levels of regenerative braking, and heavy-duty CST off-road tires. The Altis Sigma has a Top Speed of 20 Mph From the factory - see below for unlocked top speed. 

IN STOCK!

Please note: A 5% cancellation fee applies to all orders. Returns are not accepted once the item has shipped. Finance, Affirm or Installment payment option will be an additional 7.99% fee, billed after check out. No discount codes can be used, if used order will be cancelled .

Quantities are extremely limited and selling fast. Order soon if you want to be one of the first to own the Altis Sigma. Future shipping updates will be posted here. 

IMPORTANT NOTE: NOTICE: THIS BIKE IS SOLD FOR OFF-ROAD OR TRACK USE ONLY.  IT IS SPEED AND POWER LIMITED TO COMPLY WITH FEDERAL, STATE AND LOCAL  LAWS. PLEASE DO NOT BYPASS THIS RESTRICTION OR MODIFY IT TO GO FASTER.. THE BUYER TAKES FULL RESPONSIBILITY OF THE PROPER USE OF THIS PRODUCT WHICH MAY OR MAY NOT CONFORM TO ALL APPLICABLE LAWS IN THE REGION  IT IS RIDDEN.

Warning: ID VERIFICATION EMAIL WILL BE SENT TO YOU AFTER ANY MODEL PURCHASE AND MUST BE COMPLETED BEFORE SHIPPING IS CONFIRMED, OR IN-STORE PICKUP - MUST BE 18 YEARS OR OLDER TO PURCHASE

Design & Performance Upgrades:

Altis decided to make some upgrades to the final production bikes. Here’s a list of some of those changes!

1) 22kw Motor output, increased from 20kw
2) Upgraded front fork springs
3) 3-inch Handlebar riser bar
4) New chain guard included
5) New rotor bash guard included

ALTIS SIGMA PRODUCT HIGHLIGHTS:Battery: 97.2V 35Ah (3402Wh) Samsung 50S battery Cells (Greenway Battery Pack)
Motor: 22 kW peak Hairpin Motor (Automotive standard)
Torque: 601 Nm (44T Sprocket)
Wheels: Laced wheels: Fr 19" / Rr 19" (Straight-pull)
Suspension: Adjustable off-road air-spring suspension
Display: 3.5" TFT display with NFC feature
Tuning: Adjust throttle curves, aggressiveness, and more through the display
Regenerative Braking: 5 levels of regenerative braking
Lights: Headlight & Taillight (w/brake light) switch, has high beam and low beam
Brakes: Heavy duty 4 piston DOT disc brakes
Top Speed: 20 Mph (From the factory. See below for unlocked top speed)
SIGMA: CST off-road tires (potentially different tread pattern)

ALTIS SIGMA CHASSIS SPECIFICATIONS
Weight (with battery): 185 Lb (84 kg)
Wheelbase: 51 Inches (1285 mm)
Front Brake Disc Diameter: 260 mm
Rear Brake Disc Diameter: 220 mm
Chain: 428H
Frame Design: Aluminum alloy forging
Ground Clearance: 12 Inches (300 mm)
Seat Height: 33 Inches (840 mm)
Steering Head Angle: 26°
Suspension Travel (Front): 8 Inches (200 mm)
Suspension Travel (Rear): 3.3 Inches (85 mm) with linkage
Wheels: Spoked wheels with aluminum rims
Max Load: 300 lbs

ALTIS SIGMA POWERTRAIN SPECIFICATIONS:
Rated Output: 8 kW
Controller: 450-Phase Amp Controller 
Torque: 75 Nm
Battery: Lithium-lon ALTIS PowerPack
Battery Capacity: 35 Ah
Charging Input: AC110V/220V 12.5A
Charging Time 100%: 180 min.
Charging Time 80%: 120 min.
Cooling: Air cooled
Energy Content: 3.402 kWh
Electric Motor: 98V - Hairpin motor
Max Power: 20+ kW
Gearbox: 600 mile first service, 5000mile/5 year 2nd service

• Sigma (19/19 Wheels) – Ideal for riders who want versatility. Whether you’re hitting trails, gravel roads, or occasional pavement, this setup provides a balanced mix of stability, speed, and off-road capability. If you’re looking for higher top speeds while maintaining off-road performance, the standard Sigma is the way to go.