Altis Sigma Assembly Guide

Watch & wrench along.

Follow our detailed, step-by-step unboxing guide and video and learn how to assemble & setup the Altis Sigma electric dirt bike. We take you step-by-step from from pallet to first ride with zero guesswork. From opening the giant crate to the final bolt check—plus learn pro tips on battery care, brake bedding, and more.

• Keeps your warranty intact – correct torque, Loctite, and wire-routing tips straight from the shop floor.
• Saves hours of head-scratching – exact tool sizes, bolt locations, and hidden “gotchas” Patrick points out on camera.
• SEO bonus – if you searched Altis Sigma assembly, Sigma MX setup, or how to unbox an Altis, you’re in the right place.
  
  

Basic hand tools

•  5 mm, 4 mm & 3 mm Allen keys (quality T-handle or ratchet bits)
•  8 mm, 10 mm, 14 mm sockets / wrenches
• Torx T25 for rotor bolts
•  Large flat-head or cold-chisel + dead-blow mallet (crate nails)
• Torque wrench ― 1.5 – 18 ft-lb (18 – 220 in-lb) range
• High-strength blue Loctite
•  Soft-face drift or long screwdriver (to push greased axle)
• Zip-ties & side-cutters
• Bike stand or strong bucket (lifts rear wheel)
• Nitrile gloves & shop towels (grease + Loctite)

1. Crack the Crate Like a Pro

• Put on gloves—the steel edging is razor-sharp.
• Lift each staple band with a chisel, then bend upright with pliers; work around all four sides.

Pro tip: Preserve the crate sides as storage panels—only remove the front or left wall.

2. Lift the Bike Carefully

• Two-person job: Slide forks under the swing-arm, pivot up and over the stand.
•  Avoid gripping plastic bodywork—the CNC frame rails are the safe lift points.

3. Battery Out & On Charger

• Snip the zip-tie, open left side cover, and grab the red + black keys.
• Turn ignition, flip the alloy latch and disconnect the 6-gauge QS8 plug.
• Wiggle the 72 V pack upward—she’s snug! Place on a non-flammable surface.
• Plug charger into the pack first, wall second; LED flashes red → green when ready.
• Cold garage? The Sigma BMS warms to ~50 °F before charge current flows.

4. Front Wheel & Spacer Install

• Loosen pinch bolts, spin axle nut off (19 mm).
• Grease axle lightly; slide left-right spacers into hub (they’re identical).
•  Insert “fat” axle end on brake-disc side, tap through with your drift.
• Torque axle nut to 44 ft-lb, then pinch bolts to 7 ft-lb alternating.

5. Cockpit & Controls

a. Bar Clamps:

• Three-piece CNC, four M8 bolts
• Loctite & snug, gaps even front/back

b. Throttle / Display:

• Place 2× rubber grommets on the OLED mount; bolt to top triple.
• Green→green & orange→orange waterproof plugs; align arrows before pushing home.

c. Brakes:

• 4 mm Allen lever clamps; aim levers in line with outstretched index-finger.

6. Foot Pegs, Kick Stand & Magnet Switch

a. Peg brackets use shoulder bolts—blue-Loctite & torque 18 ft-lb.

• Install kick-stand spring; adjust sensor nut so the magnet just kisses the switch when down (prevents ghost cut-outs).
• Verify dash shows P when stand deployed,

7. Calipers & Rotors

• Slide caliper over 220 mm ≈ 8.7 in rotor; leave M8 mount bolts finger-tight.
• Squeeze front brake, then torque caliper bolts to 18 ft-lb—instant alignment.
• Back out each T25 rotor bolt one-at-a-time; add Loctite and torque to 4.5 ft-lb.
• Paint-marker the heads for easy future visual inspection.

8. Re-insert Battery & Power-Up

• Seat pack, reconnect QS8, close hatch.
• NFC tricks: press seat-latch button to wake bike if tag/key is lost.
• Cycle through Eco, Normal, Race via triple-button cluster; test reverse by holding R and easing throttle (walk speed only).

9. Tire Pressure, Wheel Balance & Brake Bedding

• Inflate to 32 psi cold (street) or your preferred off-road pressures.
• Spin wheels on stand; if hop < ⅛ in (3 mm) you’re golden—otherwise add stick-on weights opposite valve.
• Bed brakes: 10 moderate stops front & rear (5 sec on / 5 sec off). Discs may “ting” as they heat—normal.

10. Final 15-Minute Bolt Walk

Grab your 4-way T-handle and verify every paint-marked fastener: axle, triple-clamp, motor mounts, foot-peg pins, swing-arm pivot, linkage bolts. Loose now beats lost on-trail.

Q: Does Sigma MX assemble the same way?

A: Yes—the smaller 17-inch MX follows identical steps; only axle torque and bar height differ.

Q: Do I have to run 32 psi?
A: That’s the manufacturer street spec. Drop to 18-22 psi for sand or loam but check bead-lock tightness after every ride.

Q: Where’s the regen thumb-lever?
A: Sigma brakes are full-size motorcycle units with giant pads—no weak MTB discs here. Strong mechanical braking + battery longevity beat constant regen heat.

Ready to Ride

With the crate cleared, bolts torqued, and battery topped, your Altis Sigma / Sigma MX is officially dialled. Grab that NFC tag, strap on protection, and hit your favorite trail or MX track.

Tag @revrides_official on Instagram with your first-ride photos—let’s see what the Sigma family can do!