Altis Sigma Assembly GuideUpdated 5 hours ago

Watch & wrench along.

Follow our detailed, step-by-step unboxing, assembly & initial-setup walkthrough to go from pallet to first ride with zero guesswork. We cover every task Patrick tackles in the REV Rides video—from opening the giant crate to the final bolt check—plus pro tips on battery care, bar fit, 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

1. Put on gloves—the steel edging is razor-sharp.
2. Lift each staple band with a chisel, then bend upright with pliers; work around all four sides.
3. Pro tip: Preserve the crate sides as storage panels—only remove the front or left wall.

2. Lift the Bike Cleanly

• 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 Charge

1. Snip the shipping zip-tie, open left side cover, and grab the red + black keys.
2. Turn ignition, flip the alloy latch and disconnect the 6-gauge QS8 plug.
3. Wiggle the 72 V pack upward—she’s snug! Place on a non-flammable surface.
4. 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

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

5. Cockpit & Controls

• Bar clamp: three-piece CNC, four M8 bolts – Loctite & snug, gaps even front/back.
• Throttle / Display:
  1. Place 2× rubber grommets on the OLED mount; bolt to top triple.
  2. Green→green & orange→orange waterproof plugs; align arrows before pushing home.
• Brakes: 4 mm Allen lever clamps; aim levers in line with outstretched index-finger.

6. Foot Pegs, Kick Stand & Magnet Switch

1. Peg brackets use shoulder bolts—blue-Loctite & torque 18 ft-lb.
2. Install kick-stand spring; adjust sensor nut so the magnet just kisses the switch when down (prevents ghost cut-outs).
3. Verify dash shows P when stand deployed, Ready when up.

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

1. Seat pack, reconnect QS8, close hatch.
2. NFC tricks: press seat-latch button to wake bike if tag/key is lost.
3. 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

If you've followed along until this point, 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!