One of the most common parts-ordering mistakes on electric dirt bikes: buying the wrong chain pitch. Unlike gas bikes where most MX machines run #520, the e-moto world spans five different pitches — and some manufacturers even vary the spec between model years. This guide is the reference you need before ordering.
Chain Pitch Quick Reference
| Bike | Chain Spec | Length |
|---|---|---|
| Sur-Ron Light Bee X / S | #420 | 106L (stock) |
| Sur-Ron Ultra Bee | #428 | — |
| Talaria Sting MX3 / MX4 | #420 | 104L |
| Talaria Sting MX5 Pro | #418 | 104L |
| Segway X160 / X260 | #420 | 106L |
| Rawrr Mantis | #428H | — |
| Altis Sigma / Sigma MX | #428H | — |
| Altis Delta | #420 | — |
| Arctic Leopard XE Pro / XF | #428 | — |
| Electric Motion Epure | #428 | — |
| 79Bike Falcon GT (secondary) | #420 | — |
| Stark Varg | #520 | — |
What the Numbers Mean
Chain pitch is a standardized coding system from the ANSI/ISO standard:
- #418 — 1/2" pitch, slightly narrower roller than #420. Used on Talaria MX5 Pro. Rare in the e-moto world.
- #420 — 1/2" pitch, 1/4" roller width. The most common e-dirt bike chain — Sur-Ron LBX, Talaria MX3/MX4, Segway X260, Altis Delta.
- #428 — 1/2" pitch, 5/16" roller width. Physically wider than #420. Used on higher-power machines: Sur-Ron Ultra Bee, Arctic Leopard XE Pro, Electric Motion Epure.
- #428H — Same pitch and roller width as #428, but with heavier side plates. Used on the highest-torque e-motos: Rawrr Mantis, Altis Sigma. You can run a standard #428 on these bikes, but H-rated chains last longer.
- #520 — 5/8" pitch. The MX standard from the gas world. The Stark Varg is the only e-moto in this class that uses it — its drivetrain is gas-bike derived.
Chains are not interchangeable between pitch specs. A #428 chain will not sit correctly on #420 sprockets and will skip or throw under load.
#420 Chain Options
Most popular category — covers Sur-Ron LBX, Talaria MX3/MX4, Segway X160/X260, Altis Delta.
- DID 420 NZ3 — Sur-Ron/Segway Spec (106L): $75.99
Pre-cut to the correct Sur-Ron Light Bee X and Segway X260 length. Best value for those bikes. - DID 420 NZ3 Standard (120L roll): $75.99
Full 120-link roll, cut to length. Covers Talaria, Altis Delta, and any other #420 bike. - DID 420 VX O-Ring Sealed: $121.20
Sealed chain with O-rings around each roller — holds grease in, keeps mud out. Lasts 2-3x longer in trail conditions. Worth it for riders who don't want to lube after every session. - DID 420 NZ3 Connecting Links (5-pack): $3.99
Always carry one. Chain breaks happen.
#428 Chain Options
For Sur-Ron Ultra Bee, Arctic Leopard XE Pro, Electric Motion Epure.
- DID 428 NZ Standard: $126.85
Standard non-ring #428 chain. Good for track use where you maintain and lube regularly. - DID 428 VX X-Ring Sealed: $204.80
Premium sealed chain with X-ring cross-section — lower friction than O-ring, even better sealing. The right choice for trail and enduro use on high-power machines. - DID 428 NZ Connecting Link: $3.80
- DID 428 VX Press-Fit Link: $10.99 — X-ring spec requires a press-fit link, not clip type.
#428H Chain Options
For Rawrr Mantis and Altis Sigma / Sigma MX.
How to Check Chain Wear
A worn chain accelerates sprocket wear dramatically. Replace chain and sprockets together when worn — a worn chain on new sprockets eats the teeth within a few rides. Symptoms of a worn chain:
- Chain skips under hard acceleration
- Visible stretch when held next to a new chain
- Any reading over 0.75% elongation on a chain wear indicator tool
- Hooked or asymmetric wear on sprocket teeth
Check chain tension every 8–10 hours. Most e-dirt bikes spec 20–30mm of vertical slack at the midpoint of the lower run — check the sticker on your swingarm.
Browse all chain, sprocket, and drivetrain parts on Wired Whips by DID Chains or through your specific bike's brand page.