Electric
Sur-Ron and Talaria service schedule
Electric dirt bikes lose the engine service and keep everything else. No oil changes, no valves, no top end, no air filter. What is left is a chassis that gets ridden harder than most petrol bikes, a set of fluids with two genuine safety traps, and manuals that disagree with each other and with reality about how long anything lasts.
Read this before you top up a brake. Talaria fits a mineral system, type HF10-2, and DOT fluid will destroy its seals. The Sur-Ron Light Bee manual contradicts itself: the parts table says DOT4 while the brake text says mineral, so identify your actual caliper before adding anything. Mixing the two is not a performance question, it is a brake failure.
Sur-Ron Light Bee
Sur-Ron does not stamp model years, so the useful split is pre-2024 against 2024 and later. Earlier manuals are condition-based: inspect, clean, lube, replace when worn, with no periodic table to schedule from. The 2024 manual added a full whichever-comes-first table, and that is where these numbers come from.
| Item | 2024 and later | Notes |
|---|---|---|
| Brake fluid | 10,000 km / 12 mo | The one periodic fluid service on the bike. Confirm the fluid type first, see the warning above. |
| Reduction gearbox | none, ever | Sealed drive with a toothed primary belt and a 420 chain. There is no serviceable gear oil on any Light Bee model year. |
| Primary belt | 20,000 km / 24 mo | First check at 2,000 km. Pre-2024 bikes have a factory-set tension the manual says not to adjust and no replacement interval at all. |
| Chain | check 5,000 km | Lube at 100, 500 and 2,000 km, check or replace at 5,000 km, table maximum 20,000 km or 24 months. Measure it rather than trust the maximum. |
| Sprockets | check 2,000 km | Check or replace at 5,000 km, replaced with the chain at the table maximum. |
| Brake pads | 2.5 mm | Or the 20,000 km table maximum. Independent guides call 2 mm the practical limit. Wear, not distance, is the operative rule. |
| Brake disc | 1.6 mm | Single-sourced to the manual. Measure rather than count kilometres. |
| Spokes | re-tension 100 km | Then 5,000 km, 10,000 km or 12 months, and 20,000 km or 24 months. New wheels settle fast. |
| Wheel and steering bearings | inspect 2,000 km | And again at 5,000 km. The manual gives no replacement distance, only inspections. |
Two figures in that manual should not be treated as targets. The 15 to 30 mm chain slack has a verification problem, covered in the chain guide. And the 225 kPa tyre pressure on the spec plate is a maximum, not a riding pressure. Real off-road use sits far lower, roughly 83 to 124 kPa, and running the plate figure off-road gives you no grip and a hard ride.
Sur-Ron Ultra Bee
One generation, 2023 onward, no model-year split. The schedule is the most detailed of any e-moto here, and also the most single-sourced: almost every figure traces to the one owner's manual, with second sources disagreeing on several. Both the chain and the sprockets carry the same staged checks, and tyres and pads are wear items despite having a table maximum.
| Item | Interval | Notes |
|---|---|---|
| Brake fluid | 10,000 km / 12 mo | DOT4, checked at 100 and 2,000 km. Top up only below a third of the sight window. |
| Reduction gearbox | none | Direct mid-drive with belt and chain. The only fluid on the bike is brake fluid. |
| Primary belt | 20,000 km / 24 mo | Inspect at 2,000 km, check or replace at 10,000 km or 12 months. Dealer guidance circulates a far shorter 500 km or annual figure. The two genuinely disagree. |
| Chain | check 5,000 km | Lube at 100, 500 and 2,000 km, further checks at 10,000 km or 12 months. Free play 10 to 25 mm. |
| Brake pads | 1 mm | The manual's own limit. A second source says 2 mm, which is the more cautious number. |
| Suspension | check 5,000 km | And 10,000 km or 12 months. The manual gives no fork-oil rebuild distance and says not to disassemble the shock. A second source suggests every 2,000 km. |
| Spokes | adjust 100 km | Then 5,000 km and 10,000 km or 12 months, plus a look before every ride. |
| Wheel and steering bearings | inspect 2,000 km | Then 5,000 km, and check or replace at 10,000 km or 12 months. |
| Fastener torque | 2,000 km | And before every off-road ride. On a bike this light and this vibratory, this is the item people skip and regret. |
| Dealer inspection | 6 mo | The manual asks for it regardless of distance covered. |
Talaria Sting, Sting R and MX4
The Talaria split is a real generation change, not a rebrand: Sting up to 2022 against Sting R and MX4 from 2023. The reduction gearbox interval, the oil volume and even the printed grade all changed, so applying one generation's number to the other is a genuine mistake rather than a rounding difference.
| Item | Sting, 2021 to 2022 | Sting R and MX4, 2023 on |
|---|---|---|
| Reduction gearbox oil | 1,000 km | 5,000 km |
| Volume | 120 to 150 ml | 70 to 90 ml |
| First change | 300 km | 300 km |
| Grade | GL-5 85W-90 | GL-5 85W-90 |
| Brake fluid | mineral HF10-2 | mineral HF10-2 |
| Chain | by condition | clean and lube 1,000 km / 1 mo |
| Suspension | by component maker | by component maker |
Three honest caveats on that table. The 2022 Sting manual prints the gearbox grade as CL-5, which the later MX4 manual corrects to GL-5, and the app carries the correction. Neither Talaria manual publishes a numeric brake-fluid replacement interval, so the app's 12 month figure is a conservative dealer cadence and is flagged as an assumption in its own interval sign-off record rather than presented as a manufacturer figure. And the chain has no replacement distance anywhere: it is inspected before every ride, adjusted to 15 to 25 mm free play on the MX4 manual's single-sourced figure, and replaced by measurement.
Talaria also does not publish a suspension service interval, because it does not build the suspension. Sting and MX4 bikes ship with Talaria, FastAce or DNM units depending on the batch, and the manual defers to the component maker. Identify what is actually on your bike: the suspension guide has the real schedules, and the FastAce fork figure in particular is far shorter than any e-moto default.
Stark Varg and Segway
Both are thinner on published data. The Stark Varg runs a primary belt and a 520 final chain, and Stark publishes no belt replacement figure, so the app carries a conservative 6 month inspection nudge for tension, fraying, cracking and tooth wear rather than a replacement schedule. Segway specifies front and rear shock maintenance every 6 months on the X160 and X260, which works out around 50 ride hours at roughly 2 hours a week, but does not define what the overhaul contains.
What the app estimates, and says it estimates
Some e-moto parts have no manufacturer figure worth shipping. Rather than invent one or leave the part blank, Loam Moto carries a conservative estimate that can only raise an amber prompt to look at something, never a red replace-now:
| Item | Estimate | Why it is an estimate |
|---|---|---|
| Fork and shock, stock units | 50 h / 6 mo | Sur-Ron, Talaria and Segway all specify inspection and no internal service hours, and the stock unit brand varies by batch. Complete overhaul sits at 100 h or 12 months. |
| Tyres | 4,000 km | Off-road tread life has no manufacturer specification. This is a tread-check prompt, not a replacement order. |
| Brake pads | 5,500 km | Roughly half of the Sur-Ron manual's 20,000 km table maximum, scaled for e-moto weight and torque, so it prompts an inspection mid-life instead of at the end. |
| Sprockets | 6,600 km | The same scaling applied to the petrol-bike inspection prompt. Hooked teeth, not distance, decide it. |
| Primary drive belt | inspect 6 mo | A prompt to check tension, fraying, cracking and tooth wear. The published 20,000 km and 24 month figures are service-table maxima rather than observed belt life, and Stark publishes nothing at all, so the app schedules an inspection instead of a replacement. |
| Wheel and steering bearings | check 6 mo | A calendar check, sooner after river crossings or a pressure wash. |
| Brake fluid, Talaria | 12 mo | No numeric interval exists in either Talaria manual. A conservative dealer cadence, flagged as an assumption. |
Almost every e-moto table maximum is optimistic off-road. A 20,000 km chain, tyre or pad figure describes a scheduled service ceiling, not observed life on trails. Independent sources put real chain life between 1,000 and 5,000 km, and pads and tyres are wear items measured in millimetres, not kilometres. Use the distance figures to trigger an inspection, then let what you see decide. Your own manual is the authority for your model and your generation.
Why an e-moto needs tracking more than a petrol bike, not less
There is no oil change to force you into the garage every few rides, no engine noise that changes as something wears, and no hour meter, because most of these bikes do not have one. The maintenance is real but it is all quiet: a belt going hard, a chain stretching, bearings loading up with water, spokes settling, fluid ageing in a sealed line. It is very easy to ride an electric dirt bike hard for a season and touch none of it.
Loam Moto counts moving time and distance from the ride itself, then runs each of those parts on its own clock and resolves your exact model and generation to the schedule above, so a Sting is never given the Sting R interval. Where a figure is an estimate, the app says so.
FAQ
What maintenance does a Sur-Ron need?
Everything except engine service. Brake fluid every 10,000 km or 12 months on the 2024 and later Light Bee and on the Ultra Bee, staged chain and sprocket checks from 5,000 km, pads and discs by measured thickness, spoke re-tensioning from 100 km, bearing inspections from 2,000 km, and belt inspection. Sur-Ron reduction drives are sealed, so there is no gearbox oil on any model year.
How often does a Talaria need gearbox oil?
Every 1,000 km on the 2021 to 2022 Sting with 120 to 150 ml, and every 5,000 km on the 2023 onward Sting R and MX4 with 70 to 90 ml. Both take a first change after the 300 km run-in, and the grade is GL-5 85W-90.
What brake fluid does a Talaria use?
Mineral, type HF10-2, never DOT. The Sur-Ron Light Bee manual is the one to be careful with instead: its parts table and its brake text disagree, so confirm your caliper type before topping up.
An electric dirt bike still has a service book
Loam Moto keeps it for you: gearbox oil, brake fluid, belt, chain, sprockets, suspension, tyres and bearings, each on its own clock, fed by real ride time and distance and resolved to your exact model and generation. Your garage and your GPS tracks stay on your phone.
