Super73 RX
moped-style- Years
- 2020-present
- Class
- Class 2 as shipped
- Motor
- 750W rear hub
- Battery
- 960Wh, removable
What our techs think of this bike
3/5
Repairability
3/5
Parts availability
The RX is the flagship of the Super73 range and the one we would pick for anyone who actually rides hard: full suspension transforms the platform from a boardwalk cruiser into something that soaks up real streets and trails. The trade is that you are now maintaining a heavy, fast, full-suspension machine, which means more service items than any hardtail in the lineup, and the same platform-wide rule applies: stock RXs are predictable, modified ones are where the difficult faults live.
Confidence: Moderate: good mechanical access and a simple drivetrain, but the patterns below come from service experience rather than fleet data, and the suspension and modification variables make RX examples vary widely.
Something wrong right now? Start here
Sixty seconds of owner-level checks, per the manufacturer's guidance, before anyone books anything:
- Battery seated and locked; try a full charge before diagnosing anything else
- Super73 app pairs and shows the bike; confirm the active ride mode is legal for your area
- Connectors clean, dry, and fully seated, especially after wet or muddy rides
- Brake levers release fully; a stuck lever sensor cuts motor power
- Bike is running the stock controller and firmware; note any modifications before service
Still stuck? Find your symptom in the table below, or get matched with a tech.
Known issues and service items on the RX
Each item is labeled by what backs it: manufacturer documentation, common service work, patterns our techs see, or our own recommendation. Repair prices come from our national pricing tables and are never influenced by affiliate relationships.
| Issue | When it shows up | First thing to check | DIY if | Call a tech when | Typical cost |
|---|---|---|---|---|---|
| Brakes work the hardest of any bike in the lineupObserved wear patternGets worseThe RX is the heaviest, fastest-feeling Super73, and its brakes manage all of that energy at every stop. Pads wear early by bicycle standards, and riders usually notice fade on long descents or a longer lever pull before they notice thin pads. | More likely with throttle-heavy riding at full speed; no reliable interval | Check pad thickness through the caliper window, look for rotor scoring, and note whether the lever pulls closer to the grip than it used to. | A standard pad swap on a clean, straight rotor is within reach of a careful owner with common tools. | Braking stays weak after new pads, the lever feels spongy and needs a bleed, or the rotor is scored or discolored. Get a tech | $50 to $200 |
| Suspension pivots and dampers add service items the hardtail models do not haveOur recommendationMaintenanceFull suspension is the reason to buy an RX, and it is also a set of wear points: fork seals, shock hardware, and pivot bearings. Our recommendation: have the suspension inspected as part of a yearly tune rather than waiting for play or clunks, because loose pivot hardware accelerates its own wear. | More likely with hard riding, jumps, and wet climates; no reliable interval | With the bike on the ground, hold the front brake and rock the bike to feel for play, then compress the suspension and listen for clunks or squeaks. | Wiping stanchions clean and checking visible pivot hardware for obvious looseness is an owner task. | You feel play, hear knocking over bumps, see oil on the fork stanchions, or the shock has lost its damping feel. Get a tech | $80 to $150 |
| Electrical faults concentrate on modified bikesObserved wear patternRide-stoppingThe RX attracts the performance end of the Super73 modification scene, and that is where most of the platform's serious electrical faults live: aftermarket controllers, firmware tunes, and spliced wiring. The stock electrical package is predictable by comparison. | Any time; more likely where controller, firmware, or wiring history is unknown | Establish modification history before any electrical diagnosis. On a stock bike, confirm connectors are clean, dry, and seated. | You made the modification, kept the stock parts, and can revert to stock to see whether the fault clears. | The bike came modified, stock parts are gone, or faults persist on a confirmed-stock bike. Get a tech | $120 to $350 |
| Range complaints deserve diagnosis before a replacement packOur recommendationGets worseThe RX carries a large, expensive pack, and its weight plus off-road tires mean range varies enormously with terrain and riding style. Our recommendation: establish a fair baseline before concluding the pack is failing, because many range complaints on this bike are terrain and throttle habits, not cell fade. | More likely with age, cold weather, and storage at full or empty charge; no reliable interval | Charge fully, set correct tire pressures, and ride a familiar route in mild weather at moderate throttle to get a fair range baseline. | Range recovers once pressures, temperature, and riding style are accounted for. | Range keeps falling on fair baselines, the pack will not reach full charge, or the bike shuts down under load with charge showing. Get a tech | $90 to $800 |
| Replacement tires are a plan-ahead item in moto-style sizesObserved wear patternMaintenanceLike the rest of the lineup, the RX wears its rear tire first because the hub motor drives it directly, and its moto-style tire sizes are rarely on the shelf at a local bike shop. Owners who order a replacement at the first sign of squaring never end up stranded waiting on shipping. | Rear wears first with throttle-heavy riding; no reliable interval | Compare rear tread depth to the front and look for squared-off center tread or exposed casing on the rear. | You have the correct replacement on hand and are comfortable removing the rear wheel, including the motor connector. | You would rather have the motor wheel removed, reinstalled, and torqued properly, or the rim needs inspection too. Get a tech | $80 to $200 |
| Rim, tube, and wheel damage from curb and jump impactsObserved wear patternRide-stoppingFull suspension invites harder riding, and the wheels take what the suspension does not absorb. Dented rims, pinched tubes, and loosened spokes after impacts are the standard results, and the suspension can mask wheel damage until it becomes a flat or a wobble. | Any time; more likely with jumps, curb hops, and off-road riding | After any hard impact, check tire pressures, run a finger around both rim edges for dents, spin the wheels against a fixed point for wobble, and pluck the spokes. | A front tube swap on an undamaged rim is a normal owner job. | A rim is dented, a wheel wobbles, spokes are loose, or the damage is on the rear motor wheel. Get a tech | $60 to $300 |
Typical independent/mobile repair range; parts, labor, location, and underlying fault change the final price.
Not sure which issue you have? A diagnosis visit typically runs $50 to $100, and diagnostic fees typically credit toward the repair.
Maintenance: our shop's starting points
Our shop's starting point, not a manufacturer schedule: chain lube monthly even if you rarely pedal, tire pressure weekly, brake pad checks monthly if you ride throttle-heavy, a suspension and pivot check at a yearly tune, a rim and spoke check after any hard impact, and the battery stored indoors between 20 and 80 percent charge when the bike sits. Shorten every interval if you ride wet, salty, or dusty routes.
What owning one is actually like
Budget attention in three places. Brakes first, because this is the heaviest and hardest-ridden Super73 and pads go quickly by bicycle standards. Tires second, because the rear takes all the motor torque and the moto-style sizes mean a replacement is an order-ahead item, not a same-day pickup. Suspension third: fork seals, shock hardware, and pivot bearings are wear points the hardtail models simply do not have, and a yearly inspection catches loose hardware before it chews itself up.
Electrically, keep it stock and it will mostly leave you alone. The RX draws the performance crowd, and aftermarket controllers and firmware tunes are behind most of the serious faults we see. If you change ride modes, know that settings beyond Class 2 behavior can change the bike's legal class on your local streets.
Buying one used
Modification history is the big Super73 check, and on the RX it comes with a second question: how hard was it ridden? Ask about controller and firmware changes first, and treat vague answers as a real price problem. Then inspect for impact life: run a finger around both rim edges, spin the wheels for wobble, rock the bike with the front brake held to feel for pivot or headset play, and look for oil on the fork stanchions. Finally, the battery: it is the most expensive component on the bike, so ask for a full-charge range demonstration or price in a replacement pack (Super73 RX replacement battery (OEM)). A stock, straight RX with healthy suspension is a genuinely great machine; a tuned, jumped one is a project wearing a great machine's paint.
Parts we'd use
What we would actually fit, and why. Links may earn us a commission.
- Super73 RX replacement battery (OEM)
The pack we fit when diagnosis confirms failure: OEM keeps fit and battery management matched, and this is not a part to buy generic.
- Super73 disc brake pads (OEM)
Convenient correct-fitment source. Not OEM-only: any reputable pad in the matching shape works just as well.
- Super73 RX replacement tires and tubes (OEM)
Moto-style sizes are rarely stocked locally; ordering the correct fitment from Super73 avoids a stranded wait.
When OEM is not necessary: brake pads, tubes, and the chain are standard service parts, and any reputable brand in the matching spec works; standard suspension service parts are also serviceable through any competent suspension shop. OEM matters most for the battery, controller, and display, where fit and battery management are proprietary. The moto-style tire sizes are rarely stocked locally, so order correct-fitment replacements before you need them.
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