Gotrax Dolphin 26" Step-Through Commuter

What the Dolphin is — and who it's for

The Dolphin is Gotrax's city bike: a 26" step-through commuter with a 350 W rated (500 W peak) rear hub motor, throttle plus five pedal-assist levels, a front suspension fork, a 7-speed Shimano drivetrain, and a removable 280.8 Wh battery, at a list price of $549.99 that has spent much of 2026 discounted into the mid-$400s — 9to5Toys covered it at a $467 low in May 2026.

That price band puts it head-to-head with the anonymous-import tier of Amazon e-bikes, and that comparison is the whole story of this review: the Dolphin is not the most powerful or longest-range bike at its price. It is the one with a recognizable US brand behind it — the same Gotrax that built its name on electric scooters, with support staff you can call and distribution through Target, Walmart, and Best Buy. At the budget tier, where warranty ghosting is the #1 ownership risk, that pedigree is a real feature, not marketing.

The ride: friendly by design

Every choice on the spec sheet points at the same rider: someone who wants a normal-feeling bicycle with electric help, not a moped. The 26" wheels and step-through aluminum frame give it conventional city-bike geometry — easy to mount in street clothes, stable at urban speeds, familiar to anyone who has ridden a regular bike. Gotrax fits riders from 5'2" to 6'4" with an adjustable stem and seat, and rates the bike for riders up to 264 lb.

The 350 W rated motor is modest on paper, but at 20 mph (Class 2 — throttle and pedal-assist both capped) it's adequate for flat and gently rolling city terrain. GoEBikeLife's Michael Thompson summarized it as "a friendly, confidence-inspiring city e-bike" and scored it 9.0/10 against its own brief — with the smooth, predictable power delivery and the practical ~3.7 mph walk-assist "Boost Mode" among the specifics he praised. A front suspension fork takes the edge off potholes; dual mechanical disc brakes handle stopping.

Range reality: the small battery is the trade

This is the section to read before buying. The Dolphin's 280.8 Wh battery is roughly half the capacity of the sub-$500 class leaders on paper — and range claims follow suit: Gotrax claims 30+ miles at pedal-assist level 1 and about 15.5 miles on throttle alone (~5.5 hour recharge). Apply the usual real-world discount — higher assist levels, stops and starts, hills, a heavier rider — and you should plan around 10-15 real miles per charge in typical mixed city riding.

For the bike's actual mission — a 3-5 mile each-way commute, grocery runs, campus loops — that's genuinely enough, and the battery's removability means you charge a 6 lb pack at your desk, not a 50 lb bike in a hallway. But if your commute is 8+ miles each way, this is the wrong bike; look at bigger-battery options in our best e-bikes under $1,000 guide. Run your own numbers in our range calculator — the Dolphin's specs are prefilled.

Build, brakes, and the parts that show the price

At 49.6 lb the Dolphin is light for a budget e-bike (many fat-tire competitors run 65-77 lb), which matters for anyone who stores a bike up a step or two. The 7-speed Shimano drivetrain gives real gear range for pedaling beyond the motor's cutoff, and the cockpit adjustability (stem angle + seat height) is unusually generous at this price.

The compromises are the standard budget-tier ones, and they're the same ones Thompson flags: mechanical disc brakes rather than hydraulic (fine at Class 2 speeds and this weight, but budget for periodic cable adjustment), a minimalist accessory loadout (no rear rack or fenders in the box), and the 20 mph ceiling — riders who want to keep pace with 30 mph traffic need a Class 3 bike, which this deliberately is not. The battery system carries UL 2849 certification per GoEBikeLife's review — verify the mark on the current listing photos if indoor-charging rules apply to your building.

The ownership story — why the brand matters at $500

Gotrax backs the Dolphin with 365-day parts assurance and US-based support, and sells through major retailers — the exact infrastructure the grey-market tier lacks. Our catalog's own data makes the case: the Gotrax R1, the Dolphin's folding sibling, carries 650+ Amazon reviews largely because owners can actually reach someone when a controller or charger fails. The Dolphin's 430+ reviews at 4.4★ tell the same story on a newer listing.

If you were shopping the Jasion EB5 — for years the default cheap normal-looking e-bike on Amazon, now delisted — the Dolphin is the closest live equivalent in spirit: conventional geometry, big review base, real brand. The EB5 had double the battery; the Dolphin answers with the step-through frame, lighter weight, front suspension, and a support organization that answers the phone.

How it compares in our catalog

Against the Vivi MT26GUL (the other sub-$500 step-through we rate): the Vivi counters with cruise control and a bigger battery at a similar price, while the Dolphin answers with the stronger brand, lighter weight, wider adjustability range, and four times the review depth. Against the Gotrax R1: same brand trust, different shapes — the R1 folds for apartments and car trunks; the Dolphin rides better as a daily bicycle. Against anything in the anonymous-import tier claiming 1000 W and 50 miles for the same money: those numbers are usually the marketing kind, and the warranty usually isn't real. That's the choice the Dolphin exists to clarify.