The verdict
The Burromax TT350R (VoltRipper Score 75, ~$699.95) is the lithium step up from the budget SLA minis — the same full-suspension, disc-braked, two-speed formula as the TT250, but with a 24V lithium pack that charges in ~3.5 hours, claims ~20 miles, and pushes top speed to 17 mph. It earns a 75, level with the cheaper lead-acid TT250, which is the more interesting result. The lithium pack is a real advantage. But our Score weighs value, and the TT250 delivers most of the same chassis for $300 less, which cancels it out. The TT350R's case is convenience: faster charging, more range, less weight.
The honest framing: this is the "I don't want to wait 8 hours to charge" bike. If the SLA TT250's one weakness — slow charging and modest range — is a dealbreaker, the TT350R fixes exactly that, and little else.
Who it's for — and who should skip it
Buy it if you have a rider of 12 or older (Burromax's rating) and the TT250's sealed-lead-acid pack is the sticking point — you want to ride again the same afternoon, go farther, and carry less weight. The 180 lb rider limit makes it a genuine youth bike a bigger kid (or a light adult) can use.
Skip it if budget is the priority — the TT250 gives you the same suspension, disc brake, and two-speed setup for $300 less, and it matches this bike on our board, though it is out of stock at Burromax as of 2026-09-14. Skip it too if you want more speed: the TT750R runs 26 mph for $295 more, but Burromax rates it 16+.
What you actually get
The TT350R runs a 24V / 350W motor off a 24V, 10Ah lithium pack — about 240 Wh — through a chain, topping out at 17 mph with a two-speed selector that drops it to about 8 mph in low mode. It keeps the TT250's good chassis: full suspension (front forks + adjustable rear mono-shock), a rear disc brake, and 12.5-inch knobby tires. The lithium pack is the difference — Burromax claims up to 20 miles at a 100 lb rider and a ~3.5-hour charge, and it weighs about 50.7 lb with a 21-inch seat.
Where it wins, where it costs
Where it wins: the lithium battery. Compared to the SLA TT250 it charges more than twice as fast, claims nearly double the range, and rides lighter — with a bump to 17 mph and a 180 lb limit on top. For a family that rides often, "charge in an afternoon" is the feature that matters.
Where it costs you: the price-to-capability math. At $699.95 you're paying $300 more than the TT250 for a convenience upgrade, not a capability leap — the motor and chassis are close. That's why it scores no higher than the TT250. It's still a 12.5-inch-wheel mini a full-size teen outgrows, Burromax is a smaller brand, and there's no app or display and no stated brake actuation.
Safety and age
Burromax rates the TT350R 12+, and at 17 mph it's quick — start a newer rider in low mode (8 mph), keep a helmet and full gear on every ride, supervise, and keep it off-road; like every bike on our board it's not street-legal (why). Use the two-speed selector to match the speed to the rider.
How it compares
| Bike | Price | Top speed | Battery | Suspension / brakes | Score |
|---|---|---|---|---|---|
| Burromax TT350R | $699.95 | 17 mph | 240 Wh lithium | Full / rear disc | 75 |
| Burromax TT250 | $399.95 (out of stock) | 14 mph | 168 Wh SLA | Full / rear disc | 75 |
| Razor MX650 | $699 | 17 mph | 432 Wh SLA | Full / dual disc | 73 |
| Burromax TT750R | $995 | 26 mph | 475 Wh lithium | Full / hydraulic | 79 |
At $699.95 the honest rival outside the family is the Razor MX650: $699 and the same 17 mph, but a heavy SLA pack (which is why the lithium TT350R's 75 out-scores the SLA MX650's 73) — and its own family. Look down to the TT250 to save money on the SLA version, or up to the TT750R for real speed.
Bottom line
The Burromax TT350R is the lithium answer to the budget mini's one weakness — the same good chassis as the cheaper TT250, with a battery that charges in an afternoon and goes farther, for $300 more. It scores 75, level with its cheaper SLA sibling, because our Score rewards value and the TT250 is the value pick — but if slow charging is your dealbreaker, the lithium pack here is exactly what you're paying for. Undecided between the two, or eyeing the faster TT750R? Our kids guide and the Find Your Ride configurator will sort it out.
Correction, 2026-09-14: this review said the TT350R was rated from age 9, quoted a stale price, and compared its Score against stale figures. Burromax rates it 12+; our record was corrected on 2026-09-13, and this page should have followed then.
VoltRipper is spec-verified and data-driven — we do not claim hands-on testing of this bike. Specs and prices are cross-checked against the sources listed above and re-verified regularly; real-world figures are our own estimates, clearly labeled.
FAQ
Is the Burromax TT350R worth it over the TT250?
It's worth it if you value the lithium battery — that's the real upgrade, not the modest extra speed. The TT350R swaps the TT250's heavy sealed-lead-acid pack for 24V lithium, which cuts charge time to about 3.5 hours (from ~8), lifts claimed range to about 20 miles (from ~12), drops weight, and nudges top speed to 17 mph. You pay $300 more for that, and the TT250 is out of stock at Burromax as of 2026-09-14. If short rides between long overnight charges are fine and you can find a TT250, save the money; if you want to ride again the same afternoon and go farther, the TT350R's lithium pack is the reason to pay more.
How fast is the Burromax TT350R and what age is it for?
Burromax rates it 12 and up on its own product page. It has a two-speed selector: about 8 mph in low mode and 17 mph in high. The TT250 carries the same 12+ rating, so the step up from it is in battery, speed and the 180 lb rider limit, not in age. At 17 mph it's quick, so start a newer rider in low mode, supervise, and match the speed to skill.
Burromax TT350R vs TT750R — which should I buy?
Buy the TT350R (~$699.95) for a lighter, cheaper lithium mini at 17 mph; step up to the TT750R (~$995) for a genuinely faster 26 mph bike with a bigger 475 Wh pack, hydraulic brakes, and a 250 lb rider limit that lets an adult ride it too. The TT750R scores higher on our board, 79 to 75, because that hardware is a lot of bike for $995. But Burromax rates the TT750R 16+ and the TT350R 12+, so for a rider under 16 the TT350R is the one to buy; if you want the most capable mini and a bike a parent can also use, the TT750R.
Does the Burromax TT350R have a lithium battery?
Yes — that's the defining feature and the reason for the 'R.' It uses a 24V, 10Ah lithium pack (about 240 Wh), which is why it charges in ~3.5 hours, claims ~20 miles, and weighs less than the sealed-lead-acid TT250. If you see a plain 'TT350,' confirm it's the TT350R lithium model, because the lithium pack is the whole point of paying more than the SLA TT250.