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HTR — TECHNICAL DOCUMENTATION

THE NUMBERS.

Every specification we hold, the legal classification of each machine, and what we have and have not verified yet. Revision A — August 2026.

01

UK LEGAL CLASSIFICATION

HTR sells two ranges under one badge, and they sit on opposite sides of UK law. Getting this wrong costs a rider a fine, six points and an uninsured vehicle, so we put it first rather than in the small print.

An electrically assisted pedal cycle (EAPC) is exempt from motor-vehicle law in Great Britain when it has pedals that propel it, a continuous rated power of 250W or less, and assistance that cuts off at 15.5 mph (25 km/h). Anything above that is a motor vehicle: it needs type approval, registration, tax, insurance, a licence and a helmet, and it cannot be used on a cycle lane or a bridleway at all.

MachineRated powerAssist cut-offClassificationPublic roadCycle lanePrivate land
Model 01 — the Jack250W continuous15.5 mphEAPCYesYesYes
Model 02 — the Jack Flash250W continuous15.5 mphEAPCYesYesYes
Model 03 — the Rover500WNone (25→45 km/h)Not an EAPCNoNoYes, with permission
Model 04 — the Nomad750WNone (25→45 km/h)Not an EAPCNoNoYes, with permission
Terrain Series — the honest version

The Rover and the Nomad ship with a 25 km/h software limit that the rider can lift to 45 km/h. That capability is the whole point of the machine off-road, and it is also exactly what disqualifies it from the EAPC exemption — a limiter you can remove is not a limiter in law. We do not sell these as road bikes, we do not offer a road-legal conversion, and we will not tell you it is fine because "everyone does it". Riders must be 18 or over.

02

MODEL 01 — THE JACK

THE JACK

Flagship commuter · Model 01

Road legal — EAPC
ClassificationEAPC — road legal in Great Britain
Motor36V rear hub, 250W continuous rated
Assistance cut-off15.5 mph / 25 km/h, pedal assist only
Battery36V 13Ah — 468Wh, removable and lockable in-frame
Range60±5 km on assistance; 80±5 km pedalling*
DrivetrainShimano 7-speed
BrakesDisc, front and rear
Tyres26 × 1.95 in
SuspensionSprung front fork
DisplayColour LCD, left bar, 5 assist levels
FrameHigh-carbon steel, non-folding
LightingFront light fitted
Weight27 kg net · 33.8 kg gross packed
Shipping carton132 × 23 × 71.5 cm, 1 per carton
Price£999 · launch offer £599, while promotion lasts
03

MODEL 02 — THE JACK FLASH

THE JACK FLASH

Folding commuter · Model 02

Road legal — EAPC
ClassificationEAPC — road legal in Great Britain
Motor48V hub, 250W continuous rated
Assistance cut-off15.5 mph / 25 km/h, pedal assist only
Battery48V 7.5Ah — 360Wh, removable
Range30±5 km on assistance; 40±5 km pedalling*
DrivetrainSingle speed
BrakesDisc, front and rear
Tyres14 × 2.125 in
SuspensionFront fork plus intermediate shock absorber
FrameHigh-carbon steel, folding
LightingFront light fitted
Weight24.35 kg net · 28.45 kg gross packed
Shipping carton130 × 22 × 63 cm, 1 per carton
ColourwayBlack / Graphite Grey
Price£799 · launch offer £449, while promotion lasts
04

MODEL 03 — THE ROVER

THE ROVER

Fat tyre · Terrain Series · Model 03

Off-road only — not an EAPC
ClassificationNot an EAPC. Private land and closed circuits only
Motor48V rear hub, 500W
SpeedSupplied limited to 25 km/h; rider-unlockable to 45 km/h
Battery48V 15.6Ah — 749Wh, the largest in the range
Range70±5 km on assistance; 80±5 km pedalling*
DrivetrainShimano 7-speed
BrakesDisc, front and rear
Tyres20 × 4.0 in fat knobbly, spoked rims
SuspensionSprung front fork · twin rear coil-overs
FrameHigh-carbon steel, non-folding
LightingFront headlight · rear brake light
AccessoriesBattery-shaped storage case standard · rear carrier optional
Dimensions170 × 69 × 117 cm
ColourwaysStealth Black · Black with tan-wall tyres
Price£1,399 · launch offer £1,049, while promotion lasts
05

MODEL 04 — THE NOMAD

THE NOMAD

Folding fat tyre · Terrain Series · Model 04

Off-road only — not an EAPC
ClassificationNot an EAPC. Private land and closed circuits only
Motor48V rear hub, 750W
SpeedSupplied limited to 25 km/h; rider-unlockable to 45 km/h
Battery48V 13Ah — 624Wh
Range60±5 km on assistance; 80±5 km pedalling*
DrivetrainShimano 7-speed
BrakesDisc, front and rear
Tyres20 × 4.0 in fat knobbly, five-spoke cast wheels
SuspensionSprung front fork · four-link rear with coil-over
FrameHigh-carbon steel, folding
Lighting & signalsHeadlight · rear brake light · left and right indicators · electronic horn
Dimensions176 × 72 × 122 cm · folded 100 × 52 × 76 cm
Weight36.3 kg net · 42.65 kg gross packed
Shipping carton141 × 27 × 66.5 cm, 1 per carton
ColourwaysStealth Black · Deep Navy
Price£1,199 · launch offer £949, while promotion lasts

Full prices shown; a launch offer is applied automatically at checkout while the promotion lasts. Free UK delivery on every bike. 0% finance is coming soon.

*All range figures are the manufacturer's, measured on a flat surface with a light rider in low assist. Real range on a British winter commute with hills will be lower. We publish the supplier's number and tell you that rather than quietly rounding it up.

06

BATTERY & CHARGING

Almost every e-bike fire reported in the UK traces back to a damaged pack, an incompatible charger or a conversion kit — not to a complete bike charged as designed. These rules are not decoration.

  • Use only the charger supplied with your bike. Chargers are matched to pack voltage and cell chemistry. A 48V charger on a 36V pack will overcharge it. Never buy a replacement from a marketplace listing.
  • Charge indoors, awake, and not across an exit. Not on a landing, not in a hallway you would have to escape through, not overnight while the house is asleep.
  • Charge between 10°C and 30°C. Charging a pack that has just come in off a freezing ride damages the cells. Let it come up to room temperature first.
  • Store between 30% and 60% charge. If the bike is going away for the winter, do not leave the pack full or flat. Top it to about half every couple of months.
  • Stop using a pack that has been dropped, crushed, soaked or swollen. Do not charge it, do not put it in household waste. Contact us and we will arrange collection.
  • Never open a pack or fit a third-party cell. It voids the warranty, your home insurance, and quite possibly your kitchen.

All packs are lithium-ion and are shipped under UN 38.3 transport rules. Packs are removable on the Jack and the Jack Flash, and carried in-frame on the Rover and the Nomad. Full charge from empty takes roughly 4–6 hours depending on capacity.

07

TORQUE FIGURES & SERVICE INTERVALS

Every HTR is inspected and torque-checked in the UK before it ships, and built up in full if you ask for it. These are the figures we use, and the ones to work to if you service it yourself. Use a torque wrench — a fat-tyre machine at 750W puts real load through a stem bolt.

Handlebar clamp bolts5–7 N·m
Stem to steerer5–7 N·m
Seat post clamp5–7 N·m
Saddle rail clamp8–12 N·m
Disc rotor bolts4–6 N·m, threadlocked
Brake caliper mount6–8 N·m
Front axle / thru-axle12–15 N·m
Rear hub-motor axle nuts30–40 N·m
Crank arm bolts35–40 N·m
Pedals into cranks35 N·m, greased threads
Folding hinge clampsHand-lever, checked before every ride
Before every rideBrake feel, tyre pressure, quick-release and fold-hinge levers closed, lights working
Every 250 kmChain lubricated, brake pad wear checked, spokes/rims trued or cast wheels inspected for cracks
Every 1,000 kmFull bolt torque check, gear index, brake bleed if hydraulic, hub bearing play
Every 12 monthsFull service — free for the first year on every HTR
Tyre pressure26 × 1.95: 45–65 psi · 14 × 2.125: 35–45 psi · 20 × 4.0 fat: 8–20 psi (run low for float, high for hard ground)
08

COMPLIANCE STATUS

This is a live checklist, not a certificate wall. We publish where each item actually stands, including the ones still open, and we update this page as the first batch clears inspection.

  • EN 15194 — EAPC safety standard (Jack, Jack Flash) Certification to be evidenced by the factory and verified against the physical sample before first sale. Open.
  • 250W continuous rating and 15.5 mph cut-off verified on the bench To be measured on the UK samples, not taken from the datasheet. Open.
  • UN 38.3 — lithium battery transport Required for air and sea freight; certificates held on file per pack type by the manufacturer.
  • BS 1363 UK plug on every charger To be confirmed on the delivered units. No two-pin adapters will be shipped. Open.
  • UKCA marking and Declaration of Conformity To be issued per model before first sale. Open.
  • Product liability insurance To be in force before the first bike is handed over. Open.
  • WEEE and Batteries Regulations registration Producer obligations for importing electricals and batteries into the UK. Open.
  • Terrain Series classified and labelled as non-road-legal Stated on the product page, in the basket, in this document and in the footer of every page.
09

WARRANTY & SUPPORT

Frame and fork2 years against manufacturing defect
Motor, controller, display2 years
Battery pack2 years, or 500 full charge cycles, whichever comes first
Wear itemsTyres, brake pads, chain, cables, grips — not covered
First annual serviceFree, at our partner workshop — location confirmed before first delivery
SparesStandard fittings wherever possible, so your local shop can help too
Returns14 days from delivery, under the Consumer Contracts Regulations — see our returns policy
Voids the warrantyOpening a battery pack, fitting third-party cells, using a non-supplied charger, altering the controller firmware on an EAPC, or using a Terrain Series machine on a public road
Supportjack@htr.life — a real person, not a ticket queue

Our returns and warranty policy, delivery policy and terms are published in full; the battery safety sheet comes with every bike. Nothing on this page limits your statutory rights under the Consumer Rights Act 2015.