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The K9 4+
A non-folding trike with a 250 lb rider limit.
- Motor
- 500W · 45 Nm
- Battery
- 614 Wh
- Range, claimed
- 20-30 miles depending on load and terrain
- Top speed
- 20 mph
- Folded
- Doesn't fold
- List price
- $6,599
Available at
This goes to Bunch Bikes's own page for this model. We earn nothing from it.
✓ Specs checked Sep 28, 2026against bunchbike.com · sources for each spec · 1 conflicting figure
Our scores
Heavy-rider fit30 / 100
Ranks 27th of 60 scored · see the top 10
Out of 100, from published figures only. How we score
Set your height and weight. We compare them with the limits Bunch Bikes publishes.
Height
5′6″
168 cm
Weight
180 lb
82 kg
Rider height
5′2″ min6′6″ max
Weight and load
Rider 250 lbTotal 600 lb
Step-over
Bike: 168 lb
Specifications
Fit
- Step-over height
- Not published by brandbunchbike.com ↗ · checked Sep 28, 2026
- Rider height
- 5′2″–6′6″157–198 cmbunchbike.com ↗ · checked Sep 28, 2026
- Seat height
- 29.5-39.5 in (measured from bottom of pedal stroke)bunchbike.com ↗ · checked Sep 28, 2026
- Rider limit
- 250 lb113 kgbunchbike.com ↗ · checked Sep 28, 2026
- Total load
- 600 lb272 kg · rider plus cargobunchbike.com ↗ · checked Sep 28, 2026
- Seats
- 2Brand publishes conflicting figures: All K9 bikes also ship with two seatbelts for humans' (What's Included) · Seat Belts: Four 3-point seat belts included' (Technical Specifications, shared template). We use the figure from the more specific source.bunchbike.com ↗ · checked Sep 28, 2026
Motor
- Rated power
- 500Wbunchbike.com ↗ · checked Sep 28, 2026
- Peak power
- Not published by brandbunchbike.com ↗ · checked Sep 28, 2026
- Torque
- 45 Nmbunchbike.com ↗ · checked Sep 28, 2026
Battery
- Capacity
- 614 Whstated by brandbunchbike.com ↗ · checked Sep 28, 2026
- Voltage and amp-hours
- 48V · 12.8Ahbunchbike.com ↗ · checked Sep 28, 2026
- Battery weight
- Not published by brandbunchbike.com ↗ · checked Sep 28, 2026
Range and speed
- Claimed range
- 20-30 miles depending on load and terrainbunchbike.com ↗ · checked Sep 28, 2026
- Top speed
- 20 mph32 km/hbunchbike.com ↗ · checked Sep 28, 2026
- E-bike class
- Class 2 (not stated by brand)has a throttlebunchbike.com ↗ · checked Sep 28, 2026
Size and folding
- Folds
- Nobunchbike.com ↗ · checked Sep 28, 2026
- Folded size
- Doesn't foldbunchbike.com ↗ · checked Sep 28, 2026
- Weight
- 168 lb76 kgbunchbike.com ↗ · checked Sep 28, 2026
- Wheels
- 20 in front (x2), 24 in rearbunchbike.com ↗ · checked Sep 28, 2026
Brakes and drivetrain
- Brakes
- Tektro Auriga E-Twin+ E545/E540 hydraulic disc, 180 mm rotorsbunchbike.com ↗ · checked Sep 28, 2026
- Parking brake
- Yesbunchbike.com ↗ · checked Sep 28, 2026
- Gears
- 7-speed Shimano (Tourney derailleur, Altus shifter)bunchbike.com ↗ · checked Sep 28, 2026
- Rear differential
- Not published by brandbunchbike.com ↗ · checked Sep 28, 2026
- Reverse
- Not published by brandbunchbike.com ↗ · checked Sep 28, 2026
Comfort and safety
- Suspension
- None stated (single gas-spring steering damper only)bunchbike.com ↗ · checked Sep 28, 2026
- Certifications
- UL 2271 and UL 2849; frame, stability and braking tested to DIN 79010bunchbike.com ↗ · checked Sep 28, 2026
Documents
Bunch Bikes The K9 4+ manuals and PDFs
A PDF disagrees with the product page. The 2024 manual gives a 350 lb total limit and a 220 lb cargo box. The product page says 600 lb total and 400 lb cargo. The spec sheet above uses the product page.
- Owner's manualBunch Bike 4.0 User ManualPDF · from bunchbike.com · covers The Original / K9 / Preschool 4 and 4+ · 4.0 Version 2024-02-23
Files hosted by the brand, found Sep 28, 2026. The spec sheet above comes from the brand's product page.
Legal in your state
Can I ride it where I live?
Bunch Bikes doesn't state a class; by its figures it would be Class 2, with a 20 mph top speed.
✓ E-bike (class not stated) in California
throttle, 20 mph
- License, registration
- No driver's license, registration, license plate or insurance is needed for a legal e-bike or e-trike, and it is not a motor vehicle.
- Helmet
- Riders and passengers under 18 must wear a bicycle helmet on any bike, including an e-bike.
- Minimum age
- Riders must be 16 or older to operate a Class 3. State law sets no minimum age for Class 1 or 2, but pilot laws let San Diego County and Marin County set local limits, listed under local rules below.
- Where you can ride
- E-bike riders have the same road rights and duties as bicyclists, including use of bike lanes.
Last verified Sep 2026 · Read the statute ↗ · Full California guide · Not legal advice.
⚠ Not covered by the e-bike law
New Jersey's e-bike law leaves trikes out. See what that means for trikes below.
- License, registration
- Riders 17+ need a valid driver's license of any class or a moped (e-bike) license/permit; riders 15-16 need a moped (e-bike) license or permit; bike-share renters 16+ are exempt.
- Helmet
- Motorized bicycle riders of every age must wear an approved helmet.
- Minimum age
- No one under 15 may ride a low-speed e-bike or motorized bicycle.
- Where you can ride
- Motorized bicycles may not use interstates, median-divided highways, roads posted over 50 mph, or the GSP/Turnpike/AC Expressway.
Last verified Sep 2026 · Read the statute ↗ · Full New Jersey guide · Not legal advice.
✓ E-bike (class not stated) in Florida
throttle, 20 mph
- License, registration
- No driver license needed for any e-bike class.
- Helmet
- Riders and passengers under 16 must wear a bicycle helmet; no state helmet rule for 16+.
- Minimum age
- No statewide minimum age, but since July 1, 2025 cities/counties may set minimum ages and require riders to carry government photo ID.
- Where you can ride
- You may ride anywhere a regular bicycle is allowed, including streets, shoulders, bike lanes and multi-use paths.
Last verified Sep 2026 · Read the statute ↗ · Full Florida guide · Not legal advice.
✓ E-bike (class not stated) in New York
throttle, 20 mph
- License, registration
- No driver's license, registration or insurance is needed for a legal Class 1-3 e-bike.
- Helmet
- All Class 3 riders must wear a helmet; for Class 1 and 2 no state helmet rule applies to adults (localities may require helmets).
- Minimum age
- Riders must be at least 16.
- Where you can ride
- E-bikes may be ridden on roads with a posted speed limit of 30 mph or less, and in bike lanes; Class 3 only in New York City.
Last verified Sep 2026 · Read the statute ↗ · Full New York guide · Not legal advice.
Compare with
Bunch Bikes The Original 4+
| This trike | The Original 4+ | |
|---|---|---|
| Step-over | Not published | Not published |
| Total load | 600 lb | 600 lb |
| Weight | 168 lb | 168 lb |
| Top speed | 20 mph | 20 mph |
Compare with
Christiania Classic Straight Cargo Trike (Mid Drive)
| This trike | Classic Straight Cargo Trike (Mid Drive) | |
|---|---|---|
| Step-over | Not published | Not published |
| Total load | 600 lb | 520 lb |
| Weight | 168 lb | 100 lb |
| Top speed | 20 mph | 15.5 mph |
