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Goat Power Bikes Billy Goat SL vs Goat Power Bikes King Goat V3

These are two different machines from the same brand. The Billy Goat SL is a street-legal Class 2/Class 3 e-bike: 750W nominal, 25 MPH on pedal assist, 60+ miles of assist range, and it weighs little enough to ride like a bicycle. The King Goat V3 is a 179 lb, 72V high-performance EV with 8,500W peak and 65+ MPH in the 40Ah build, so it is not street-legal as a bike in most states and needs a motorcycle endorsement or private land. Owners rate the SL highly (4.9 average across 452 reviews) for brakes, tires and range. Buy the SL to commute legally and pedal; buy the V3 only if you want raw power and have a legal place to use it.

  • Choose the Billy Goat SL if you want a legal, pedalable commuter with 25 MPH assist, 60+ miles of range and hydraulic 4-piston brakes.
  • Choose the King Goat V3 if you want flagship power and speed (8,500W peak, 65+ MPH, 320 Nm) and have private land or a motorcycle license to use it.

Prices

  • Goat Power Bikes Billy Goat SL: $1,999.00 at Goat Power Bikes (last seen Nov 13)
  • Goat Power Bikes King Goat V3: $3,555.00 at Goat Power Bikes (last seen Nov 13)
  • Difference: the Goat Power Bikes Billy Goat SL is $1,556.00 cheaper than the Goat Power Bikes King Goat V3 at the latest prices (Nov 13)
Goat Power Bikes
The Billy Goat SL

Goat Power Bikes Billy Goat SL

The Billy Goat SL

$1,999.00at Goat Power BikesChecked Nov 13
See all prices and details
Visit Goat Power Bikes
Pros
  • Street legal as Class 2 and Class 3
  • 60+ miles of pedal-assist range
  • 4-piston hydraulic brakes and puncture-resistant INNOVA tires
  • Shimano 7-speed gearing for real pedaling
  • UL 2271 certified battery
Cons
  • 6–7 hour charge time
  • 1,000W peak is modest next to the V3
  • Rigid frame with no rear suspension
Goat Power Bikes
The King Goat V3

Goat Power Bikes King Goat V3

The King Goat V3

$3,555.00at Goat Power BikesChecked Nov 13
See all prices and details
Visit Goat Power Bikes
Pros
  • 8,500W peak and 320 Nm of torque in the 40Ah build
  • 65+ MPH top speed
  • 2,880 Wh battery with a 200+ mile dual-battery option
  • Inverted forks and upgraded rear suspension
  • 450 lb max rider weight
Cons
  • 179 lb total weight; 45 lb battery
  • Not street legal as an e-bike in most states
  • 34.7-inch seat height suits taller riders only
  • No real pedaling

What separates them

Goat Power Bikes Billy Goat SLGoat Power Bikes King Goat V3
Legal classClass 2 throttle (20 MPH) and Class 3 pedal assist (25 MPH); street legal in most states65+ MPH, far beyond e-bike classes; generally needs a motorcycle license and registration
Motor750W nominal, 1,000W peak, 70 Nm8,500W peak, 320 Nm in the 40Ah build (12,500W and ~400 Nm in the 62.5Ah version)
Battery and range52V 20Ah Samsung cells, UL 2271 certified; 35+ miles throttle, 60+ miles assist72V 40Ah, 2,880 Wh; optional second pack pushes total to 82.5Ah and 200+ miles
WeightLight enough to ride and pedal like a bicycle179 lb with battery; the battery alone is 45 lb
Pedals and drivetrainShimano 7-speed shifter with functional pedal assistNo meaningful pedaling; throttle-driven high-performance EV
Brakes and suspensionKarasawa 4-piston hydraulic discs, rigid frame, 20-inch fat tiresDOT-4 Karasawa hydraulic brakes, inverted front forks, upgraded rear suspension
Charge time6–7 hours on the included 3A charger4–5 hours
Rider fitStep-over frame sized for everyday riders34.7-inch seat height and 450 lb max rider weight; tall and heavy

Price history

  • Goat Power Bikes Billy Goat SL: lowest $1,999.00 on Nov 13 at Bolton Ebikes.
  • Goat Power Bikes King Goat V3: lowest $3,555.00 on Nov 13 at Bolton Ebikes.

Prices at every store

Goat Power Bikes Billy Goat SL

  • Goat Power BikesNew

    In stockReturn policy

    $1,999.00Checked Nov 13
    Visit Goat Power Bikes
  • Bolton EbikesNew

    In stock

    $1,999.00Checked Nov 13
    Visit Bolton Ebikes
All 2 stores and price history →

Goat Power Bikes King Goat V3

  • Goat Power BikesNew

    In stockReturn policy

    $3,555.00Checked Nov 13
    Visit Goat Power Bikes
  • Bolton EbikesNew

    In stock

    $3,555.00Checked Nov 13
    Visit Bolton Ebikes

Also available at

  • eBike HaulCheck price at eBike Haul
All 2 stores and price history →

Specs compared

SpecGoat Power Bikes Billy Goat SLGoat Power Bikes King Goat V3
Charge time6-7 Hours For Full Charge4-5h
Motor power750W (1,000W Peak)—
Torque70NM—
Throttle top speed20MPH (Class 2)—
Pedal assist top speed25MPH (Class 3)—
Battery52V20AH Samsung Cells—
Charger58.8V/3A Charger—
Electric range35+ Miles—
Pedal assist range60+ Miles—
TiresINNOVA Puncture Resistant Tires (F/20x4, R/20x4…—
BrakesKarasawa 4-Piston Hydraulic Disc Brakes—
ShifterShimano 7 Speed Shifter—
Show all 23 specsShow fewer specs
SpecGoat Power Bikes Billy Goat SLGoat Power Bikes King Goat V3
Motor torque—320Nm
Peak power—8,500W
Top speed—over 65 MPH
Battery capacity—40 Ah
Battery voltage—72Vdc
Watt hour—2880WH
Weight including battery—179LBS
Battery weight—45LBS
Max rider weight—450LBS
Seat height

What reviewers say

Goat Power Bikes Billy Goat SL

Owners rate the Billy Goat SL 4.9 across 452 reviews, praising its range, brakes and build. The main complaints are the long charge time and less peak power than the V3 line.

What people mention
  • RangePraisedRiders report the pedal-assist range holds up well for long commutes and errands.
  • BrakesPraisedThe 4-piston hydraulic discs are called strong and confidence-inspiring.
  • BuildPraisedOwners describe the bike as sturdy and well put together.
  • Charge timeCriticisedA full charge takes 6-7 hours, which owners find slow.

Goat Power Bikes King Goat V3

What people mention
  • PowerPraisedRiders describe the V3 controller and revised gear ratio as giving stronger, smoother acceleration.
  • WeightCriticisedAt 179 lbs with a 45 lb battery, owners say it is hard to move around and park.
  • Seat heightCriticisedThe 34.7-inch seat height is called out as too tall for shorter riders.
  • RangePraisedThe optional tank-style battery extends range past 200 miles for long rides.

Questions and answers

Which is better for commuting?
The Billy Goat SL. It is street legal, light enough to pedal, and its 60+ mile assist range covers most commutes. The King Goat V3 is too fast and heavy for legal bike-lane use.
Which lasts longer?
The SL has fewer high-stress parts and a UL 2271 certified Samsung pack, so wear is gentler. The V3's bigger motor and battery put more load on tires, brakes and the controller, so expect more maintenance.
Is the King Goat V3 worth stepping up to?
Only if you need 65+ MPH and 320 Nm and have a legal place to ride it. For street riding the SL's legal speed, range and brakes cover the same trips with less weight and hassle.
Can I ride the King Goat V3 on bike paths?
No. At 65+ MPH and 179 lb it exceeds e-bike class limits, so most states treat it as a motorcycle or off-road vehicle. The SL's Class 2 and Class 3 modes are path-legal where e-bikes are allowed.
Which handles hills better?
The King Goat V3, by a wide margin: 320 Nm against 70 Nm. The SL still climbs well on assist with its 7-speed gearing, but it is a bicycle, not a motorbike.
Which is easier to store and transport?
The Billy Goat SL. The V3 weighs 179 lb with a 45 lb battery and ships in two boxes, so it needs a garage or ramp. The SL can go on a bike rack.

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34.7 Inches
Wheelbase—53 Inches