Billy Goat SL
The original fat-tire Billy Goat, now street-legal and locked — a Class 2 / Class 3 e-bike with a 750W (1,000W peak) motor, UL-certified 52V Samsung battery, full suspension, and Karasawa 4-piston hydraulic brakes. Same moped looks, road-legal in all 50 states.
Watch the Review
Full Video Review
Up Close
Detail Gallery
The Engineering
Built On Better Technology
Frame Technology
The same waterproof, full-suspension chassis — road-tuned.
Reinforced Aluminum Alloy Frame
The exact same stout, reinforced alloy frame as the full-power Billy Goat V3 — waterproof-rated and built to shrug off potholes, curbs, and daily commuting.
Full Front & Rear Suspension
A triple-clamp fork up front and an adjustable coil shock out back soak up chatter, potholes, and rough pavement for a plush ride.
Dialed To Your Weight
The rear shock has both compression and rebound settings, so you can tune the ride for your weight and the roads you ride.
Motor Technology
750W hub, 1,000W peak — street-legal locked.
750W Hub Motor (1,000W Peak)
A 750W-rated rear hub motor peaks at 1,000 watts and 70 Nm — smooth, torquey power that pulls away from every light while staying road-legal.
Class 2 + Class 3 Legal
Throttle tops out at 20 mph (Class 2) and pedal assist at 25 mph (Class 3), keeping you legal on bike paths and roads in all 50 states.
Locked, Not Watered-Down
You get the same premium Billy Goat build and ride quality — just capped to legal speed limits, so you can ride it anywhere without worry.
Battery & Power
52V UL 2271-certified Samsung pack.
52V 20Ah Samsung Battery
Built on premium Samsung cells and UL 2271 certified for safety — the certification you need for legal, insurable street use.
Real-World Range
Up to 60+ miles in pedal assist or 35+ all-electric — and a 2nd battery kit slots into the frame to nearly double your range.
~6–7 Hour Charge
The 20Ah pack refills in about six to seven hours on the 58.8V/3A charger, so it's ready to ride again by morning.
The Cockpit
Everything On One Screen
LCD Display + BIKEGO App (throttle ignition key required)
The Billy Goat SL runs off a bright LCD display that shows your speed, battery level, trip data, and pedal-assist level. Pair the BIKEGO app for optional turn-by-turn navigation right from the cockpit.
A handlebar remote runs your headlight high/low beam, LED turn signals, and horn. A throttle ignition key keeps it from turning on without you, and the rear wheel lock secures it whenever you park.
Find Your Fit
Size & Fittings
Billy Goat SL Geometry Shared Goat Frame
Will It Fit You?
- Seat height33" from ground
- L × W × H72.5 × 28.5 × 47"
- Weight95 lbs
- Weight limit450 lbs
- Min inseam27" (34"+ w/ seat ext.)
- Best forRiders 5'6" and up
This is a tall bike — the 33" seat height fits most riders with a 27" inseam or longer, and a seat extension is available for 34"+ inseams. Under 5'6"? Consider a lower-profile model like the Rev or a Mini Goat. Total length 72.5", width 28.5", height 47".
The Numbers
Full Specifications
Source: goatpowerbikes.com →⚡ E-System
🏍️ Performance
🔧 Suspension & Brakes
✨ Features & Options
The Bike Cave Verdict
First-Ride Verdict Coming Soon
We haven't thrown a leg over the Billy Goat SL yet — so we're not going to pretend we have. Once we've put real miles on it, this is where you'll find Ben's honest take: how it actually rides, how far the 52V pack really goes, how the Karasawa 4-piston brakes feel loaded up, and whether the street-legal lock is worth it. Check back after our test ride.
🔍 What we'll be testing
- Real-world range in pedal assist vs. all-electric
- Brake feel and stopping power fully loaded
- Ride comfort from the full suspension on rough roads
- How the street-legal 20/25 mph lock feels day to day
- Fit and comfort for taller and shorter riders
📋 What we already know from the spec sheet
- Fully street-legal — Class 2 + Class 3 in all 50 states
- UL 2271 certified 52V Samsung battery
- Same reinforced frame & full suspension as the Billy Goat V3
- On sale now at $1,999 (was $2,099)
Kit it out
Accessories made for the GOAT Power The Billy Goat SL
All Goat Power accessories (7 matched) →Goat Power builds these for this bike. Fitment comes from Goat Power's own product listings, not our guesswork.
