Ampler Curt vs Super73 S2

Fuel	Electric	Electric
Motor	48 V 250 W rear hub motor	Class-1 Mode Output: 750 watts nominal / 1200 watt peak Class-2 Mode Output: 750 watts nominal / 1200 watt peak (Default) Class-3 Mode Output: 750 watts nominal / 1200 watt peak Unlimited output: 1200 watts nominal / 2000 watt peak
Range	Up to 45-100 km depending on terrain and assist mode	--
Charging Time	2.5 hours for a full charge	6-7 hour / 3-4 hour
Engine Starting	Electric Start	--
Load Carrying Capacity	--	325lb
Seating Capacity	--	2-up seat, Optional: Single passenger Cafe Racer Style
Top Speed	25 kmph	32 kmph
Speed	--	Class-1 Mode: 20mph (throttle deactivated, pedal assist only) Class-2 Mode: 20mph Class-3 Mode: 28mph (throttle deactivated, pedal assist only) Unlimited Mode: 28mph +
Riding Modes	--	4 modes (ECO, TOUR, SPORT, SUPER)
Battery	48 V 336 Wh LG Li-ion battery	960 watt-hours, 21700 cells
Charger	3A Li-ion charger with Rosenberger magnetic plug	3A (6-7 hour charge time) / Optional: 5A (3-4 hour charge time)
Display	--	Transflective monochromatic LCD display with Bluetooth connectivity
Frame	Aluminum Alloy 6061, Double butted	6061 / 7005 Aluminum Alloy, 1-1/8" to 1.5" tapered head tube
Fork	Carbon 1 1/8"- 1 1/2", 12 mm Thru-axle	--
Crankset	Alloy 170 mm	125mm alloy crank arms, 36T chainring / Optional: 44T chainring for 10-speed gearing
Chain	Shimano/SRAM compatible 10-speed chain	--
Shifters	Shimano M6000 10-spd	--
Gear	--	Single-speed 16T rear cog /10 speed gearing (11-36T):
Derailleur Rear	Shimano Deore M6000	Single-speed fixed gear/ 10 speed Shimano Zee: optional accessory sold separately.
Hub Rear	--	9 x 135mm, steel axle
Cassette	CS-5700 11-28T	--
Chainrings	42 T Narrow/Wide	--
Sprocket	Front sprocket: CDX 60 tooth Rear sprocket: CDX 20 tooth	--
Bottom Bracket	--	120mm sealed bearing, square taper
Headlamp	Busch+Müller IQ2 Eyc LED	High output triple LED Halo
Taillamp	LightSKIN LED	Roxim R3E LED w/ brake light

Front	Continental Grand Prix 4-Season, 32-622 mm	20 x 4.5" Inner tubes: 20" x 4.5-5", angled valve stem
Rear	Continental Grand Prix 4-Season, 32-622 mm	20" x 5" BDGR All-Terrain Inner tubes: 20" x 4.5-5", angled valve stem
Wheel / RIM	--	Rims: 20" x 100mm alloy with lightening cutouts

Front	Shimano M6000 hydraulic disc	Tektro Hydraulic, 2-piston forged aluminum caliper, 180mm
Rear	Shimano M6000 hydraulic disc	Tektro Hydraulic, 2-piston forged aluminum caliper, 180mm

Front	--	Air Spring Fork with adjustable Pre-load, Compression, and Rebound damping, 120mm travel, 32mm stanchion
Rear	--	--

Colors

Matte Black

Galaxy Black Apollo White Hudson Blue

Length	--	--
Weight	14.3 kg	33 kg
Seat Height	--	310

Features	- Smartphone connectivity - Precise pedal torque-sensing motor control system	--
Additional Details	BOTTOM BRACKET : Sealed BB with a torque sensor	Rider's Height: 5'3" - 6'8". DC/DC Converter: 48v to 12v (120 watt) Turn Signals: Optional accessory sold separately Horn: Roxim ZHRK-01 w/ integrated horn switch Throttle: Thumb throttle
Accessories	Bike lock Additional charger Adapter for trailer mounts	--