Author Unica 26 2021-22 vs Trek Powerfly 4

Fuel	Electric	Electric
Motor	--	Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 20mph
Load Carrying Capacity	--	Combined weight of bicycle, rider, and cargo of 300 pounds (136 kg)
Top Speed	--	32 kmph
Speed	21	--
Battery	--	Bosch PowerTube 500
Charger	--	Bosch compact 2A (100-240V) charger
Controller	--	Bosch Purion
Frame	Alloy 6061 26" (L)	Alpha Platinum Aluminum, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148, 12 mm thru axle
Stem	ZOOM alloy	Size : XS - Bontrager alloy, 31.8 mm, Blendr compatible, 7 degree, 50 mm length Size : S, M - Bontrager alloy, 31.8 mm, Blendr compatible, 7 degree, 60 mm length Size : L, XL - Bontrager alloy, 31.8 mm, Blendr compatible, 7 degree, 70 mm length
Handle Bar	Steel 20 mm 640 mm	Size : XS, S - Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width Size : M, L, XL - Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Fork	Front :RST Capa 26 T (80 mm)	SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44 mm offset, Boost110, 15 mm thru axle, 120 mm travel
Seatpost	alloy (31.6)	Size : XS, S - Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length Size : M - Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length Size : L, XL - Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
Grip	AUTHOR high density foam	Bontrager XR Endurance Comp, lock-on
Crankset	--	FSA Bosch CK-220, 36T ring, 165 mm length
Pedals	Resin	VP-536 nylon platform
Chain	KMC Z7	KMC X10, 10 speed
Shifters	SHIMANO (21)	Shimano Deore M4100, 10 speed
Saddle	AUTHOR	Bontrager Commuter Comp
Headset	--	FSA IS-2, 1-1/8'' top, 1.5'' bottom
Derailleur Front	SHIMANO TY500 (34.9)	--
Derailleur Rear	SHIMANO TY500	Shimano Deore M5120, long cage
Hub Front	--	Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148, 12 mm thru axle
Hub Rear	QUANDO 36 holes	Formula DC-511, 6-bolt, Boost110, 15 mm thru axle
Spoke	Steel	14g stainless steel
Cassette	--	Shimano Deore M4100, 11-46, 10 speed
Bottom Bracket	VP COMP cartridge	--

Front	AUTHOR Speed Master 26" × 2.00"	Bontrager XR3 Comp, wire bead, 30tpi, 29 x 2.30''
Rear	AUTHOR Speed Master 26" × 2.00"	Bontrager XR3 Comp, wire bead, 30tpi, 29 x 2.30''
Wheel / RIM	Rims :alloy 36 holes	Bontrager Connection, double-wall, 32-hole, 20 mm width, presta valve

Front	TEKTRO V	Tektro HD-M275 hydraulic disc Brake Rotor : Tektro, 6-bolt, 203 mm
Rear	TEKTRO V	Tektro HD-M275 hydraulic disc Brake Rotor : Tektro, 6-bolt, 203 mm
Brake Lever	SHIMANO	--

Front	--	--
Rear	--	--

Colors

--

Lithium Grey/Trek Black Factory Orange/Lithium Grey Matte Solid Charcoal/Matte Miami

Length	--	--
Weight	13.4 kg	23.37 kg

Features	--	- Removable Integrated Battery - Bosch Performance Line CX motor - Rack Mounts - Rear Kickstand Mount - Alpha Platinum Aluminium
Additional Details	SIZE :16", 18" HEAD PARTS: PRESTINE 1-1/8" CHAIN WHEEL :PROWHEEL 42-34-24 teeth 170 mm cranks FREE WHEEL:SHIMANO MF-TZ510 14-34 (7)	--