Opus E-Big City ST vs Rad Power Bikes RadRunner 1

Fuel	Electric	Electric
Motor	Shimano STePS motor E-5000 250W	--
Range	--	25-45+ miles per charge (estimate)
Maximum Torque	40 NM	--
Battery	Shimano E-8014 418Wh 36V 11.6Ah battery	48V, 14 Ah (672 Wh) with Lithium NCA 18650 Samsung 35E cells, rated for 800 charge cycles
Charger	--	48V, 2 Amp Rad Power Bikes smart charger, operates on both 110V and 230V AC power outlets
Display	SC-E5000 Switch with integrated display	Intuitive LED display that shows battery charge level, pedal assist level, and light indicator
Frame	Meta 30 aluminum	6061 aluminum Size : 18"
Stem	Opus Silver	50 mm + 30º (15 mm rise)
Handle Bar	Opus Bronze 25 mm rise	Aluminum high rise, 660 mm wide, 10" rise Width : 27" Reach : 20" Height : 45"
Fork	Aluminum tapered 1-1/2 to 1-1/8 in	Rigid steel
Seatpost	Opus Silver 31.6 x 350	390 mm x 27.2 mm Clamp : Quick release Diameter : 27.2 mm
Grip	Velo ERGO dual density	Durable ergonomic rubber
Crankset	Shimano STePS	53T, 170 mm forged alloy, dual-sided aluminum bashguard Length : 170 mm
Pedals	--	Assist : Intelligent 4 level pedal assist with low profile cadence sensor Wellgo composite platform with reflectors, CrMo axle, standard 9/16" x 20 TPI threading
Chain	KMC E9 EPT	KMC Z7
Shifters	Shimano Alivio 9	--
Saddle	Opus E-CITY	Exclusive Rad Power Bikes moped-style, integrated steel seat post, fixed angle
Headset	FSA Orbit integrated sealed	Semi-integrated, 1-1/8" straight steerer tube
Derailleur Front	--	Single speed chain tensioner
Derailleur Rear	Shimano Alivio 3100 Shadow	Single speed chain tensioner
Hub Rear	Formula/Shimano	--
Spoke	--	12-gauge stainless steel, black
Cassette	Shimano 11-36	--
Bottom Bracket	Shimano STePS E-5000	--

Front	Kenda Kwick Seven.5 27.5 x 2.4	Exclusive Rad Power Bikes by Kenda K-Rad 20" x 3.3", K-Shield puncture-resistant liner
Rear	Kenda Kwick Seven.5 27.5 x 2.4	Exclusive Rad Power Bikes by Kenda K-Rad 20" x 3.3", K-Shield puncture-resistant liner
Wheel / RIM	Weinnman U32 TL	Double wall, 36H

Front	Shimano BR-MT201 hydraulic disc	--
Rear	Shimano BR-MT201 hydraulic disc	--
Brake Lever	Shimano BL-MT201	Aluminum alloy comfort grip levers with motor cutoff switch and integrated bell

Front	--	--
Rear	--	--

Colors

Stealth Black

--

Length	--	1701 mm
Height	--	419 mm
Weight	19.7 kg	29 kg
Seat Height	--	927
Wheelbase	--	1117 mm

Features	- Low step-through frame for everyone to enjoy - Lightweight 6061 aluminum Fork - Shimano 1x9 drivetrain - Shimano MT201 hydraulic disc brakes - Shimano STePS E-5000 motor and E-8014 418Wh semi-integrated battery	Lights Front : LED headlight Rear : Integrated taillight with brake light and flash mode - Puncture-Resistant Tires - Single-Speed Drivetrain - LED Control Panel - Integrated Rear Rack - Rigid Front Fork - Integrated Brake Light
Additional Details	Chainrings : 38	Controller : 48V, 750W Hub motor : 750W brushless Bafang geared hub motor with 80 Nm of torque, 5:1 planetary gear reduction Throttle : Half twist throttle Wiring : Water resistant connectors and wiring harness Brake Calipers : Tektro Aries (MD-M300) Freewheel : DNP 16T single speed Brake Pad Material : Organic compound Gearing : Single speed, 16-53 Brake Rotors : Tektro 180 mm front and rear Fenders : Optional Kickstand : Dual leg steel, spring loaded Racks Front : Optional Rear : Integrated, 120 lb carrying capacity, 25.5 mm tubing diameter Recommended Rider Heights : 4'11" - 6'2" Dropout Width Front: 135 mm Rear: 167 mm Max Tire Width : 3.3" Payload Capacity : 136 kg Chainstay : 20.2" Headtube : 7.3" Bottom Bracket Shell Width : 100 mm Square Taper Bottom Bracket Seat Tube Length : 18"