Magnum Premium II Review

Magnum Premium Ii Electric Bike Review
Magnum Premium Ii
Magnum Premium Ii Folded
Magnum Premium Ii 48 Volt 13 Amp Hour Battery Pack
Magnum Premium Ii Das Kit C6 Display And Button Pad
Magnum Premium Ii Shimano Revoshifter Faux Leather Grips
Magnum Premium Ii Rst Carve Spring Suspension Fork 80mm
Magnum Premium Ii Tektro Hydraulic Disc Brakes 160mm Rotors
Magnum Premium Ii Wellgo Folding Plastic Pedals Selle Royal Lookin Large Gel Saddle
Magnum Premium Ii 8 Speed Shimano Acera 11 32t Cassette
Magnum Premium Ii Alloy Rear Rack Independent Spanninga Light
Magnum Premium Ii Prowheel 52t Chainring 12 Magnet Cadence Sensor
Magnum Premium Ii Folding Electric Bike
Magnum Premium Ii 2 Amp Ebike Charger Metal Plug
Magnum Premium Ii Stock High Step Folding Black
Magnum Premium Ii Stock Step Thru Folding Black
Magnum Premium Ii Electric Bike Review
Magnum Premium Ii
Magnum Premium Ii Folded
Magnum Premium Ii 48 Volt 13 Amp Hour Battery Pack
Magnum Premium Ii Das Kit C6 Display And Button Pad
Magnum Premium Ii Shimano Revoshifter Faux Leather Grips
Magnum Premium Ii Rst Carve Spring Suspension Fork 80mm
Magnum Premium Ii Tektro Hydraulic Disc Brakes 160mm Rotors
Magnum Premium Ii Wellgo Folding Plastic Pedals Selle Royal Lookin Large Gel Saddle
Magnum Premium Ii 8 Speed Shimano Acera 11 32t Cassette
Magnum Premium Ii Alloy Rear Rack Independent Spanninga Light
Magnum Premium Ii Prowheel 52t Chainring 12 Magnet Cadence Sensor
Magnum Premium Ii Folding Electric Bike
Magnum Premium Ii 2 Amp Ebike Charger Metal Plug
Magnum Premium Ii Stock High Step Folding Black
Magnum Premium Ii Stock Step Thru Folding Black

Summary

  • A feature complete folding electric bike available in two frame styles, mid-step straight bar or curving step-thru, available in black or white, long telescoping seat post with adjustable suspension element, upgraded suspension fork with lockout and preload adjust, large comfortable Schwalbe tires, padded grips, and oversized gel saddle smooth out the ride
  • Folding ebikes tend to be lower to the ground, so the addition of reflective tires and front and rear LED lights help you stay visible, the wider tire design provides stability and custom aluminum alloy fenders keep you clean and dry in wet conditions, great cargo rack with standard tubing for clip-on panniers and bungee slots on both sides
  • Unique slim trigger throttle fits on the right side of the handlebar without crowding the twist-shifter or brake lever, hydraulic disc brakes with motor inhibitors provide powerful but easy stopping, sturdy cast rims won't go out of true but add a bit of weight, silverfish battery pack style is easier to repair and re-pack if necessary, large easy to read display panel
  • Keys must be left in the battery to activate the electronics and that leaves them open to snagging and jingling, heavier weight due to high capacity battery, powerful 500 watt motor, fenders, rack etc. both lights use disposable AA batteries vs. being wired in, no bottle cage bosses, higher price due to upgraded components like 8-speed 11-32 Shimano Acera drivetrain

Video Review

Introduction

Make:

Magnum

Model:

Classic 48

Price:

$2,049

Body Position:

Upright

Suggested Use:

Urban, Commuting, Travel

Electric Bike Class:

Throttle on Demand (Class 2), Speed Pedelec (Class 3)
Learn more about Ebike classes

Warranty:

1 Year Comprehensive

Availability:

United States, Canada, New Zealand, Israel

Model Year:

2019

Bicycle Details

Total Weight:

61.3 lbs (27.8 kg)

Battery Weight:

9.3 lbs (4.21 kg)

Motor Weight:

10.1 lbs (4.58 kg)

Frame Material:

6061 Aluminum Alloy

Frame Sizes:

15 in (38.1 cm)

Geometry Measurements:

Unfolded: 15" Seat Tube, 21.25" Reach, 14.5" Stand Over Height, 32.5" Minimum Saddle Height, 25.25" Width, 65" Length, Folded: 34.5" Length x 21" Width x 30" Height

Frame Types:

Step-Thru, Mid-Step, Folding

Frame Colors:

Satin Black with Blue Accents, Gloss White with Blue Accents

Frame Fork Details:

RST Carve Spring Suspension, 80mm Travel, 25mm Steel Stanchions, 100mm Hub Spacing, 10mm Threaded Axle with 15mm Nuts

Frame Rear Details:

135mm Hub Spacing, 12mm Threaded Axle with 18mm Nuts

Attachment Points:

Rear Rack Bosses, Fender Bosses

Gearing Details:

8 Speed 1x8 Shimano Acera Derailleur, 11-32 Tooth Nickel Plated Cassette

Shifter Details:

Shimano RevoShift Half-Grip Twist Shifter on Right

Cranks:

Prowheel SOLID, Aluminum Alloy, 165mm Length, 52 Tooth Chainring with Alloy Guide

Pedals:

Wellgo K20410, Folding Plastic Platform

Headset:

Neco, Threadless, Internal Cups, Straight 1-1/8"

Stem:

Aluminum Alloy, Folding, 240mm Base Height, Telescoping Height Adjustment (0mm to 120mm), 40mm Length, 25.4mm Clamp Diameter, One 10mm Spacer

Handlebar:

Aluminum Alloy, Low-Rise, 630mm Width

Brake Details:

Tektro Hydraulic Disc with 160mm Rotors, Dual-Piston Calipers, Tektro Levers with Motor Inhibitors

Grips:

Ergonomic, Faux Leather, Stitched

Saddle:

Selle Royal Lookin, Gel Saddle

Seat Post:

Aluminum Alloy, Suspension (40mm Travel, Preload Adjust), Flip-Up Saddle Clamp

Seat Post Length:

400 mm

Seat Post Diameter:

27.2 mm

Rims:

Aluminum Alloy, Double Walled, 40.4mm Outer Width

Spokes:

6 Forged Alloy Arms

Tire Brand:

Schwalbe Super Moto-X, 20" x 2.4" (62-406)

Wheel Sizes:

20 in (50.8cm)

Tire Details:

30-65 PSI, 2.0 to 4.5 BAR, Reflective Sidewall Stripes, Performance Line GreenGuard Puncture Protection

Tube Details:

Schrader Valve

Accessories:

Alloy Rear Rack with Pannier Blockers and Spring Latch (27kg 59.5lb Max Weight), Aluminum Alloy Fenders (70mm Width), Independent Spanninga GaLeo Headlight (2 AA Batteries), Independent Spanninga Rear Light (2 AA Batteries), Folding Support Bar on Bottom Bracket, Center-Mount Adjustable Kickstand, Steel Derailleur Guard, Optional Replacement or Second 13ah Battery ($550), Optional 14ah and 16ah Battery Upgrades

Other:

Locking Removable Seat Tube Mounted Battery Pack, 6 Mosfet 12 Amp Current Controller, 1.5 lb 2 Amp Charger, KMC Z-Chain

Electronic Details

Motor Brand:

Bafang

Motor Type:

Rear-Mounted Geared Hub
Learn more about Ebike motors

Motor Nominal Output:

500 watts

Motor Peak Output:

700 watts

Motor Torque:

80 Newton meters

Battery Brand:

Samsung, LG, Panasonic

Battery Voltage:

48 volts

Battery Amp Hours:

13 ah

Battery Watt Hours:

624 wh

Battery Chemistry:

Lithium Nickel Cobalt Manganese (Li-NCM)

Charge Time:

6.2 hours

Estimated Min Range:

25 miles (40 km)

Estimated Max Range:

55 miles (89 km)

Display Type:

Das-Kit C6, Fixed, Backlit, Monochrome LCD

Readouts:

Power Output Indicator (6 Ticks), Assist Level (0-6), Current Speed, Odometer, Timer, Trip 1, Trip 2, BMS Voltage, Battery Level (6 Bars)

Display Accessories:

Independent Button Pad (Power, Set, +, -), (Press Power Button for Display Backligt, Hold Minus Button for Walk Mode), 5 Volt 1 Amp USB Charging Port on Right Side of Battery Pack

Drive Mode:

Cadence Sensing Pedal Assist, Trigger Throttle (Sealed 12 Magnet Cadence Sensor)

Top Speed:

25 mph (40 kph)(20 MPH Throttle, Adjustable)


Written Review

To run the forums, host the website, and travel, I charge a universal service fee for my reviews. This in-depth review was sponsored by Magnum Bikes. My goal is to be transparent and unbiased with you, this video and writeup are not meant to be an endorsement of Magnum products. I welcome your corrections, additions, and feedback in the comments below and the Magnum electric bike forums.

Observations:

  • As its name suggests, this is the “premium” folding electric bike in the Magnum lineup. For a bit more money than the Magnum Classic, you get a higher capacity battery pack, hydraulic disc brakes, cast alloy rims, an upgraded suspension fork, and a nicer drivetrain with upgraded 8-speed cassette and Shimano Acera derailleur
  • The Magnum Premium 2 or “II” was originally called the Magnum Premium X. I’ve noticed that Magnum maintains their designs and opts for subtle upgrades and improvements year over year vs. complete redesigns, and this allows their batteries to be backwards compatible and for dealers to stock parts that work across many bikes… it’s part of what makes them reliable and supports their customer service channels

Pros:

  • I love that this bike comes in two frame styles and two colors, the standard mid-step with a straight bar as well as a deep wave step-thru that could be easier to approach and mount for people with knee and hip sensitivity
  • Powerful hydraulic disc brakes allow this bike to stop faster and with less hand effort. Both levers have motor inhibitors built-in so you get extra control. Given the smaller 20″ wheel size of this ebike, the 160mm rotor size is a good choice because they’re less likely to get bent than 180mm rotors when the bike is folded and transported
  • Awesome cast rims are much more durable than traditional spoked wheels, meaning they won’t bend or go out of true for heavier riders… this is a nice little upgrade, but it does increase the overall weight of the bike and take off some of the cushion that spokes offer as they bend slightly
  • Excellent drivetrain on this ebike, the alloy chain guide prevents drops when riding or folding, the eight speed drivetrain with Shimano Acera derailleur shifts easily and is more durable than Tourney (as seen on the Magnum Clasic), and the addition of a derailleur guard at the back will protect this derailleur if the bike tips or is laid on its side during folding and transport!
  • Really nice display for a folding ebike, many times the display and button pad will be combined and won’t swivel or be as large and easy to read as we see here… Magnum uses a lot of parts from Das-Kit, which I have found to be high quality and well designed. Even though the display is not removable, it does swivel easily to reduce damage and has a hard durable screen (replacements are like $110 if yours does break or get scratched up)
  • The slim trigger throttle design is exclusive to Das-Kit and fits neatly on the right side of the handlebar (where most people seem to prefer it), without crowding the twist shifter. I’ve seen many other companies using the Bafang trigger throttle that has to be moved to the left side of the handlebar due to shifter and brake mount clutter
  • Lots of comfort upgrades here! Check out the extra large gel saddle, padded grips, suspension fork with lockout, wide 2.4″ Schwalbe tires, and basic suspension seat post with compression adjust and flip-up saddle mount… these are welcome upgrades on any folding ebike because they tend to have smaller wheels with a higher attack angle that “collides” with bumps and obstacles vs. smoothly overcoming them
  • I grouped this ebike in with the Class 3 speed pedelec category, even though it only reaches ~25mph vs 28mph, which is quite thrilling on the smaller frame. Given the broader range of speeds, it’s wonderful to have an 11-32 tooth cassette vs. the 14-28 tooth I see on most competing products (and the Magnum Classic)
  • Excellent tires! Name brand Schwalbe Super Moto-X with reflective sidewall stripes for safety and Performance Line GreenGuard for puncture protection, very handy if you’re traveling with the bikes and not familiar with local terrain and thorny plant life. Also, the wider tire size provides more air volume for comfort and a bit of added stability (which is nice for smaller 20″ wheels)
  • The rear rack is pretty sweet, it provides a great platform on top for a trunk bag, uses standard gauge tubing for panniers on the sides, has a bungee slot at the base of both sides, and protrudes beyond the rear light so it won’t get busted as easily when the bike is folded and transported roughly
  • Given the higher capacity battery pack here, I like that they opted for a USB Type A charging port (located on the right side), that you can use to power accessories or as backup power when camping or adventuring!
  • Since the battery pack is not built into the frame of this ebike, the folding joint is narrower (less likely to bump your knees), and the external cables aren’t as likely to get pinched
  • Longer 400mm seat post and telescoping stem allow this folding electric bicycle to fit more riders, given the slightly shorter 165mm crank arms and fixed reach… it’s still not ideal for the tallest riders, but it’s a slight upgrade
  • Magnum sources their battery cells from Panasonic, LG, or Samsung to ensure that they’re high quality and will last for more cycles. To really care for a Lithium-ion battery pack, I’ve learned that you should avoid letting it fully discharge and try to store it in a cool, dry location, avoiding extreme heat and extreme cold
  • As soon as you turn that key and power up the display, the throttle is hot! You get full power at all levels of assist, which is nice for advanced riders… just be careful not to bump it, or the bike will take off. For people who are uncomfortable with this setup, the throttle can be disconnected
  • I like that the display loops from the very top to the bottom of assist levels, and in reverse! This saves you clicks on the button pad
  • The display has a password, but you can ask the shop or Magnum to help you get into the settings (hold + and -) so you could lower the top speed if you wanted (to maximize the battery range or provide a sense of safety)
  • Great network of dealers that assemble and support Magnum products, this adds a bit to the cost but makes the bike easier to own long term. I also want to call out the nicer 12-magnet sealed cadence sensor used here vs. external or less sensitive 6-magnet designs

Cons:

  • Minor complaint here, the brakes are great but the left lever doesn’t have an integrated bell like the mechanical levers used for the Magnum Classic folding ebike… instead, Magnum chose a basic flick bell that isn’t as sturdy or satisfying to ring
  • Both the headlight and tail light run off of independent AA batteries, which means they require independent activation and produce more waste over time… I’ve asked about this and found that some companies choose these to keep the cost down and reduce the potential for broken or pulled out wires (more common on folding ebikes), consider getting some rechargeable AA batteries
  • The silverfish style battery pack that Magnum has chosen for these ebikes is tried and true, it’s easier and cheaper to repair and repack, but requires the key to be inserted and turned to “on” in order to activate the bike electric systems. I find that this extra step can become tedious, the keys can jingle, and can even get snagged or bent more easily, but it does prevent tampering once you park the bike at the rack and remove the keys
  • Because the bike is feature-complete with sturdy aluminum alloy fenders, a metal rack, spring suspension fork, front and rear lights, and a higher capacity 624 watt hour battery pack, it does weigh more than most competing standard sized folding electric bikes. It weighs in at roughly 61.3lbs, but the 9.3lb battery pack is fairly easy to remove (and I’d recommend doing so before lifting)
  • Neither wheel offers quick release. This is a minor complaint, but it does make changing flat tires more time consuming, and requires that you bring some tools
  • Minor complaint here, the folding plastic pedals just don’t offer the stiffness and traction that folding alloy pedals (or non-folding pedals) will provide. Consider swapping them out or upgrading to something like this if you have larger feet
  • This folding ebike is a bit rear-heavy because of the motor and battery position, it’s also a bit less stealthy than some of the competing products out there now… but you get a more powerful motor and higher capacity battery as a result
  • There’s no magnetic clasp or rubber strap system to keep the bike folded, but there is a spring housed inside the main tube and several locking designs to make sure it doesn’t come unfolded when riding… if you’re folding and transporting, considering putting a towel between the frame and using some adjustable bungees like these to keep it from rattling around and getting scratched
  • As nice as the display panel is, it only shows 5 bars on the battery readout vs. 10 or even a percentage for more precision. Also, the looping feature on pedal assist levels can be annoying if you are used to clicking all the way up without looking down… because now you’ll have to look to make sure you don’t pass the highest assist level and loop back around
  • The kickstand is mounted near the center of the frame and just barely blocks the crank arm, which can cause pedal lock if you’re backing the bike up… also, there aren’t any bottle cage bosses on this frame. Considering using a trunk bag with a bottle holster like one of these instead
  • When riding across the really bumpy grass and dirt sections around 14:37 in the video review above, I could definitely hear the fenders, battery, and keys jingling around
  • I love how the stem telescopes up for taller riders but don’t stretch it too far or the brake lines, shifter cables and electronic wiring can get damaged as you steer

Useful Resources:

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