BULLS E-Stream EVO AM 45 Electric Mountain Bike E Bike


The King is back by popular demand and better than ever- E-Stream EVO AM 45. This is a fully capable 150mm full suspension all mountain eMTB. Upgrades include Monkey Link connect, Nobby Nic 27.5 x 2.8 tires and 203mm Magura MT5e hydraulic disc brakes. Shimano XT and Rock Shox Yari will not disappoint. And of course it wouldn’t be the AM 45 if it didn’t have the Brose TF motor to give you a bike that exceeds 20mph.

Please be advised: check trail regulations before riding and always be courteous to other trail users.

  • Free Shipping to Lower 48 States
  • Free Assembly and Adjustments for 1 year after purchase at our 2 Los Angeles Locations (Culver City/Palms Area and Santa Monica)


Review from  ElectricBikeReview.com


Per Charge (optimal conditions)

90Nm of torque

37V 17.5Ah 650WV 

Lithium-Ion Battery

BULLS E-Stream EVO AM 45 Key Features

The BULLS E-Stream EVO AM 45 Electric Mountain Bike beautifully combines power, versatility, and comfort into a truly unique package that’s just as comfortable on outback fire roads as it is in the concrete jungle of city streets.

203mm Magura MT5e hydraulic disc brakes

Extra Stopping Power when you need it keeps you safe.

SR Suntour 44/30T Cranks

Lightweight strength for the rough terrain

Selle Royal Rampage Sport Seat

The right seat that provides comfort but won’t get in the way on the tougher terrain rides.

Quiet 350W Motor, 90Nm Torque

Quiet 350W motor with 90Nm of torque and assists up to 28mph is claimed the most advanced ebike system in the world

Removable Battery

The battery can be removed and charged externally or installed in the bike.

Double Drive

One of the most important features of Brose system which allows double drive. Owing to the additional front chainwheel, a 22-speed gears permits a more sporty eBiking experience.

11-speed Drivetrain

The 11-speed drivetrain with 11-gear cassette has proved to improve efficiency and ultimately power

Removable Powerful Battery

Perfectly integrated into the frame and easy to remove for external charging, it is currently the highest performing rechargeable battery in the market with 650w/37V/17Ah.

Tapered Steerer

This is semi-integrated headset with an inner diameter of 1 1/8″ at the top and 1.5″ at the bottom. This ensures best riding stability and excellent control head stiffness. The biggest shaft results in stiffer fork and frame as riding forces are spread more evenly thanks to a thicker head tube.

Shimano Shadow Plus Clutch

Shimano Shadow Plus clutch mechanism prevents the lower arm of the derailleur from pivoting forward as the chain is kept under considerably more tension. The benefits are many: less chain slap, fewer dropped chains, more stable and accurate shifting over rough terrain and ultimately a much better and quieter ride.

Thru-Axle Stiffness Advantage

The main advantages of the thru-axle system are stiffness and strength, which add together to a safer bike. It has a clear advantage on disc brakes over the traditional quick release as it allows for easier and more precise wheel mount/dismount operation.

148mm Rear Hub

At 148mm, the rear hub of the boost standard is wider than any conventional ones. Connected to the flatted spoke screen, they increase stiffness and stability of the wheel for even better handling.

Internal Cable Routing

Internally routed shifting and braking cables ensure a clean and elegant look while ensuring a better protection to all important cables

150mm Front Suspension Travel

The travel of front suspension is 150mm.

150mm Full Suspension Travel

The travel of full suspension is 150mm.

Tailored Chainstays

Higher frames require longer chainstays. The result is a much-improved climbing capacity, which is relevant in large frames. After all, the center of gravity clearly shifts backwards with a taller rider, specifically during the climb. Taller riders also need more space as they usually have longer feet and for the longer cranks to avoid touching the chainstays with their heels.

MonkeyLink compatible

MonkeyLink compatible – the magnetic mechanism allows the riders to add accessories in one-click.


Powerpack 37V/17.5Ah/650Wh
Modes Eco, Tour, Sport
Charging Time approx. 3.4hrs to 80%, approx. 4.5hrs to 100%
Battery Range 118 miles (single charge at the optimal condition)
Max. Speed 28mph

Frame 7005 Aluminium
Frame Size 41/44/49/54cm
Fork Rock Shox Yari RC Solo Air 150mm
Shock Rock Shox Deluxe RT 150mm
Drive Train Brose 350W 28mph
Rear Derailleur Shimano Deore XT RD-8000-DG-S, 11-speed, shadow plus
Front Derailleur Shimano Deore XT FD-M786DT
Shifters Shimano Deore XT SL-M8000
Crankset SR Suntour 44/30T
Chain KMC X11E
Cassette Shimano Deore XT CS-M8000-11, 11-40T
Brakes Magura MT5E hydraulic disc brakes 203/203mm
Handlebar BULLS
Stem Monkey Link
Seatpost BULLS
Saddle Selle Royal Rampage
Hubs Formula/Formula
Rims BULLS Eccentric 35
Wheel Size 27.5
Tires Schwalbe Nobby Nic Snakeskin TL-Ready, Addix 70-584 (27.x2.80)
Pedals Wellgo
Weight 50 lbs (approx.)


Why Buy From Us?

The Bike Shop California Advantage

Today there are many "online" ways to buy a bike: direct from manufacturer, Amazon, and many more.

However when purchasing a bike from The Bike Shop California, we not only sell you the bike at a great price, we can build the bike and service the bike for free*.

The experienced mechanics at The Bike Shop California physical locations(Palms/Culver City and Santa Monica) have been assembling and maintaining bikes to their peak performance for over 20 years. Its true, anybody can build a bike...but experienced mechanics build bikes better.

Experience the advantage of The Bike Shop California when you purchase a bike through us. In addition to purchasing your bike online, our 2 physical locations in the Los Angeles Area: Santa Monica and our beauitful new location in Palms Culver City and ready for walk in help when you need it.

We would love to help you find your perfect bike and keep it running smoothly for years to come.

Shipping, Delivery, or In Store Pick-Up

When you purchase a product online from The Bike Shop California, you have the option of getting your product in one of 3 ways: 

  1. 1. Assembled and Tested with store pickup at one of our two Los Angeles locations: The Bike Shop California in Palms/Culver city or Bike Shop Santa Monica on Main St. (Across from Urth cafe)
  2. 2. Assembly, delivery and e-bike tutorial available in Southern California starting at $50 (pricing varies depending on drive distance). 
  3. 3. Partially assembled and shipped via the Manufacturer. Shipping time can take up to 10 business days.

If the product is shipped direct from manufacturer, the product will be under the shipping rules and conditions of the Manufacturer.

Key Reasons to buy from us:

  1. Lifetime of Free Adjustments Ups After Purchase
  2. Price
  3. Free Professional Build and can deliver within the Los Angeles Area or offer pick up at either our Santa Monica or Culver City.

Why a pro building your bike can make a difference:

With years of experience, professionals know how to properly true a tires, adjust the tensions of the de-railer, shifters and brakes, and much more. The result is a smoother more secure bike.

White Glove Set Up

Enter your zip code to see if you're in the local Bike Shop White Glove Service area or near a nationwide Velofix service area for Bike Set Up!

Yes, setup service by Velofix is available at this location!

Yes, setup service by The Bike Shop California is available at this location!

While you can still buy a bike from us (if you are in the lower 48 states), both The Bike Shop California and Velofix do not perform set up services at this location.

That said, you can still follow our helpful videos and get the bike put together yourself..


Is shipping outside the USA 48 lower states possible?

We do not currently ship that far at this time.

How do electric bikes work?
E-bikes run on an electric motor that draws power from the lithium ion battery pack. Most electric bikes can be propelled forward by manually pedaling, using the throttle in addition to pedaling, or using just the throttle. Each Murf Electric Bike has all three modes built in.
What is the difference between Peddle Assist and Throttle mode?
Under Peddle Assist mode, there's 5 speed levels. Level 1 is the slowest and 5 is the fastest. The top speed is limited by rider. Under throttle model, just twist the throttle and you can go up to 20MPH without any strength.
How far can I travel on a single charge?
Depending on the model, you expect anywhere from a 25-40 mile range depending on your battery size. If you're lighter you will likely achieve the higher part of that range. We've tested our bikes many times to give you an accurate real world range. But things change depending on terrain, rider size, rider style, and various inclines. Our typical rider gets in the 30-35 mile range.
What are electric bikes used for?
An electric bicycle can be used for any activity a regular pedal bicycle is used, only with the added benefit of an easier commute due to the power assist feature. Our folding bikes can be stored in a trunk and light enough to be carried on public transportation. The range the battery offers is enough to plan a day trip to the beach or exploring mountain ranges. Also, by adding panniers (saddle bags) the bike can be used for shopping trips and can store two bags of groceries, a huge benefit for urban living. Whether you live near the beach, a small town or bustling metropolis, an electric bike is a perfect transportation solution.
Are electric bikes safe to ride?


At its core, electric bikes operate like a regular bicycle, which can reach similar speeds. Just like a non-electric bicycle, there are brakes that allow you to slow down and stop. Because electric bikes can travel faster with less effort, its important to be extra cautious as you adjust to the new speeds. Make sure to wear a helpmet at all times. Please follow all normal safety precautions that would follow with a normal bicycle. Always adhere to the rules of the road.



Can I take out the battery to charge?
Sure! If you have a wall outlet to let you charge with the battery sitting in the bike, that's perfect. But if not, you can take out the battery back home to make a charge. The battery weighs only 8-10 lbs depending on different capacity.
Can I ride in the rain?

Most e-bikes you can ride in the rain if the electrical components are designed to be water resistant (most are). After wet riding, don't forget to wipe LCD display and battery to make them dry, otherwise overnight moisture sometimes hurt those electric parts. Good maintenance makes your ebike keeps like new. 

Please don't ride in water and river which is deep to touch motor and controller box, which is generally located in the bottom of battery.

Does it need a lot of setup before I ride the bike?
You need to install front wheel and pedals after you receive the package. If you are not familiar with bicycle, it takes around 10 mins before first ride. If you are a bike professional, only 3 mins. To get an even smoother ride, a bike professional can make adjustments to brakes and tensions. Just like any vehicle, bikes run better when they are maintain properly.
When will my order be shipped?
Once you receive order confirmation by email or text, it takes us 1-2 business day(s) to prepare your order and you'll be notified after we ship out.
Do I need a suspension front fork?

When you inflate fat tires with a lower pressure, the tire is soft and can help absorb the shocks from road.  Some of the bikes do have a suspension fork for extreme of road riding, however this suspension might not be needed for city streets. Some suspension forks have a locking mechanism when not needed on city streets.

What is the Bike warranty?

Most manufacturer's provides a 1 year warranty from the date you receive your bike. Whatever problem you have with your e-bike, just contact us or the manufacturer by either email or phone. We will send parts to you when necessary and will provide guidance to make sure that you can solve most problems with your bike.

What's included in the package?

If you order a bike from us, you'll receive a package including: complete bike, pedals, charger, F/R reflectors, and 4 stickers of CIVIBIKES.

Tools are not included, though you only need a 15 mm wrench and allen key to assembly the whole bike.

If I order accessories, will they come together?
Your accessories will be shipped out together with your bike. Separate boxes will be used to provide a full protection for the aluminum accessories.
Is the bike pre-assembled?
Most part of the bike is pre-assembled, but you need to assemble front wheel, handle bar, pedal and head light(if applicable) to the bike, which will take 10-20 mins. You can check SETUP on our website to have a better understanding.