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How To Set up Motor On A Mountain Bike In 8 Easy Steps

Mountain bikes are fascinating machines, aren’t they? You’ll be able to trip them on the roughest terrains and benefit from the thrill. However being a mountain biker, I’ve all the time had the itch to take issues to the following stage. How did I do this? Nice query! I put in a motor. And I like the additional energy I get from the torque.

It even provides you the additional kick you would possibly have to climb steep hills! Wait! There’s much more. Putting in the motor doesn’t change your bike’s dealing with capabilities. Isn’t that cool?

Now that I’ve bought your consideration, Do you wish to learn to connect a motor to your mountain bike? Let’s get began!

How To Put Motor In A Mountain Bike In 8 Steps!

You’ll have to comply with some steps however first! You’ll want some instruments.

Step 1: The Vital Preparation 

Bike Repair Tool Kit
Bike Restore Device Equipment


For any form of course of associated to bikes, whether or not it’s upkeep/repairs or putting in a motor, you will have some obligatory instruments. Listed below are the required instruments that it’s best to have at your disposal.

  • Hex Keys and Allen Wrenches (Make Certain That You Have Completely different Sizes Of These Instruments)
  • Pliers (Common and Needle-Nostril Are Beneficial)
  • Screwdriver (Philips and Flathead Are Beneficial)
  • Bike Conversion Equipment
  • An Adjustable Wrench
  • Socket Set
  • A Chain Device
  • Tire Levers
  • Wire Cutters AKA Strippers
  • Multimeter (Elective): Use This To Check The Electrical Connection
  • A Bike Restore Stand (Elective)
  • Thread Locker
  • Thread Locker Fluid
  • Sprocket
  • Drive Chain
  • Drill
  • Torque Wrench
  • Protecting Clothes ( Gears, Masks, Gloves)

Set Up Your Workspace

Okay, so you’ll want a quiet place to work the place you received’t be disturbed. No matter place works for you want your storage, driveway, or anyplace else. Simply preserve the children away!

Use A Bike Restore Stand Or Not

Do you have to use a motorbike restore stand for this entire operation? Truthfully, it’s your individual alternative. The stand will assist you preserve your bike in a single place as you put in the motor. 

Associated: How To Select The Proper Bike Work Stand For Your Bike Restore Wants

Put together Your Mountain Bike 

Like I mentioned, having the bike in a vertical place is critical. Any elevated platform will do the trick. One other vital step right here is to spare a entrance caliper tire. This will probably be essential to cease the mountain bike when wanted.

Throughout any such operation, there’s a increased threat of getting a punctured tire improve. To keep away from that, disconnect the interior tubes out of your setup and use a tubeless setup. Or you’ll be able to simply go together with puncture-resistant tires. No matter works for you!

Repair Mountain Bike

Step 2: Choose The Motor First

You can not begin the method with out having the proper motor first, are you able to? 

A few of my most well-liked selections are Brose Drive S-Magazine: 90Nm/567W and Shimano EP8: 85Nm. Your choice could be totally different. However whereas deciding on a motor, think about the next

  • How a lot torque do you want?
  • What sort of terrain will you trip on?
  • Do you want a fuel or an electrical energy motor?

A gas-powered mountain bike will probably be highly effective however fuel is dear. Alternatively, electric-powered mountain bikes are highly effective, cost-effective, they usually additionally assist defend the atmosphere.

Step 3: Examine Motor and Battery Compatibility 

All the time crosscheck between the motor that you’ve chosen and your bike. When you’ve got chosen the battery as per the compatibility then it ought to work with none issues. Listed below are some issues that it’s best to think about, simply in case!

Installing Battery On Electric Bike
Putting in Battery On Electrical Bike


Step What You Want To Do  Particulars
1 Motor Choice Select a motor that matches completely in your mountain bike body. Take into account minimal drilling necessities.
2 Body Adjustment If the chosen motor doesn’t match, make obligatory changes to the bike body. Set up a brand new bracket on the highest and backside tubes or use a strap system for downhill biking. Guarantee a cosy and comfy match.
3 Sprocket Set up Set up rear sprockets to help the brand new engine. Connect the rear sprocket rigorously to the principle powerhouse of the engine, offering the required energy to the wheel. Take note of each entrance and rear sprockets.

In case you’re trying to improve your biking expertise, take a look at our information on motorized bicycles.

Step 4: Now Set up The Drive Chain 

The drive chain transfers the torque from the motor to the rear wheels of the bike. For the reason that bicycle wheel is essential, it’s worthwhile to be sure that every part is finished precisely prefer it ought to be. We have to defend the drivetrain from any injury. For that, let’s add thread lockers on the loosened bolts. The loosened bolts can injury the drive chain as you trip. Add some thread locker fluid to your bolts and that received’t be taking place. 

Bear in mind, you need to set up the drive chain in a straight line. This can guarantee correct torque transition and in addition defend the drive chain from the motor’s strain. As soon as you’re completed, put your bike on the bottom and see if any chains or wires drop out. In case you see any, simply tighten them into their place. 

Is your bike’s entrance derailleur not shifting correctly? Take a look at our step-by-step information on how you can modify your bike’s entrance derailleur and get again to easy shifting.

Step 5: Set up The Motor 

And now lastly, It’s time to set up the motor. Begin by disconnecting the unique wheel, and have your motor on the prepared. Connect the brand new motor with the wheel and fix it to the bike. You’ll want an additional set of palms for this step. 

Right here, your brakes would possibly loosen whenever you take the wheel off. You should use calipers to align and tighten the mechanical brakes. Within the case of hydraulic brakes, additionally, you will must pump the brake lever. 

Having issues placing the wheel again on? Right here’s what it’s worthwhile to do:

  • Unhook any form of attachments to the wheel, this additionally contains the chain
  • Maintain the body, that is very obligatory for the again wheel. This can be a two-person job. Now, pull the derailleur backward. You’ll hear a click on that can sign the unlocking of the rear wheel.
  • Take away the brake pads. You should use pliers for that.
  • Now take away the wheel. You’ll be able to match the battery on any wheel. Additionally, you will must open the cantilever brake, generally the rim can also be sufficient.
  • Function the quick-release lever. This can open up the wheel correctly.
  • When you’re completed, place the bike on the ground. The bike seat ought to contact the bottom. 

Notice: When becoming the brand new tire, make sure to shut any levers that you just might need opened. Failure to take action might result in a giant fallout.

Are electrical mountain bikes definitely worth the funding? Learn our article on if electrical bikes ought to be unlawful and the way they’ll profit you.

Step 6: Set up The Battery

You have to to plug the battery into the connectors that you’ve already connected to the wheels, sounds simple proper?

The velocity gauge connector will probably be linked to the battery for all of this to work out. They are going to hook up with the throttle, and ensure to have the pliers on the prepared. 

Having bother shifting gears in your bike? Take a look at our information on why your bike received’t shift gears and how you can repair it.

Defending The Battery 

Having a battery field will defend the battery from rain and common put on and tear. You have to a drilling machine to connect the field. I’d suggest going for a small and light-weight field that doesn’t improve the load of the bike. The field will probably be positioned the place you set your water bottle.

Step 7: Time To Re-Assemble The Bike

Guarantee that the spark plug, bicycle engine, and bicycle chain are all in place. Reattach the wheels. Go along with the rear wheel first, since you’ve gotten connected the motor and battery to it. 

Your bike handlebar and stem may additionally want some changes. If you need a extra aggressive using place, modify the handlebar and stem accordingly. Doing so provides you with extra management and make your mountain bike much more balanced than earlier than.

Nonetheless confused? Nicely, learn our information on how you can set up bike tires to be taught the guidelines and tips.

Step 8: Check Drive!

Right here’s the place the actual enjoyable begins. Now convey down your bicycle and ensure every part is in place. Watch out the primary time round. Go sluggish. Examine how far your bike goes the primary time round after which take it from there. 

Interact the motor, that is obligatory to construct up the torque. Now press the clutch to attach with the motor. You have to be good to go now!

Electric Mountain Bike
Electrical Mountain Bike

8 Issues To Take into account Earlier than Putting in A Motor

Nicely, there are some issues that it’s worthwhile to think about prior to installing a motor in your bike.

1. The Motor Energy and Price 

It is advisable to think about the motor energy and the general value. I’d suggest getting a strong motor. Don’t go beneath a motor that has 750 watts of energy. Highly effective batteries ship an environment friendly trip and are sturdy. You even have to contemplate the general value. Plan your funds accordingly. If you’re going for a strong and environment friendly motor, I counsel that you’ve at the least $1000 to spare. It is advisable to think about the price of the motor, the charging package, the battery, and different elements. It’s good to even have a plan for the upkeep and substitute of components.

In search of a mountain bike that’s simple to retailer and transport? Take a look at our listing of the finest folding mountain bikes in the marketplace.

2. Motor Compatibility 

You may have discovered the right mountain bike and the right motor/battery, however what if they don’t seem to be even suitable with one another? How will you make that work out?

That’s why I like to recommend that you just be sure that the bike and motor are compatible. You’ll be able to all the time seek the advice of knowledgeable for assist.

Electric Bike Motor
Electrical Bike Motor

3. A Highly effective Braking System 

A motorized mountain bike will want highly effective brakes to convey a balanced expertise. It is advisable to go together with electrical bike-specific brakes which might be highly effective sufficient to convey your bike to a halt in a heartbeat. One other good thing about highly effective brakes is that they’ll maintain your bike and never make it collapse each time you convey the bike to a halt.

Is your electrical bike not working? Take a look at our information on how you can troubleshoot a useless electrical bike and repair widespread points.

4. Examine Your Native Legal guidelines and Rules 

Earlier than putting in a motor in your mountain bike, be sure that to verify together with your native authorities to see if that is even permitted. Though you’ll not often come throughout any rules, I nonetheless advise you to verify with them anyway. Class 2 Electrical Bikes are all the time permitted. Issues get a bit difficult with Class 3 Electrical Bikes however there are nonetheless workarounds for that.

5. The Battery Life and Vary 

The motor and battery go hand-in-hand, you received’t be capable of use a motorized mountain bike with out the battery. So, prior to installing the battery, think about its life and vary. The battery ought to provide you with a spread of 55+ miles on a full cost. The battery must also have the choice to be rapidly charged. So do think about getting a quick charger. 

In my expertise, lithium-ion batteries are finest for motor-assisted bikes. You is perhaps tempted to check out a much bigger battery in your mountain bike, they’re very highly effective but additionally heavy. Having them put in will solely prohibit you from longer journey.

Curious in regards to the advantages of electrical bikes? Learn our article on how they’ll enhance your well being, prevent cash, and cut back your carbon footprint.

6. The Weight Distribution

Since you can be including a motor to your bike, the load distribution will now be modified. This would possibly have an effect on the efficiency of the bike. 

The most effective strategy over right here is to be sure that the load of the motor that you’ve put in is evenly distributed. If one space of the bike is pressured greater than regular then that can create issues for you. 

7. Selecting A Rugged Wheelset

One other side that’s ignored by lots of people, it’s worthwhile to put money into a rugged and sturdy wheelset. Take note of your hubs, tires, and spokes. A motor-assisted mountain bike places lots of strain on a wheelset. For this reason you want the very best wheelset!

8. The Want For Common Upkeep

Similar to any form of electrical bike or common bike, you will have upkeep. All the time be sure that your bike is maintained and dealing correctly earlier than each trip. Have the instruments prepared, and don’t neglect to lubricate the chain!

Associated: Three Fundamental Bike Upkeep Suggestions You Can Do Your self

The Execs And Cons Of Placing A Motor On Your Mountain Bike

Facet Execs Cons
Comfort Driving turns into extra handy, with elevated velocity and climbing functionality. Train turns into extra environment friendly. Price of putting in a motor, potential upkeep bills, and substitute half prices.
Lifespan The bike’s lifespan is elevated as motor help reduces put on and tear on elements. Elevated weight as a result of motor, doubtlessly affecting the bike’s agility and responsiveness.
Adventures Permits for longer adventures with out getting drained, because of the help of the motor and a strong battery. Lowered type of train, as the trouble required, is considerably decreased.

Construct A Motorized Bike At Residence 

Since now you can set up a motor on a mountain bike, you would possibly wish to strive your expertise on different bikes as effectively. Watch this enjoyable video on how one can construct a tremendous motorized bike at dwelling.


Can I Put A Motor On My Mountain Bike?

It’s potential to put in any form of motor in your mountain bike, you may go together with a gas-powered or an electric-powered motor.

How Quick Is A 100cc Motor?

These motors are very quick, the typical velocity of 100cc motors ranges from 55 to 75 mph. There are additionally some distinctive motors which have damaged the document at 116mph.

Which Bike Motor Is Finest In The Lengthy-Run?

You’ll be able to select between a gas-powered or an electric-powered motor. Though electrical motors are principally most well-liked in the long term due to their advantages and affordability.


Congratulations! You may have completed it! Only one vital factor I’ll point out right here is that it’s higher to have two units of palms relatively than one whereas putting in a motor in your mountain bike. You’ll want some further assist.  Hopefully, going by means of this information has given you adequate data to associate with the method. Do you’ve gotten any questions? Please let me know within the feedback beneath!

Additionally Learn


This text was crafted by Luke Ameen, Affiliate Editor, a seasoned professional, bringing 8 years of expertise and data about all sorts of bikes. Our objective is to offer you correct, dependable, and helpful insights that will help you make knowledgeable selections and improve your biking expertise.

Ought to you’ve gotten any questions or require additional clarification on the subject, please be at liberty to attach with our professional creator Luke Ameen by leaving a remark beneath. We worth your engagement and are right here to help you.



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