Top products from r/motorizedbicycles

Amazon or eBay will have a brake kit.

CNC Adaptor: https://www.amazon.com/UAUS-Sprocket-Adapter-Motorized-Bicycle/dp/B07ZJ3STLC/ref=sr_1_6?crid=1RF5YNX546933&keywords=motorized+bicycle+sprocket+adapter+kit&qid=1574881286&sprefix=motorized+bicyle+sp%2Caps%2C319&sr=8-6

Disc Brake kit: https://www.amazon.com/BlueSunshine-Front-Back-Disk-Brake/dp/B07458MXNB/ref=sr_1_1?dchild=1&keywords=motorized+bicycle+disc+brake+kit&qid=1574883409&sr=8-1
Note: The CNC hub has a 6 bolt pattern near the center of the hub to bolt the rear disc onto. If you wish to use disc up front, you will need a front wheel or hub that can adapt to disc brakes. You can also find 26" wheels with these disc brake hubs already installed.

Front disc brake will need one of these: https://www.amazon.com/Fashion-Life-Adjustable-Bracket-Mounting/dp/B019OML8VE/ref=pd_bxgy_468_2/136-3711700-3661816?_encoding=UTF8&pd_rd_i=B019OML8VE&pd_rd_r=9be28cda-a6eb-4e2e-917e-90974ef50b31&pd_rd_w=wq72u&pd_rd_wg=XttIU&pf_rd_p=09627863-9889-4290-b90a-5e9f86682449&pf_rd_r=26T3QTM8CF54HNDW67HP&psc=1&refRID=26T3QTM8CF54HNDW67HP

For the front, you will need a new front wheel. https://www.amazon.com/Alex-Rims-Alloy-Front-Wheel/dp/B01FWHAHEE/ref=sr_1_1?dchild=1&keywords=26+x+1.75+bike+rim+disc&qid=1574887171&s=sporting-goods&sr=1-1

Disc Brakes are ideal, (better stopping) but if you don't want to go the hassle of installing them, you can instead opt for v brakes.
https://www.amazon.com/Sunlite-Cruiser-Steel-73-91mm-Chrome/dp/B000AO5J16/ref=sr_1_12?dchild=1&keywords=motorized+bicycle+v+brake+kit&qid=1574883735&sr=8-12

Use this video as a guide to installing disc brakes on your bike (please note, the rear disc will be bolted to the motorized bike sprocket, so, its mainly good for the front.
https://www.youtube.com/watch?v=emW7M-ZD0Pw&t=104s


Also, if you prefer "Mag" wheels as opposed to spokes, here's a nice set of BBR tuning mags for $119. These Include the motorized bicycle rear sprocket, so the above listed CNC Sprocket Adapter will NOT be needed if you buy these wheels. The Mags are disc brake ready, no additional adapters needed outside of the front and rear caliper mounts.

https://www.amazon.com/BBR-Tuning-Mountain-Cruisers-Motorized/dp/B076PWYSFS/ref=sr_1_10?dchild=1&keywords=bicycle+disc+brake+wheel&qid=1574884536&refinements=p_n_feature_six_browse-bin%3A6404041011%2Cp_36%3A-20000&rnid=386589011&s=outdoor-recreation&sr=1-10

Make sure everything fits your bike before purchase. Also, feel free to do some research.

I got them off of amazon for about $32 Here’s the link:
Sunlite D-Cruiser Handlebar, 32" W x 25" H x 7/8", Chrome Plated https://www.amazon.com/dp/B002I7MAEW/ref=cm_sw_r_cp_api_i_5sRADbJ33ZZEG

To get it to fit my stem I had to order shims to go between the stem and the bars:

Sunlite Handlebar Shims, 22.2 to 25.4mm, Silver https://www.amazon.com/dp/B0065URKQ6/ref=cm_sw_r_cp_api_i_AvRADb7AKZBSP

You have to do a lot of modifications to get such big bars to work, since I never could find a brake line big enough to reach the back and the throttle cable from the kit wouldn’t reach. The throttle setup is a bit odd and looks like it would fall off, but it hasn’t fell off once for me. I used 2 go cart throttle cables off of amazon also and a clutch cable lock from a 2 stroke to make the setup work. Here’s links to those:

HURI 3 Clutch Cable Lock Locker for Motorized Bicycle Bike 49cc 60cc 66cc 80cc 2 Stroke Engine https://www.amazon.com/dp/B06X9G5W2Y/ref=cm_sw_r_cp_api_i_wzRADbQABE3JR

WOOSTAR Throttle Cable fit for 150cc 250cc Go Kart Sunl Roketa JCL DUNE BUGGY Go Kart https://www.amazon.com/dp/B07L5FYDYF/ref=cm_sw_r_cp_api_i_hBRADbX2FXTT6

Good luck with yours if you decide to go with ape hangers, if you have any more questions about how I did it feel free to ask

It's not hard but time consuming. The more time you spend perfecting it the better it will be. Just take your time and it will be fine.

It's a 2 stroke so you have to mix 2 cycle oil in with normal gas. I run mine at 25:1 but when it was new i ran it at 16:1(more oil)

Off the bat I would replace the stock chain with a #41 so it doesn't derail as much.

Replace the stock spark plug with a NGK B6HS

Hard to say, but the razor slit sounds right. The tires aren't supposed to hold air, and sometimes can fail like that.

An improved tube like this
https://www.amazon.com/Bicycle-1-90-2-35-Schrader-Downhill-Thornproof/dp/B0190OZHOA/ref=mp_s_a_1_7?crid=2P8ISIZXQQX2Q&keywords=thick+bike+tubes&qid=1554515363&s=gateway&sprefix=thick+bike+tu&sr=8-7

And tire like this
https://www.amazon.com/Bell-Comfort-Glide-Bike-Tires/dp/B0012RJSXK/ref=mp_s_a_1_16?keywords=26%2Binch%2Bbike%2Btires%2Bkevlar&qid=1554515819&s=gateway&sr=8-16&th=1&psc=1

May be a welcome upgrade

Here's what I used when I assembled mine:

1. Socket set, metric, 8mm to 18mm with extension
   
2. Phillips-head and flathead screwdrivers
   
3. Drill with a 5mm or 1/4" drill bit
   
4. Needlenose pliers (slip-joint could work too; I used both, they're cheap at Dollar General)
   
5. Chain breaker for breaking the 415H chain (I used this one and needed a new master link too)
   
6. Large cable ties
   
7. Utility knife or snips
   
   If you need any recommendations for motorized bike accessories, let me know!
   
   EDIT: I just came back in from working on my bike, and I think something else you might find helpful is metric combination wrenches. I recommend this mechanic's tool kit, though I have some cheap Chinese TrueValue tools that work really well too.

Think this guy will work? I hope so because that’s what I ordered...
Sunlite Easy Off Single Freewheel, 18T x 3/32" https://www.amazon.com/dp/B003L9CASC/ref=cm_sw_r_cp_tai_UutOBbVJGGYA3

You may want to look into caliper brakes as well. When I was building mine, the frame and hubs I had didn't have disc brake mounts, meaning I'd either have to weld them on or find really niche adapters (you may be in the same boat?). Most beach cruisers have caliper brake mounting holes though, it's usually just a hole sometimes filled with a bolt in the frame directly above the tire. This is assuming you don't have v-brake mounts which would be even easier.

If you look into caliper brakes, keep in mind that the front and rear brakes aren't the same, since their mounting bolts have to be different lengths.

Kool Stop Salmon pads are debatably the best budget caliper brake pads. (available on amazon, as well as most bike shops)

try removing the pads from the brake to compare, as they come in various shapes and form factors, though typically either an 'insert' that is hammered in with an awl, or a pad with a screw on it that can just be threaded on.

it may also be worth watching the park tool brake video for handy tricks on how to set toe-in (avoid squeaky annoying and save wear on the pads) as well as any adjustment settings you might desire.

the form of brake on your bike, the direct pull caliper is adequate for long pull bike levers, and offer a large amount of braking force for a small amount of movement at the caliper, but the biggest pain I've experienced with them is when one side doesn't pull as much as the other, requiring you to remove it so you can place the spring on the next peg and hope its enough adjustment

I run the zeda 88/ cdh 66 pipe and its quite good. Added enough torque that I can pull wheelies now. Needs a muffler to be at a reasonable volume though. https://www.amazon.com/dp/B01N3ONOY9/ That's the muffler I used. Doesnt reduce performance much, and makes it very very quiet.

No idea. It's a 2 stroke oil only, meets or exceeds the standards for it. Heard nothing but good things from motored bike community and lawn people.

Opti-2 34oz. EZ Measure Bottle https://www.amazon.com/dp/B005KRVVJC/ref=cm_sw_r_cp_apa_Zyz5yb6JNP42A

try a tool like this. costs nothing
https://www.amazon.com/TOOGOO-Bicycle-Cycle-Crank-Puller/dp/B006UMFUES

I used this muffler from Amazon on my motorized bike and it works great. On your pipe you will need to use a small piece of heater hose and some hose clamps to attach it as your pipe and the muffler have the exact same size entry/exit points. I know this because I have that exact expansion chamber lying around.

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Also you can cut it down to whatever length you need, in my case I cut it in half and it still works beautifully to keep the racket down.

Ooohhh... same thing on Amazon for $120

So I found this

https://www.amazon.com/Wheel-WEI-519-Disc-6-Bolt-Spokes/dp/B005LY4EMA

I don't know this brand but this is what I need, is this a good price? I don't think there would be much cheaper considering a regular wheelset is normally above $100

I have also looked at this pk80 one

https://www.amazon.com/Seeutek-PK80-2-Stroke-Motorized-Speedoemter/dp/B00B0GCZ3I

Would these work and keep the extra for a spare/replacement.
https://www.amazon.com/BlueSunshine-Front-Back-Disk-Brake/dp/B07458MXNB/ref=mp_s_a_1_4?dchild=1&keywords=front+bicycle+brake+kit&qid=1574045850&sprefix=front+bicycke+brake&sr=8-4#immersive-view_1574046103104

If the front wheel you have has no disc mount holes you could just use the rim brake surface. This rim brake would mount on the hole of the fork.