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COMMON MOTOR COLLECTIVE
Honda CB350 • CB360 • CB450  | Parts • Info • Support
Phone Support • (832) 356-7670 • Mon & Tues 12p-6p CST

FAQ

Answers to the most frequently asked questions. If you don't see the answer to your specific question contact us directly.

MODEL SPECIFIC QUESTIONS

STORE / ACCOUNT

ENGINE

ELECTRICAL

FUEL SYSTEM



GENERAL

Do you ship internationally?

We do ship all over the world regularly. For a shipping quote simply put a shopping cart together, press the "proceed to checkout" button, and enter your shipping address. Once your postal code is entered you should get a quote based on the weight of the items in your shopping cart.

You may feel like the quote is on the high side, and it may be. The final shipping cost will be calculated based on actual weight and if there is a balance you will be refunded the difference.

How do I return my item?

You can return your items with in 30 days of purchase for a refund or store credit.

Mail to:
CMC Returns
(put your order number here)
1615 Branard St.
Houston, TX 77006

Please include in the return package a copy of your invoice with a brief note about the reason for your return. When we receive and inspect the kit we'll notify you and issue you a refund.

Do you have this obscure / oddball part?

Simply ask us using our contact form. If it's for a Honda 350, 360, or 450 there's a good chance that we do. We carry a wide variety of parts that aren't necessarily on the site yet so if there something you're looking for and don't see it just ask.


ENGINE

What size chain / sprocket do I need?

It depends entirely on the number of teeth on your existing sprockets and the number of links in your existing chain. Start with counting all of that. This video may help.

If you're keeping your gear ratio the same, simply order replacements that match the tooth/link count on your current parts. If you're changing your gear ratio there are a few things to consider.

As each link alternates between an inner and outer link, any variation in chain length will be a multiple of two.

A larger sprocket (either front or rear) with the same length of chain will pull the wheel forward in the axle dropout. The opposite applies for a smaller sprocket. Depending on where your wheel sits in the slot, you may be able to go up or down in sprocket size without changing your chain length.

Chain length and wheel position varies bike to bike. Good news is you can return the unused chain if you end up needing a different size. You can error on the longer side and cut the chain down if need be. We carry chain breakers if you don't have one already.

Can I pull my starter without removing my side cover?

Unfortunately there's no way to remove the starter without removing the side cover, as the starter drive gear and chain will just drop into the engine. Consider the side cover gasket when doing this job, as you may need a fresh one depending on how it was treated the last time it was removed.


ELECTRICAL

What's with the two different headlight kits?

So the 3043 kit ($90 with bucket) is a universal aftermarket kit that fits a large number of bikes, may require slight mounting modification, but still looks pretty darn stock. The parts aren't necessarily interchangeable with the factory headlight assembly.

The 3044 ($100 kit without bucket) fits in the original factory bucket replacing the sealed beam with a lens and a replaceable bulb. The lens requires some modification on our end to fit the stock side-to-side adjustment screw hole in the factory trim ring, hence the additional cost. We made a video explaining how we do it and why.

In short, you need the $100 one to keep your stock bucket.

My bikes not charging/holding a charge. Is my stator bad?

Stator coils are not the most common culprit in the charging system. The two most common gremlins in the charging system are a faulty battery (common with Lead Acid batteries) or a bad regulator/rectifier. See if this video doesn't answer some of your questions.

There is always a chance you have a bad battery and that your stator is fine. The best way to test this would be to fully charge your battery, measure the voltage. Put it in the bike and get it running, and measure the voltage as the bike is running. If it keeps going down well below 12-13v it's the charging system not performing. If it stays fairly constant while it runs your battery might be faulty, which is not uncommon.

Similarly, if you fully charge the battery and let it just sit for a few days and the voltage drops considerably, then you should replace the battery.

I would like to use a capacitor, lithium ion, a smaller or no battery. What do I need to do?

The truth is these ignition systems were designed for use with a battery. We prefer AGM (absorbent glass mat) type. Unless you really know what you're doing, we don't recommend a capacitor (or battery-less) system for the bikes on our site.

We get a number of questions regarding the use of Lithium ion batteries in the old Honda twins due to their small physical size. Li-ion batteries are generally more sensitive to charging voltages. For this reason we do not recommend the be used for these specific bikes. If you do choose to try a Li-ion battery, make sure to test the charging voltage range on your bike and consult the battery manufacturer to ensure your bike does not exceed their specs.

The regulator/rectifier combo unit we offer is not MOSFET, in case that is a requirement for a specific battery you may want to use.

If you really want to go smaller, the closest, working, approach we've found is getting a physically smaller SLA battery, generally used on alarm systems, etc. It can be fastened up under the seat where it's out of sight. Anything over 5 Ah should work.


FUEL SYSTEM

My 360 air filters are different that the ones you carry. Will yours work?

There were two, slightly different, filter boxes used on the 360's - an early and a late style. Many folks swap out the late style boxes for the early style because the filter elements for the late style are no longer available.

The filters we have are the early style, which have a simple flat sided metal cover that pops over them. The late style filters use a convex shaped two piece box with a smaller rectangular filter that rests inside the box.

A late style bike can be converted to use an early style filter. You'll need both filters, early style covers (used) and requires fabricating a small bracket for the rear bolt to mount to the frame.

Do you have fuel line?

We do have fuel line, we're just in the process of getting it live. It's a nice clear/yellow polyurethane tubing that stays stretchy and is more crack-resistant than the black automotive line. We all use it on our bikes, mostly just a friction fit on most of the fittings, sometimes a small zip tie if anything. It's $3/foot and includes squeeze-type hose clamps.

It is NOT the same clear vinyl tubing you would get from the hardware store, which is crack-prone.

How do I install my new carb diaphragm?

With each carb diaphragm we sell we email you, the customer, a PDF instruction sheet on how to install them. Should you have more questions this video shows the installation process.

What size jets do I need?

As for jetting... there is not one universal answer for your bike. Think of your bike as a birthday cake... Jetting is like lighting the candles; the very last thing that you do. Carb rebuild, sync, standard tune up (cam chain, valves, ignition timing) must all be done first. Only then can we start to tackle the jetting question. Some quick tips on jetting tips.

The main jet has an effect on the top 1/3 of the rpm band (6000 to 9000 RPM). The bike should pull strong from idle to 9k without any issue. If it revs hard then hits a wall, say at 7k, then you are too lean. This can be verified by checking the color of the tips of your spark plugs. They will be fairly clean and almost white. If the bike pulls to about the same rpm but has trouble doing it then it is rich. If you put the choke on 1/2 way you will get the same effect. Spark plug tips will be black and sooty. Ideally the plug tips should be tan in color for a proper mixture and the bike should pull to top RPM smoothly.