CJ360 Exhaust Collar Differences and Modification

One of the quirks of the Honda CJ360, when compared to the CB360 & CL360, is its unique exhaust system. The CJ360 is the only model of the 360 family to leave the factory with a 2-into-1 exhaust system. When designing this special exhaust system for the CJ360, Honda made a few changes when compared to what you will see on the CB360 and CL360. 

1. The CJ360 has larger diameter headers (the same size as used on the CB450's) coming from the engine to the 2-into-1 connection. 
2. The CJ360 uses a unique exhaust collar so it can fit these over-sized headers into the existing CB360 engine casting. Unfortunately, these are collars are now incredibly hard to find. However, the #5015 CB360 / CL360 exhaust collars we carry can be modified to fit. The images and notes below show you how to make this modification.
3. Honda used different size graphite exhaust gaskets for the headers to the 2-into-1 connection. For this you will need to use two of our larger sized graphite exhaust gaskets.
4. Honda again used different gaskets for the 2-into-1 to the muffler connection. We do not have these gaskets, but you may find them by looking for Honda OEM Part Number: 18391-390-000

Exhaust Collar Modification Instructions:

To get our CB360 / CL360 exhaust collars to work on your CJ360, refer to the images below for measurements.

• Start by grinding down the flange on the back of the collar to .146"(3.7mm)
• Once ground down to spec, clamp the collar into a vise and bend it open slightly to the 1.7"(43.2mm) width.
• Grinding the outer flange first will allow for an easier time when bending the collar.