05-06 / 07-10 Headers - What's the difference? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 4 (permalink) Old 08-15-2019, 10:49 AM Thread Starter
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05-06 / 07-10 Headers - What's the difference?

Hi All,

I'm going to put a 2012 1050 engine in my 2000 955i this winter, and I'm trying to work out the exhaust system at the moment.

My current understanding is:
- 05-10 exhausts have the catalytic converter in the mid pipe and the lambda sensor in the headers. If I just use the headers and a slipon I end up with a cat-free system and I can just put a bung in the lambda sensor mount.
- 05-10 headers should also have better compatibility with my frame than 11+, as the lower mounting tab used on the 05-10 is present on my frame but needs a hole drilling for the bolt to go through.
- The low mount slipon will mount from the rearset (I already have 1050 rearsets fitted) so I don't need to worry about my 955 subframe/pillion pegs not matching the slipon mounts. Also I prefer the look of a low mount

Having looked at the parts diagrams, it seems there are several versions of 05-10 headers:

Up to VIN 281465: T2204732 (Non-cat) or T2204731 (Pre-cat)
VIN 281466 - 333178: T2205680 (Pre-cat) or T2205570 (Pre-cat)
From VIN 333179: T2205680 (Pre-cat) or T2204732 (Non-cat)

Looking at slipons confused me more, as most manufacturers seem to do separate systems for 05-06 and 07-10 year ranges. I'm guessing the 05-06 matches up with the "up to VIN 281465" headers and the 07-10 matches up with the 281466+ headers.

Can anybody help answer my questions:

1) Is my current understanding correct?

2) What's the difference between pre-cat and non-cat? They look identical on the parts diagrams and I would expect a big bulge for a cat in the "Pre-cat" headers.

3) I don't want a catalytic converter so I'm guessing I should aim for the non-cat headers. How can you identify which is which by looking at them when buying second hand?

3) Aside from the cat/non-cat issue, is there any reason to prefer a particular year range of headers over the other? How does this relate to the slipon year ranges?
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post #2 of 4 (permalink) Old 08-15-2019, 07:48 PM
Production 125
Main Motorcycle: speed triple 955i/1050
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You can use any 1050 header if your prepared to cut and weld, also the later 955
will match the head and follow the frame, I'm using 06' daytona on mine, better
flow,bit more power,make your own mid pipe,spend a bit of time matching them
to the ports,ground clearance under ain't great but your boot will touch first !
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post #3 of 4 (permalink) Old 08-16-2019, 01:55 PM Thread Starter
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What would I need to cut and weld to use 1050 headers?
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post #4 of 4 (permalink) Old 08-20-2019, 03:05 PM
Production 125
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My avatar piccy is my bike,will put some picture's in an album so they will be clearer,you can
see where the cuts have been made, daytona collector pipe is larger dia, sprint pipes are
flatter,almost side by side where they enter the collector,same dia as sp3 on the ones I've
measured, but that may change on year,mine was bit longer when installed but got cut
down after a few dyno runs and its sweet where it is with my cams and timing.
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