KLX 300 Muzzy Slip on
#22
06-12-2011, 01:22 PM
Dejavu
I knew we'd been here before. Full info I got from Kawa' AUS and Two Brothers AUS supplier on post #8.
I tool have a KLX250S muffler. It came with my bike from the factory, fitted to 300R header. That's how we get em down here!
>>>https://www.kawasakiforums.com/forum...uestion-21311/<<<
I tool have a KLX250S muffler. It came with my bike from the factory, fitted to 300R header. That's how we get em down here!
>>>https://www.kawasakiforums.com/forum...uestion-21311/<<<
#24
06-12-2011, 05:02 PM
Join Date: Jan 2011
Location: North Shore of Lake Superior
Posts: 419
Results... well, it picked up a bit of power. Not earth shattering (you won't shatter the earth with any amount of power these bikes can make), but definitely more power than stock. Also, I hadn't ridden with the stock pipe in a month or more, so my comparison wasn't quite back to back.
Last edited by Lutz; 06-12-2011 at 05:04 PM.
#25
06-12-2011, 05:15 PM
Join Date: Jan 2011
Location: North Shore of Lake Superior
Posts: 419
Mine's a KLX250RH7A
Talked to the 2 Brothers Australia rep (they're based here in Perth.) The mid pipe that comes with the muffler IS designed to fit the 300 and 250 OE headers according to him. Summary of the conversation below.
The 2 Brothers mid pipe has a long dual taper (necessary to fit 2 sizes of head pipe) on the part that connects to the header. For the 250 the header connects to the smaller diameter pipe, for the 300 you clamp the larger diameter of the mid pipe and let the smaller (the end part) seat further inside the header pipe. To achieve this the small gasket on the inside of the 300 header needs to be removed.
The mismatch and fitting issue is not with the after market pipe. It was identified in the Kawa factory when they fitted the USA spec 250S muffler to the Aus spec 300 header to meet AUS ADR and noise regulations. It appears they solved this by fitting a gasket into the end of the 300 OE header so the 250S muffler could be fitted. Cheap factory fix. The ADR and noise regulations also account for the odd holes we have drilled in the carb' slide (they reduce exhaust noise by limiting the lift of the carb' slide.)
I' sure this info will help.[:-]
Talked to the 2 Brothers Australia rep (they're based here in Perth.) The mid pipe that comes with the muffler IS designed to fit the 300 and 250 OE headers according to him. Summary of the conversation below.
The 2 Brothers mid pipe has a long dual taper (necessary to fit 2 sizes of head pipe) on the part that connects to the header. For the 250 the header connects to the smaller diameter pipe, for the 300 you clamp the larger diameter of the mid pipe and let the smaller (the end part) seat further inside the header pipe. To achieve this the small gasket on the inside of the 300 header needs to be removed.
The mismatch and fitting issue is not with the after market pipe. It was identified in the Kawa factory when they fitted the USA spec 250S muffler to the Aus spec 300 header to meet AUS ADR and noise regulations. It appears they solved this by fitting a gasket into the end of the 300 OE header so the 250S muffler could be fitted. Cheap factory fix. The ADR and noise regulations also account for the odd holes we have drilled in the carb' slide (they reduce exhaust noise by limiting the lift of the carb' slide.)
I' sure this info will help.[:-]
#26
06-13-2011, 12:32 AM
It couldn't be easier. Unbolt the 250S exhaust. Bolt on the 300R exhaust. It's a direct fit.
Results... well, it picked up a bit of power. Not earth shattering (you won't shatter the earth with any amount of power these bikes can make), but definitely more power than stock. Also, I hadn't ridden with the stock pipe in a month or more, so my comparison wasn't quite back to back.
Results... well, it picked up a bit of power. Not earth shattering (you won't shatter the earth with any amount of power these bikes can make), but definitely more power than stock. Also, I hadn't ridden with the stock pipe in a month or more, so my comparison wasn't quite back to back.
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