Join Date: Feb 2015
Location: coogee beach nsw australia
Mentioned: 17 Post(s)
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leo vince carbon evo slipon[s] on cbtr250/300r worked well, no popping, no obvious loss of torque [if anything better response on a steep uphill run], with both cb reducers in.. they used to say '10lb = one hp' so theres one hp on cbr250r dumping stock anchor..
its a single, so will sound like a single, only louder..
for me the extra loudness was like feedback on a habit of over-revving for engine braking etc.. an unexpected positive from the slipon..
at idle its not offensive imo.. if treated as a tool, feedback on your throttle habits etc, it can be a positive thing.. context including very loud stock harleys etc.. context also includes a couple of light revs approaching stopped/slow cars at traffic lights etc,, getting short range attention without using horn etc.. [potential safety factor]..
still, many other slipons do make 'too much' noise.. some well made sound 'tinny' to my ear, eg yoshi steel etc.. carbon is slightly 'softer' sound given similar revs etc.. but for some a plain [no cat] muffler built for lightness and nice tight fit is worthwhile at near stock sounds..
[bear in mind stock can be lightly oiled and stored for later sale etc]
there is a mass of specific info on thios and other motorcycle media, including videos comparing sound and noise etc...