it is the stainless steel full exhaust line pipe for yamaha r15 / MT15 It is very easy to install, no cutting no welding is required, just plug and vroom. Easy to replace the stock exhaust and increase high performance. Required especially when the stock exhaust is replaced with aftermarket high-performance exhaust/slip-on. The outer diameter is 50.8 mm which is universal and can be fit to almost all the exhaust ( check the inlet diameter if your exhaust before buying) muffler or slip-on is not included.
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