FMF PowerCore 4 Hex Slip-On Exhaust - Slip-On/Aluminum Fits: 2013 honda crf250l, p-core 4.1 mflr hex style Powercore 4 slip-on - hexagonal muffler P-core 4.1 mflr hex style Manufacturer: fmf racing Photos are for reference only, please read title and product description carefully.