MUFFLER PC 4HEX KX250'21 Tool OEM NUMBER 7810 201 0000 FITMENT KTM MX Snowmobile OEM NUMBER 7810 201 0000 FITMENT KTM MX 250 SX F 06 15 350 SX F 11 15 400 SX F 00 07 450 SX F 03 15 505 SX F 07 08 520 SX F 98 02 525 SX F 03 06 KTM ENDURO 250 EXC F 02 16 350 EXC F 11 16 400 EXC F 00 12 450 EXC F 06 16 500 EXC 12 16 500 XC W 12 16 520 EXC F 99 02 525 EXC F 03 06 530 EXC F 08 11 350 FREERIDE 12 17 HUSABERG FE 250 501 13 14 HUSQVARNA FC 250 450 14 15 FE 250 501 14 16 Optimal Mobility and Ventilation: Elastic panels and ergonomic design allow agile movements during maneuvers Specification Computer designed and dyno tested for every 4 stroke application