TOP END PISTON KIT KTM HQV GAS SX TC125 23 26, MC125 24 26 (VARIOUS SIZES) Bike Cleaner HUSQVARNA FC 350 (Brembo caliper) 600308BLK 44 HUSQVARNA FC 350 (Brembo caliper) 2014 2015 EXC 250 93 93 DF606 DF607 KTM 250 XC F W 250 06 14 DF606 DF607 KTM 250 XC F W 250 15 DF606 DF607 KTM 300 ENDURO 300 92 92 DF606 DF607 KTM 300 ENDURO 300 93 DF606 DF607 KTM 300 EXC 300 03 03 DF606 DF607 KTM 300 EXC 300 04 DF606 DF607 KTM 300 EXC E 300 08 DF606 DF607 KTM 300 EXC F SIX DAYS 300 19 DF606 DF607 KTM 300 EXC TPI SIX DAYS 300 19 DF606 DF607 KTM 300 MXC 300 04 DF606 DF607 KTM 300 SX Vertex Two stroke Pistons which changes the geometry after the piston reaches operating temperature