KTM 50SX 2009-2023 Husqvarna TC50 GasGas MC50 Phathead cylinder head kit yz65 52mm big bore chamber Wiseco

52mm big bore chamber Wiseco 766M05200  and LukesRacing 105cc compatible(requires head gasket) $100

SX52 (105+ octane)

KTM250SX  TC250 MC250 HUSQVARNA GASGAS 250cc combustion chambers

4cc Stock compression

KTM 50SX 2009-2023 Husqvarna TC50 GasGas MC50 Phathead cylinder head kit yz65 52mm big bore chamber WisecoKTM50SX 2009 2023 Husqvarna TC50 GasGas MC50 Phathead cylinder head kit Chamber selection: SX50 09 4. 9cc stock compression SX51 09 4. 7cc 100+ octane SX52 09 4. 5cc 105+ octane Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions.. Phathead cylinder heads are made of 6061 T6 billet aluminum. The material is