KTM 50SX 2024 2025 Husqvarna TC50 2024 - 2025 / GasGas MC50 2024 -2025 Phathead cylinder head kit Yamaha 8cc (91+ octane)

8cc (91+ octane)

YFM200 Moto-4 YFM350FW Big Bear 4x4 YFM350X Warrior YFS200 Blaster 1988

part numbers from HotRods are 4166(2006-2021) and 4116 (1991-2005)

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KTM 50SX 2024 2025 Husqvarna TC50 2024 - 2025 / GasGas MC50 2024 -2025 Phathead cylinder head kit Yamaha 8cc (91+ octane)KTM 50SX 2024 2025 Husqvarna TC50 2024 2025 GasGas MC50 2024 2025 Phathead cylinder head kit Chamber selection: SX50 4. 9cc stock compression SX51 4. 7cc 100+ octane SX52 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