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KTM 50SX 2024 2025 Husqvarna TC50 2024 - 2025 / GasGas MC50 2024 -2025 Phathead cylinder head kit
KPMI replacement compression release button for your Phathead cylinder head
K51 - 42cc Stock compression K52 - 40
Y105 Big bore 52
6cc (100+ octane)
Yamaha YZ125 Phathead cylinder head kit 1994-2000 YZ125 KTM 50SX 2024 2025 HusqvarnaYamaha YZ125 Phathead cylinder head kit 1994 2000 Chamber selection: Y11 10. 0cc Stock Y12 9. 3cc (95+ octane) Y13 8. 8cc (100+ 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 stronger and transfers heat better than cast