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CX52 (105+ octane)
Yamaha YZ125 Phathead cylinder head kit 1994-2000
2016-2022 KTM 150SX Phathead 150cc combustion chamber HUSQVARNA GASGAS TC150 MC150
KTM 50SX 2024 2025 Husqvarna TC50 2024 - 2025 / GasGas MC50 2024 -2025 Phathead cylinder head kit
5cc Stock compression
Honda CR250 2002-2004 Phathead cylinder head kit Yamaha CX52 (105+ octane)Honda CR250 Phathead cylinder head kit 2002 2004 Chamber selection: HF21 17. 4cc Stock compression HF22 16. 4cc (95+ octane) HF23 15. 5cc (100+ octane) HF24 14. 4cc (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
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