KTM65SX 2009 - 2025 Husqvarna TC65 2024 - 2025 / GasGas MC65 2024 -2025 Phathead cylinder head kit Chamber selection:SX67 5.8cc 105+ octane 3cc Stock compression
Description
3cc Stock compression
Athena 295cc 72mm YZ250 YZ250X WR250 Phathead cylinder head kit 1999-2026
OE cylinder 144cc 58mm
4cc 110+ octane
KTM65SX 2009 - 2025 Husqvarna TC65 2024 - 2025 / GasGas MC65 2024 -2025 Phathead cylinder head kit Chamber selection:SX67 5.8cc 105+ octane 3cc Stock compressionThis head kit uses the 2024 2025 style plug with longer reach for an upgrade to the 2009 2023 models. Use the NGK MR8BI or OE 2024+ spark plug KTM 65SX 2009 2025 Husqvarna TC65 2024 2025 GasGas MC65 2024 2025 Phathead cylinder head kit Chamber selection: SX65 6. 2cc stock compression SX66 6. 0cc 100+ octane SX67 5. 8cc 105+ octane Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder head nuts, copper washers,
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