KTM300SX KTM300XC 300TPI 2017-2022 Phathead cylinder head kit GasGas Husqvarna TC300 MC300 Chamber selection:T340 26.2cc +2 2cc (95+ octane)

2cc  (95+ octane)

Athena YZ125 58mm 144cc big bore compatible

Buy a size larger than usual to avoid shrink issues

103cc 52/53mm big bore chamber 100+ octane - for use with big bore piston

KTM300SX KTM300XC 300TPI 2017-2022 Phathead cylinder head kit GasGas Husqvarna TC300 MC300 Chamber selection:T340 26.2cc +2 2cc (95+ octane)KTM300SX KTM300XC 300TPI 2017 2022 Phathead cylinder head kit GasGas Husqvarna TC300 MC300 These heads are TPI compatible. Chamber selection: T320 28. 5cc stock T330 27. 4cc +1 T340 26. 2cc +2 T350 25cc +3 Phathead Kits include a head shell with one combustion chamber, two sets of o rings, cylinder and some stickers for your bike and tool box and installation instructions.. Phathead cylinder heads are made of 6061 T6 billet aluminum. The material is