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KTM250SX KTM250XC 250TPI 2017-2022 Phathead cylinder head kit GasGas Husqvarna TC250 MC250

Chamber selection
Regular price $350.00 USD
Regular price Sale price $350.00 USD
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KTM250SX KTM250XC 2017-2022 Phathead cylinder head kit GasGas Husqvarna TC250 MC250

 We have a very wide range of chamber selection due to the motor being used in a number of different machine variations.  These heads are all TPI compatible.  

As a side note "Stankdog" does not run high compression for motocross. He runs a custom chamber very similar to XC11.  


Chamber selection:

XC10  26.8cc  Stock(xc)
XC11  25.5cc  XC+1

SX10   23.9cc Stock(sx)

SX 11 22.5cc  SX+1

SX12 21.1cc  SX+2   

SX13 20cc  SX+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 stronger and transfers heat better than cast aluminum.  The two piece design allows an increase in coolant flow as well as surface area which improves cooling for better consistency and performance.   

One of the main benefits of the product is the replaceable combustion chamber which are available in a range of compression options.

Suggestions : Swap chambers to adjust performance for a variety of riding conditions and track types or keep a spare in case of engine failure.