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Suzuki DR-Z400S (2013)
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CategoryLast UpdatedReviewThis info is for the DRZ400 +4 mm stroker.
You will need to add two base gasket layers to keep
compression ratio close to factory.(total of 5 base gasket layers)
Example..Piston listed as 11.3 compression with stock "S" model 3 layer base gasket will be over 13 to 1 with the Stroker crank installed.
This WILL require racing fuel.
If you use 5 base gasket layers,(stock "S" model base gasket AND two "E" model gaskets) compression will be 11.1 allowing the use of "regular" pump gasoline.