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Old 08-25-2018, 08:15 PM
Gibnut Gibnut is offline
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Join Date: Jan 2018
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Quote:
Originally Posted by GGian View Post
Gibnut, do you have any pics of the stock head? Ive just picked up my EC250GP and am happy with how it runs, but I do know how good the TSP head mod is after getting it done on my past few bikes.

Anyone had the squish measured on a '18 250GP?
Before & after, squish 2.25mm stock, 1.35mm now.

Jake, your compression will be in the mid-high 15?s if you shave a mm off and do nothing else. Ping & run-on almost guaranteed.
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