ST4s weapon

When Mayur Raval’s ST4s came to Ducshop it was barely running. The lay shaft nut was loose and the pully was moving about, damaging the lay shaft. Even though the engine was still under warrant, Mayur decided to keep the bike at Ducshop and rebuild the engine at his own cost.

We blue-printined his engine and while doing so, installed high compression pistons and upgraded to the stock 996 intake cams, removing the milder ST4 cams. We then installed a PCIII and built a custom map. Unfortunately we weren’t able to do a before run, because the bike was running so badly when it arrived, but we estimate Mayur gained 12 horsepower with his modifications.

So impressed with its performance, Mayur even took it to the track. So if you’ve ever got motored by an ST4 at a SE track day, it was probably Mayur.

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