<p>Very useful instrument by Koso for adjusting your engine and carburetor.</p>
<p>It measures exhaust gas temperature (EGT). It is measured in real time. As a general guideline - lower temperatures are indicative of rich air-fuel mixtures, (very) high temperatures of lean mixtures.</p>
<p>Easy install, no welding required. Manual and instructions are in English, as always with Koso products.</p>
<p>Vetex piston kit for the Aprilia RS 125 1988-2012 both Rotax 122 And 123 Type Motors</p>
<p>Choose Piston Size 53,93 - 54,00.</p>
<p><strong>Important:</strong></p>
<p>Vertex <strong>recommends a tolerance of 0.07 mm</strong> for this piston.<br /><br />Example: cylinders with size 54,02 the appropriate piston would be 53,95.<br /><br />It is very important to take into account this consideration since they do not have the same tolerance as the Vertex 2 rings pistons for which 0,05 mm is recommended.<br /><br /><strong>The needle cage must be replaced with the piston.</strong></p>
<p><span class="m06">The super slim style series comes with the all new design meter case which is slim and water resistant. <br />The slim body design allows you to install the meter on the bike easily. <br />The digital display design offer you a precise information, so you could monitor your engine better.</span></p>