GReddy 60mm air fuel ratio gauge. Comes with wideband sensor, control box and wiring. super nice and very accurate. This is one of our favorites! - $269

GReddy 52mm boost gauge. 2.0 bar (29 psi). Available in white or black. Both are backlit green. - $127

GReddy 52mm Exhaust gas temp gauge.300C to 1200C range. Available in white or black. Both are backlit green. - $152

AEM UEGO Gauge with bosch wideband o2 sensor. wanna get serious? this gauge is accurate to .1 AFR and is the best way for you to monitor/setup your fuel mixtures. - $429

Greddy Temp gauge. can be used for water temp, or oil temp. 30C to 150C range. Available in white or black. Both are backlit green. - $103