Nitrous Stage 1, 0-11000 RPM, 2 1/16" Nitrous Stage 1, 0-11000 RPM, 5" Nitrous Stage 1, 0-5000 RPM, 2 1/16" Nitrous Stage 1, 0-8000 RPM, 2 1/16" Nitrous Stage 1, 0-8000 RPM, 5" Nitrous Stage 2, 0-11000 RPM, 2 1/16" Nitrous Stage 2, 0-5000 RPM, 2 1/16" Nitrous Stage 2, 0-8000 RPM, 2 1/16" SPEK Nitrous Oxide RPM progressive controller 2 1/6 inch The SPEK Nitrous Oxide (NO2)RPM controller has built in Adaptive Traction Control (ATC) that can learn your Car or Truck’s acceleration and can be taught not to release NO2 in lower gears to prevent tire spin. The Spek controller learns your wide open throttle position sensor to ensure the NO2 valve is not released unless the throttle is wide open. In addition the tachometer has built-in High and Low set points to trigger an output for other devices or communicate to other Spek controller. For example you can use our NO2 controller to spool large Turbo’s up to desired Boost levels and us our Boost controller to deactivate the NO2 valve when the desired boost level is met. Our progressive output NO2 Digital controller is adjustable along a wide range of RPM’s settings with adjustable duty cycles. In addition we monitor the valve to ensure it is working properly. If you purchase a Spek Fuel pressure gauge, it can turn the NO2 valve Off if there is a loss of Fuel pressure before possible engine damage occurs. The patented Wide-Angle Dial design creates one of the largest dial ever mounted on a 2 1/16 inch gauge. A High intensity LED technology is used with both Day and Night time dimmer settings. The pointer and back ground lighting are both adjustable with  7 color background lighting to choose from. A Brushless stepper motor is used for a accurate pointer reading. Spek gauges are programmed through patented water resistant stainless steel command keys located on the faceplate for demanding environments. No control boxes or hand-held remote programmers are needed. Peak playback value can be retrieved. Spek gauges come with 10 foot wire harness for plug and play installations. Self diagnostics software will flash the background if the setup is not completed properly or a sensor input is lost. Features: *Progressive NO2 digital control module #14612 to monitors the NO2 valve *Brushless stepper motor with full sweep 280 degree pointer. *communicates to other SPEK fuel pressure and Boost controllers *7 Color background setting with day and night dimmer settings. *PEAK playback *Programmable outputs to turn on a 2 amp loads or high current relays. *Fits standard 2 1/16 inch ProParts pods, Dash Pods and universal #81102 steering column mount. * Plug and Play wire harness 10 foot wire standard * Available in Black or Chrome bezel Smoked or Clear lens, White, Black or Silver Dial. Optional: Part # 14829 relay wire harness 10 foot #12 gauge water resistant 40 amp relay. To run on board stage one and stage two outputs. Part#14820 Economy non-water resistant 40 Amp relay and harness #12 gauge wire.      43611 Controller, Nitrous Stage 1 Tachometer Gauge 0-11000 (White Faceplate, Clear Lens, Chrome Bezel) 2 1/16" Product ID# Price: $ 360.44 This product will be shipping soon.                43612 Controller, Nitrous Stage 1 Tachometer Gauge 0-11000 (White Faceplate, Clear Lens, Black Bezel) 2 1/16" Product ID# Price: $ 360.44 This product will be shipping soon.                436211 Controller, Nitrous Stage 1 Tachometer Gauge 0-11000 (Silver Faceplate, Clear Lens, Chrome Bezel) 2 1/16" Product ID# Price: $ 360.44 This product will be shipping soon.                43622 Controller, Nitrous Stage 1 Tachometer Gauge 0-11000 (Silver Faceplate, Clear Lens, Black Bezel) 2 1/16" Product ID# Price: $ 360.44 This product will be shipping soon.                43631 Controller, Nitrous Stage 1 Tachometer Gauge 0-11000 (Black Faceplate, Clear Lens, Chrome Bezel) 2 1/16" Product ID# Price: $ 360.44 This product will be shipping soon.                43632 Controller, Nitrous Stage 1 Tachometer Gauge 0-11000 (Black Faceplate, Clear Lens, Black Bezel) 2 1/16" Product ID# Price: $ 360.44 This product will be shipping soon.                43652 Controller, Nitrous Stage 1 Tachometer Gauge 0-11000 (Black Faceplate, Smoked Lens, Black Bezel) 2 1/16" Product ID# Price: $ 360.44 This product will be shipping soon.