Talk about serious. This model has more wins than even we could imagine. If you're a 4150 type of racer, what can we say, this is it! If it's naturally aspirated or using light nitrous (nitrous shot of 350 hp or less) this design is the one. It has all the features you could ever ask for in a carburetor.  Machined stepped boosters,  a true race fuel curve (not a corporate design), and a custom multi-adjustable bleed configuration that allows this model almost infinite adjustability. This design flat out works on almost everything. It even sounds tough cruisin' the streets.

Charlie Booze used this model to become the first NMRA Hot Street car into the 8.7 second zone and holds the 2008 NMRA Hot Street E.T. and MPH records. 

To quote Charlie, "We constantly test other designs from other companies, but the Pro Systems carburetor is the fastest carburetor in our stable. 

But if bracket racing is where you're at, just ask Pinks All Out event winner Jay Hinkelman, who used this carb "out of the box"  with no adjustments to run the number over and over to win the event at Milan, MI. 

Not to be outdone, Shawn Blythe took another Pinks All Out event win for our side at the Budds Creek event, with only a single jet change required and Marv Davis joined the crowd and won the Pinks All out Tucson event.

Power and consistency, you can have both with this series.

(Dogleg booster shown, annular model available.)

The new PRO Series 4150 include these features:

• HP main body
• Available in cfm ranges from 780-1040
• Adjustable air bleeds
• Billet Base Plate
• Balanced drag float or Tunnel Ram Floats(10-12.5 grams)
• Screw-in jet extensions
• Clear sight glass
• Stainless plate screws
• Custom sized needle and seats (.110-.150)
• Electronically wet-flow calibrated
• Custom true race or throttle stop/bracket or street use - fuel curve
• Live-engine tested
• Techline access
• Wet-flow dyno sheet for easy jet selection

Priced as low as: $590.00/gasoline or $690.00/alcohol