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        • DBR Johnson/Evinrude 3.0 Liter Finger Port B-Spec Sleeve
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        • OPTIMAX 300XS ECU Reprogramming & Performance
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    • ***Download Release Form Here***
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DBR Johnson/Evinrude 3.0 Liter Finger Port B-Spec Sleeve

This is a drop in finger port sleeve capable of producing over 425hp and 10,000 rpm. This sleeve is designed for use with  a modified Wiseco 3119 piston or we can build ours .This also requires head and squish mods for the new deck height.  As with the 3.3 sleeve this design uses a 1mm shorter deck height. If you want all torque you can run the standard piston deck height and keep peak power down in the rpm range. We have won many races using this exact port spec.This sleeve design provides the tuner with porting shapes and heights that will win an F-1 race. A properly built 3 liter requires no welding to or epoxy on the block. This is the perfect sleeper. The block can remain stock appearing but haul ass. The 3 liter open deck block has large header diameters and lends itself to high rpm and over-rev. The drop in template sleeve makes porting less painful. Do it yourself or have your builder grind to this spec. It works.

Price: $150/per sleeve

Template sleeves are a one time purchase WITH a set of sleeves. $150 for the template sleeve. They are NOT sold individually.

Contact Us To Order

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  • Winning
  • Products
    • Electronics
    • Johnson/Evinrude >
      • Sleeves >
        • DBR Johnson/Evinrude 3.0 Liter Finger Port B-Spec Sleeve
        • DBR Johnson/Evinrude 3.3 Liter B-Spec Sleeve
      • Pistons >
        • DBR 3.3 Liter B-Spec Piston
      • Pyros
      • Pyro Studs
      • RWF Heads >
        • DBR 3.0 Liter RWF Head
        • DBR 3.3 Liter RWF Head
      • E-Tec Slide Intake
    • Mercury >
      • ECU Reprogramming & Performance Kits >
        • OPTIMAX 300XS ECU Reprogramming & Performance
      • Cowlings and Vents
  • Services
  • Flash My Merc ECU
    • ***Download Release Form Here***
  • Technical 101
    • 300X vs 300XS
    • Engine Combustion Pressure Analysis
    • ECU Re-Mapping 101
  • About Us
    • Our Dyno
  • Contact Us
    • Links and Affiliates
    • For Sale