Carbureted Nitrous Systems » Holley (4150 Flange)

  • These Nitrous Express nitrous systems inject nitrous/fuel under the Holley style (4150 flanged) squarebore carburetor via a nitrous plate.
  • All NX plate systems come with Billet aluminum plates and feature spraybarless technology, there are no spraybars to break or spin, this will guarantee years of trouble free operation!
  • These systems can be configured for street vehicles as well as full race vehicles, and can add anywhere from 50-500hp.
  • These complete nitrous systems provide more than a standard nitrous kit. We include the nuts, bolts, electrical connectors, wire and many other hookup parts that are not included in many n2o kits.
4150 4-BBL/GASOLINE (100-500HP) WITH 10LB BOTTLE /
4150 4-BBL/GASOLINE (100-500HP) WITH 10LB BOTTLE
Part# 50040-10
$727.32 
4150 4-BBL/GASOLINE (50-300HP) WITH 10LB BOTTLE /
4150 4-BBL/GASOLINE (50-300HP) WITH 10LB BOTTLE
Part# 30040-10
$686.62 
4150 GASOLINE RNC CONVENTIONAL PLATE SYSTEM W/10LB BOTTLE / 4150  RNC PLATE NITROUS KIT
4150 GASOLINE RNC CONVENTIONAL PLATE SYSTEM W/10LB BOTTLE
Part# 55040-10
$1,152.96 
4150 GEMINI TWIN PRO-POWER (100-500HP) WITH 10LB BOTTLE /
4150 GEMINI TWIN PRO-POWER (100-500HP) WITH 10LB BOTTLE
Part# 60540-10
$813.02 
4150 GEMINI TWIN STAGE 6 (50-300HP) /
4150 GEMINI TWIN STAGE 6 (50-300HP)
Part# 60040-10
$742.32 
4150 HITMAN 4-BBL (100-150-200HP) WITH 10LB BOTTLE /
4150 HITMAN 4-BBL (100-150-200HP) WITH 10LB BOTTLE
Part# 40040-10
$530.97 
4150 HITMAN PLUS 4-BBL (50-200HP) WITH 10LB BOTTLE /
4150 HITMAN PLUS 4-BBL (50-200HP) WITH 10LB BOTTLE
Part# 40041-10
$633.06 
BILLET CROSSBAR PLATE SYSTEM, 100-500HP W/10LB BOTTLE (4150 FLANGE) / BILLET CROSSBAR NITROUS KIT 100-500HP W/10LB BOT
BILLET CROSSBAR PLATE SYSTEM, 100-500HP W/10LB BOTTLE (4150 FLANGE)
Part# 60542-10
$969.96 
BILLET CROSSBAR PLATE SYSTEM, 50-300HP W/10LB BOTTLE (4150 FLANGE) / BILLET CROSSBAR NITROUS KIT 300HP
BILLET CROSSBAR PLATE SYSTEM, 50-300HP W/10LB BOTTLE (4150 FLANGE)
Part# 60042-10
$901.98 
DUAL HOLLEY/GASOLINE (100-500HP) WITH 10LB BOTTLE /
DUAL HOLLEY/GASOLINE (100-500HP) WITH 10LB BOTTLE
Part# 50240-10
$863.36 
DUAL STAGE BILLET CROSSBAR PLATE SYSTEM (50-800HP) W/10LB BOTTLE (4150 FLANGE) / DUAL STAGE BILLET CROSSBAR NITROUS KIT
DUAL STAGE BILLET CROSSBAR PLATE SYSTEM (50-800HP) W/10LB BOTTLE (4150 FLANGE)
Part# 66042-10
$1,241.88 
DUAL/4150/ALCOHOL (50-100-150-200-250-300HP) WITH 10LB BOTTLE /
DUAL/4150/ALCOHOL (50-100-150-200-250-300HP) WITH 10LB BOTTLE
Part# 30245-10
$998.33 
DUAL/4150/GASOLINE (50-300HP) WITH 10LB BOTTLE /
DUAL/4150/GASOLINE (50-300HP) WITH 10LB BOTTLE
Part# 30240-10
$822.66 
HOLLEY 2-BBL/GASOLINE (50-300HP)  / 2-BBL/GASOLINE (50-300HP) WITH 10LB BOTTLE
HOLLEY 2-BBL/GASOLINE (50-300HP)
Part# 30020
$686.62 
INCOGNITO NITROUS SYSTEM. DRY NITROUS SYSTEM 16OZ BOTTLE / INCOGNITO DRY NITROUS KIT
INCOGNITO NITROUS SYSTEM. DRY NITROUS SYSTEM 16OZ BOTTLE
Part# 60000
$295.64 
MAINLINE CARB. SYSTEM WITH 10LB BOTTLE / MAINLINE CARB. NITROUS KIT
MAINLINE CARB. SYSTEM WITH 10LB BOTTLE
Part# ML1000
$411.51 
SINGLE ENTRY BILLET CROSSBAR PLATE SYSTEM, 100-500HP (4150 FLANGE) / SINGLE ENTRY BILLET CROSSBAR PLATE SYSTEM, 100-500
SINGLE ENTRY BILLET CROSSBAR PLATE SYSTEM, 100-500HP (4150 FLANGE)
Part# 63540-10
$969.96 
SINGLE ENTRY BILLET CROSSBAR PLATE SYSTEM, 50-300HP (4150 FLANGE) / Single Entry Billet Crossbar Nitrous Plate System,
SINGLE ENTRY BILLET CROSSBAR PLATE SYSTEM, 50-300HP (4150 FLANGE)
Part# 63040-10
$901.98 
SINGLE ENTRY BILLET CROSSBAR RNC SYSTEM .178 Solenoid, 250-650HP (4150 FLANGE) / SINGLE ENTRY BILLET CROSSBAR RNC SYSTEM .178
SINGLE ENTRY BILLET CROSSBAR RNC SYSTEM .178 Solenoid, 250-650HP (4150 FLANGE)
Part# 63940-10
$1,041.71 
SINGLE ENTRY BILLET CROSSBAR RNC SYSTEM, 250-750HP (4150 FLANGE) / SINGLE ENTRY BILLET CROSSBAR RNC SYSTEM, 250-750
SINGLE ENTRY BILLET CROSSBAR RNC SYSTEM, 250-750HP (4150 FLANGE)
Part# 63840-10
$1,381.96