Precision Works K-Series RBC PRB Nitrous NOS Spray Plate 70mm 72mm 74mm K20 K24 Accessories It’s a direct bolt-on kit

It’s a direct bolt-on kit for 2016-2021 Civic Si and non-Si models

while the extra O₂ bung provides flexibility for aftermarket sensors

9 grade quality bolts

100% billet aluminum block off plate

and horsepower gains

Precision Works K-Series RBC PRB Nitrous NOS Spray Plate 70mm 72mm 74mm K20 K24 Accessories It’s a direct bolt-on kitPrecision Works K Series RBC PRB Spray Plate For NOS Nitrous Fits both patterns found on RBC and PRB K Series intake manifolds. Bore is 70mm, 72mm, or 74mm. Accepts all brands of nitrous jets and allows for a dual stage dry shot or single stage wet shot. Jet size is dependent on both the fuel pressure and the bottle pressure. Instruction is not included. Note: 70mm is in stock and ready to ship! 72mm and 74mm are made to order. Yes, if you have a 72