Choose a base plate kit based on the Arai Helmet model you have using the chart below. Be especially careful as there are models with similar names (Corsair V, Corsair X; Signet-Q, Signet-X etc). They DO NOT take the same base plate kits as their shield designs are different.
| Base Plate Kit | Arai Helmet Model |
| SAI | Corsair V, Defiant, RX-Q, Signet-Q and Vector 2 |
| SAQ | Profile, Quantum 2, Vector |
| CTZ | CTZ |
| VAS-V | Corsair X, Quantum-X and Signet-X |