SHOEI · RF-1400 · Full Face
The SHOEI RF-1400 Knee Down is a full-face motorcycle helmet built around the RF-1400 platform’s aerodynamic focus and compact feel, finished in Knee Down TC-5. According to SHOEI’s riding-style ratings, it’s aimed primarily at Street riding, with strong fit for Touring and Race use.
This model pairs a Multi-Ply Matrix AIM+ shell with a Dual Density EPS liner and a 3D Max-Dry System II interior. The CWR-F2 shield system is designed to support a natural field of view while managing airflow and sealing. Included with the helmet are a Pinlock® Evo Lens, Breath Guard, and Chin Curtain.
Construction
The RF-1400 uses a Multi-Ply Matrix AIM+ shell matched with a proprietary Dual-Layer/Multi-Density EPS liner. It also incorporates the Emergency Quick Release System (E.Q.R.S.) as part of the helmet’s overall safety-focused design. Certification is listed as Snell M2025D and DOT-218 Approved.
Shield
A CWR-F2 shield is specified for the RF-1400. SHOEI’s shield design combines a 2D flat outer surface with 3D shaping inside to support optimized visibility and a more natural view. Vortex Generators on the sides of the shield are intended to improve aerodynamics and help reduce wind noise, and the center lock helps distribute closing forces across both spring-loaded base plates.
Ventilation
Vent tuning for the RF-1400 was developed using SHOEI’s in-house wind tunnel with the goal of balancing airflow and quiet. The center/forehead vent was relocated and given an additional intake hole to help increase cooling air volume. At the rear, an enlarged exhaust outlet vent is designed to better use negative pressure suction to help expel hot air.
Aerodynamics
The RF-1400’s shell aerodynamics are intended to help the helmet move cleanly through the air while also contributing to reduced wind noise, without blocking informative road sounds. This aerodynamic approach is part of the RF-1400’s overall on-road focus, aligning with SHOEI’s Street, Touring, and Race riding-style ratings shown for the model.
Comfort
Noise reduction in the RF-1400 is supported by multiple elements working together: an aerodynamic shell profile, Vortex Generators aimed at reducing turbulence, and airtight window beading designed to create a windproof seal. SHOEI also notes voluminous cheek pads and removable ear pads that help suppress internal noise while still allowing essential road sounds.
Fitment
Inside, the RF-1400 combines a Dual Density EPS liner with a 3D Max-Dry System II interior. SHOEI describes newly designed cheek pads with added volume at the bottom for greater comfort and reduced wind noise, along with a soft yet durable lower cheek pad fabric intended to create a plush fit and feel over longer rides.
| Shell Type | Multi-Ply Matrix AIM+ |
|---|---|
| Shield Type | CWR-F2 |
| Liner | Dual Density EPS, 3D Max-Dry System II |
| Weight | 3.64 pounds |
| Certifications | Snell M2025D and DOT-218 Approved |
| Pinlock® Evo Lens |
| Breath Guard |
| Chin Curtain |
Included with this helmet as listed by SHOEI.
| Riding Style | Rating |
|---|---|
| Race | 8 / 10 |
| Street | 10 / 10 |
| Touring | 8 / 10 |
| Off-Road | 0 / 10 |
| Adventure | 0 / 10 |
Ratings published by SHOEI for the RF-1400 model (0–10).
RF-1400 Helmet Manual (PDF) SHOEI Helmet Size Chart Helmet Care Manual (PDF)
Provided by SHOEI. Opens in a new tab.
