Universal Fits For Top Brand 70mm Steering Wheels: This 6-bolt horn retainer ring is engineered to match the standard 70mm center hub pattern used by leading aftermarket steering wheel brands including MOMO, NRG, Sparco, OMP, VSW, and other compatible 70mm bolt-circle wheels—ensuring a secure, OEM-style fit without modification.
Precise Dimensions For Reliable Horn Button Mounting – OD 82mm / ID 50mm: Features an outer diameter of 82mm and an inner mounting diameter of 50mm (where the horn button snaps or screws in), matching the exact geometry of most universal horn buttons. Eliminates wobble, misalignment, or loose-button issues common with ill-fitting retainers.
Secure 6-Bolt Anchoring System: The 6 evenly spaced mounting holes provide balanced clamping force around the steering wheel hub, preventing rotation or loosening—even under aggressive driving or track conditions.
High-Grade Metal Construction: Crafted from durable stamped steel with anti-corrosion finish, this retainer ring resists warping, cracking, or fatigue over time. Far more reliable than cheap plastic alternatives that break during installation or fail under stress.
Simple Bolt-On Installation: Just align the retainer ring over your steering wheel's center hub, insert your horn button into the 50mm inner bore, and secure with your existing horn contact kit. No drilling, welding, or special tools required—ideal for DIY enthusiasts and professional installers alike.
Description
Specification:
Type: Horn Button Retainer Ring
Fitment Type: Direct Replacement
Bolt Pattern: 6-Bolt Pattern
OE/OEM Part Number: 121820
Material: Steel
Work with 6 bolts MOMO NRG Sparco OMP VSW 70mm(2.76")
Snap the horn button on the Steering Wheel
OD 82 mm(3.23"), ID ( where the button attaches) 50mm(1.97")
This retainer ring is the part that secures the MOMO, NRG horn button in the hub adapter. This goes between the hub adapter and the steering wheel, so you have a place to snap in the horn button.
Fitment:
Designed for use with MOMO, NRG Horn Buttons (though may also fit other horn buttons that designed the same)
Note: Fits ONLY steering wheels with standard 70mm 6-bolt hub pattern. Does NOT fit OEM factory wheels or non-70mm hubs (e.g., 65mm, 74mm). Verify your steering wheel's hub before purchase.