Mishimoto 2021+ BMW G8X M3/M4 Auxiliary Radiator Rock Guards

This Mishimoto performance part is a direct-fit upgrade for 2021-2027 BMW applications covering M2, M3, M3 CS, M3 Competition, M4. It replaces the weak points of the stock part with stronger materials and better flow or cooling so heat, boost and abuse stay under control on street and track duty. AutoTalent lists verified US-market fitment in the table below.

Why upgrade

Protect your Mishimoto Performance Auxiliary Radiators from flying debris with our steel stone guards. Specifically designed for the 2021+ BMW G8X M2/M3/M4, these stone guards provide an additional layer of defense against rocks and other road debris that can cause damage to your auxiliary radiators. These kits are engineered around real chassis packaging, so hoses, coolers and adapters line up without fabrication on the listed years. Follow the published torque specs and install guide, reuse sensors where instructed, and confirm clearances if you run other supporting mods. Every unit ships with the Mishimoto Lifetime Warranty for as long as you own it.

Features

• Provides an additional layer of protection for your Mishimoto Performance Auxiliary Radiators
• Sold as a pair for complete protection
• Made with high-quality powder-coated steel
• Powder-coated finish is resistant to rust and corrosion, ensuring long-lasting protection for your radiators
• Installs onto the Mishimoto Performance Auxiliary Radiators in minutes
• Mishimoto Lifetime Warranty
• See all benefits

What's Included

• (2) Auxiliary Radiator Rock Guards
• Install Hardware
• Mishimoto Lifetime Warranty

Specifications

Fitment Notes

Verified against Mishimoto US applications and dealer listing for 2021-2027 (7 rows). Years extended to 2027 where the US model remains in production.

Vehicle Fitment