RPM Front Spring Retainer Cups – RZR Pro R & Turbo R

Fix a known weak point and level up your suspension durability with the RPM Front Lower Spring Retainer Cups for the Polaris RZR Pro R, Turbo R, and Pro S. Built from CNC-machined 6061 billet aluminum, these retainers are nearly 6x stronger than the factory cast parts and are designed to eliminate premature failure under aggressive use.

Unlike the fragile OEM #5634675 units, RPM’s upgraded cups feature increased wall thickness and expanded spring contact surface, giving your front coil springs (OEM or aftermarket) a stronger, more stable base. Whether you're running factory tuning forks or RPM's HD shock forks, these retainers are engineered for direct fitment and maximum performance under load.

Perfect for high-speed desert riders, rock crawlers, or anyone pushing their RZR to the limit—these cups are a must-have upgrade for long-term reliability.

✅ Key Features:

• 🔧 Replaces OEM #5634675
• 🛡️ 6x stronger than stock cast retainers
• 🧱 CNC-machined from 6061 billet aluminum
• 🌀 Increased spring surface area – ideal for factory or aftermarket springs
• ⚙️ Works with OEM & RPM HD front tuning forks
• 🧰 Sold as a set (left + right) – ready for immediate install
• 🚫 No modification required – 100% bolt-on replacement

📍 Fitment:

• ✅ 2022–2025 Polaris RZR Pro R (All Trims)
• ✅ 2022–2025 Polaris RZR Turbo R (All Trims)
• ✅ 2025 Polaris RZR Pro S

Don’t let a weak link in your suspension stop you short. Reinforce your RZR with RPM’s billet retainer cups—trusted by performance riders and race builds alike.