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AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z: 4-piston CP9451 Radi-CAL rear calipers and 365 mm J-Hook discs, finished in durable ENP (electroless nickel plating). Ships nationwide with expert fitment support from Diamond Parts.
Send us your VIN and we’ll confirm fitment before you buy.
When you buy AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z, you get a proven AP Racing by Essex Radi-CAL CP9451 package: 4-piston CP9451 Radi-CAL rear calipers and 365 mm J-Hook discs, finished in durable ENP (electroless nickel plating). The Z34 370Z and the newer RZ34 Nissan Z share a rear brake layout that responds well to a proper upgrade.
Shopping with Diamond Parts means secure checkout, fast tracked shipping and real people who know brakes. Looking for something different? Our big brake kit range covers dozens of vehicles, and our brakes department has pads, rotors and complete systems.
Here is what you get when you buy AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z:
| Product | AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z |
|---|---|
| Brand | AP Racing by Essex |
| Product line | Radi-CAL CP9451 |
| Position | Rear axle |
| Vehicle fitment | Nissan Z RZ34 and 370Z Z34 |
| Caliper | AP Racing CP9451 Radi-CAL (Pro5000R), rear |
| Pistons | 4 stainless steel, domed and ventilated |
| Discs | 365 x 30 mm two-piece floating J-Hook, 72 directional vanes (handed pair) |
| Hats | 6061 billet aluminium, hard anodized, fully floating |
| Parking brake | Factory parking brake retained |
| Brake lines | Spiegler stainless steel |
| Brake pads | Sold separately (DS1.11, DS2500, DS3.12, DSUNO) |
| Kit includes | Pair of calipers, pair of discs with hats and hardware, caliper brackets, brake lines, instructions |
| Finish | ENP (electroless nickel plated) |
| SKU | EE7E93DD |
When you buy AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z from Diamond Parts, the kit comes with vehicle-specific mounting brackets, so installation is a bolt-on job for an experienced mechanic or a well-equipped home garage. Bleed the system with fresh, high-temperature brake fluid, torque all caliper and bracket bolts to specification, and make sure the brake lines are routed clear of the suspension and wheels at full steering lock. Before the first drive, spin each wheel by hand to confirm there is no contact between the caliper and the inside of the rim.
After you buy AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z and fit it, the new pads and rotors need a proper bed-in to perform at their best. Start with a series of moderate stops from around 40 mph down to 10 mph, then follow with several firmer stops from higher speeds, avoiding coming to a complete stop while the brakes are hot. Finish with a gentle drive to let everything cool. This lays an even layer of pad material onto the rotor faces for smooth, quiet and consistent braking.
Before you buy AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z, think about how you drive. Street-focused compounds give quiet operation, low dust and good cold bite for daily driving, while track compounds hold up to much higher temperatures without fading. If your car sees both commutes and occasional track days, a dual-purpose pad is often the best compromise. Our team can recommend a compound based on how you drive, your tyres and your power level, so you get the most from your purchase when you buy AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z.
When you buy AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z, plan a simple maintenance routine. Check pad thickness and rotor condition regularly, especially after track use. Replace brake fluid at least once a year, or before every track season, because fluid absorbs moisture and its boiling point drops over time. Clean the calipers with mild soap and water rather than harsh wheel cleaners to protect the finish.
To learn more about the engineering behind these components, visit the official AP Racing website.
Designed for the Nissan Z RZ34 and 370Z Z34. Exact fitment can vary with model year, trim and wheel design, so send us your VIN and wheel specification through our contact page and we will double-check everything before your kit ships.
Stop guessing and start braking later. Buy AP Racing CP9451 Radi-CAL ENP Rear Brake Kit for Nissan Z and 370Z from Diamond Parts, or call (303) 418-3426 and we will help you choose the right setup.
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