If you're looking to upgrade your Nissan 350Z's braking system, you might want to check out the ISR Performance Brake Line Kit. I’ve been through my fair share of brake line upgrades, and let me tell you, this kit stands out. ISR has been around the sport compact scene for a while, and they really know their stuff. They’ve poured years of research and track testing into their products, ensuring that what you get is reliable and well-made. It’s not just about slapping a brand name on something; they actually test their products on real vehicles before they hit the market.

This kit comes with everything you need to make the switch: two front brake lines, two rear brake lines, four banjo bolts, and eight crush washers. It’s designed specifically for the Nissan 350Z from 2002 to 2007, so you know it’ll fit perfectly. The quality is solid, and the price? Well, it’s pretty hard to beat. ISR has a knack for blending quality with affordability, which is a rare find in this game.

Now, let’s talk installation. I’d recommend having a pro mechanic handle this one unless you’re pretty confident in your skills. You’ll need to raise the vehicle, remove the wheels, and drain the brake fluid. Be careful when removing the old lines—nobody wants brake fluid splashing on their paint job. Make sure to keep track of any clips and banjos you remove, and don’t forget to clean the sealing surfaces before you fit the new lines.

When you’re fitting these lines, start at the caliper and follow the original path of the OEM lines. Use the new crush washers provided in the kit, and make sure everything is aligned properly. It’s crucial that the hoses aren’t kinked or twisted; they should run parallel without any tension on the connections. After everything’s in place, tighten the banjo bolts and fittings to the manufacturer’s torque specs—typically around 12 to 14 ft/lbs.

Once you’ve got everything tightened up, it’s time to bleed the brakes. Make sure you’re using fresh DOT-approved brake fluid and follow your vehicle’s bleeding instructions. Before you take your Z for a spin, double-check all your connections to ensure there are no leaks. You want that brake pedal to feel firm, not spongy. And after your first 100 miles, do another check to make sure everything’s still tight.

Just a quick heads-up: mixing rubber hoses with stainless steel lines isn't recommended, so keep that in mind. Also, don’t try to force or stretch any of the stainless steel hose assemblies; that could lead to failure.

In summary, if you’re serious about your Nissan 350Z and want a brake line upgrade that combines quality with a fair price, the ISR Performance Brake Line Kit is worth considering. It's legal for competition vehicles, so if you’re racing or just want to ensure your ride is ready for the track, this kit has you covered.

• Fitment: Nissan 350Z 2002-2007
• Note: Legal only for use in competition vehicles that may never be registered or used on public streets.