Now Shipping: Radi-CAL Competition Brake Kits for the BMW G87 M2

All AP Racing By Essex Competition Brake Kit options for the G87 M2 can be found here.

Following in the footsteps of the larger G80 M3 and G82 M4, the new 2023 BMW M2 packs much of the same Motorsport-inspired DNA in a slightly more compact package. Compared to the previous F87, there's more power (453 hp and 406-lb-ft), more grip thanks to wider 285/30ZR-20 rear tires, and predictably, more weight coming along for the ride. For their ever-growing and more powerful M cars to stop as well as they go, BMW again fell back on the "sledgehammer" approach, with giant brake discs and calipers on the front axle. While the M2's 380mm iron brakes are smaller than the behemoth 400mm units on the F87 M2 Competition, you're still stuck with an abundance of excess unsprung weight. What's more, massive brake components dictate your choice in wheels and tires, and not necessarily in a good way. Road car manufacturers have been trending toward ever-larger wheel diameters for quite some time now. However, for many of our clients who actually track their cars, shaving weight on both their brakes and wheels, saving money on tires, while also having more tire choices is an all around win!

For those looking to reduce unsprung mass while also adding the ability to run smaller, lighter track wheels/tires on the front of your G87 M2, we are excited to announce our Radi-CAL Competition Brake Kits. Like other kits in our Radi-CAL product line, they feature the renowned AP Racing Pro5000R calipers paired with 372x34mm 2-piece floating discs. Proven over many thousands of track miles, our discs are highly efficient and able to absorb and shed heat far more quickly and effectively than the OEM units, while also weighing less and typically lasting longer.

WHAT ARE THE ADVANTAGES OF AP RACING BY ESSEX COMPETITION BRAKE KITS?

• Shave approximately 18 to 20 pounds of unsprung weight from your M2's front axle
• Allow you the option to run lightweight 18" track wheels and tires (use our wheel templates here to confirm fitment: CP9668 caliper / CP9660 caliper).
• Dramatically increase your brake pad options. Radi-CAL calipers use some of the most common pad shapes on the market, and every pad manufacturer makes the shape in nearly all of their compounds
• Allow you to run a 25mm (1 inch) thick pad while still fitting behind the OEM wheels. Our CP9668/372mm system features pads that are a full inch thick. No spacer is required behind OEM wheels, and as noted, you'll be able to stuff them behind many 18" wheels (depending on offset and spoke clearance).
• Even our wider CP9668 caliper package fits behind the OEM BMW Style 930M 19" front wheels without a spacer
• Every component designed to resist the heat of extended track sessions
• Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system
• Designed to work with OEM rear brakes

BMW's original equipment discs measure 380mm across with a a thickness of 36mm and 30 directional cooling vanes. This substantial piece tipped our scale at 27.9 lbs. with a significant amount of wear, meaning a new example would be at least 28 lbs. By contrast, a typical AP Racing by Essex 372x34mm disc comes in around 22 lbs., saving over 6 lbs. of unsprung weight per front rotor.

It was a similar theme with BMW's front calipers, which weighed in at 11.38 lbs. without pads:

For this application, we offer AP Racing's Radi-CAL Pro5000R calipers in either the CP9660 (18mm thick pads) or wide-format CP9668 with 25mm thick pads. In either case, they are roughly half the weight of the OEM M Compound caliper.

CP9660 Radi-CAL

This featherweight 6 piston caliper comes in at just over 6 lbs. and provides much more clearance on the top/outer side compared to the OEM unit, perfect for stuffing inside 18" wheels.

AP Racing by Essex Radi-CAL Competition CP9660 Brake Kit for BMW G87 M2:

Anodized Calipers

ENP (Electroless Nickel Plated) Calipers

• Saves approximately 20 lbs. of unsprung weight from the nose vs. the OEM Competition iron brakes
• Clears 19" OEM BMW Style 930M wheels without a spacer
• Features AP Racing CP9660 Radi-CAL Pro5000R 6 piston calipers
• 372x34mm, 72 vane AP Racing J Hook discs
• Ventilated, domed back, stainless steel pistons keep heat out of the brake fluid and provide an ultra-firm pedal

Though significantly wider than its little brother, the CP6668 isn't much heavier at 6.6 lbs. (configured below with the included Quick-Change Brake Pad Spring Clip).

CP9668

AP Racing by Essex Radi-CAL Competition CP9668 Brake Kit for BMW G87 M2:

Anodized Calipers

ENP (Electroless Nickel Plated) Calipers

• Saves approximately 18 lbs. of unsprung weight from the nose vs. the OEM Competition iron brakes
• Clears 19" OEM BMW Style 930M wheels without a spacer
• Features AP Racing CP9668 Radi-CAL Pro5000R 6 piston calipers
• 372x34mm, 72 vane AP Racing J Hook discs
• CP9668 calipers use a 25mm thick, commonly available brake pad shape
• Ventilated, domed back, stainless steel pistons keep heat out of the brake fluid and provide an ultra-firm pedal

Both caliper sizes are available in our traditional Hard Anodized finish, as seen below. ***Note: the center hat portion of the pictured disc below is a prototype unit in bare, un-anodized aluminum.

New Electroless Nickel Plated (ENP) Caliper Option:

We now have the highly anticipated ENP finish option available for both caliper sizes as well. This jewel-like finish is incredibly durable and easy to clean.