StopTech C-43/28-32/20.6 Radial Trailing Left BBK Replacement Caliper

The StopTech C-43 is a high-performance, ultra-lightweight, 4-piston forged aluminum caliper designed for racing and track use. It is significantly lighter than the StopTech ST40 caliper (approximately 50% lighter). This specific MPN, 379.GS0.24C3N, refers to a left-side radial trailing caliper meant as a replacement component within a StopTech C-43 Big Brake Kit (BBK).

Key features of the C-43 caliper (as found in associated BBKs):
* **Piston Configuration:** For Honda S2000 and Acura Integra Type-R (DC2R) applications, the C43 caliper utilizes a 36mm / 42mm piston bore. The "28-32/20.6" in the MPN likely denotes specific piston sizes or a rotor compatibility specification, though a precise breakdown of this code was not explicitly found.
* **Pad Compatibility:** The C43 caliper uses a DR21 pad shape, which is a common pad shape and offers about 11% more volume than ST40 caliper pads. Compatible pad shapes are shared with AP and Wilwood calipers (e.g., Hawk HB521, Pagid 8195 or 2205, and PFC 7751).
* **Design:** Features a single bridge bolt for weight savings and reduced pad change times.
* **Dust Boots:** C43 calipers do not typically include dust boots, indicating they are primarily intended for track or race applications where dust boot degradation is less of a concern than maximum performance.
* **Weight:** Approximately 68oz (~4.25 lbs) per caliper.
* **Rotor Compatibility (from associated kits):** Designed to work with 2-piece rotors, often with dimensions around 309x32mm, featuring StopTech's patented Aerorotor directional vaning pattern.
* **Wheel Clearance (from associated kits):** Typically fits under 17-inch wheels.