Wilwood Caliper-Narrow Superlite 4R - Red 1.75/1.75in Pistons 1.25in Disc 2017-bmw-m4-esi2747850 Our Race Line fans were

Our Race Line fans were designed for heavy-duty applications where a Slim Line fan just won't cut it

The valve seat ensures a tight seal and improved response

this can lead to carbon buildup on valves and reduce octane levels in the combustion chamber by introducing oil to the air/fuel mixture

Even with these new design components

5in Vented Remote Mount Fuel Filler

Wilwood Caliper-Narrow Superlite 4R - Red 1.75/1.75in Pistons 1.25in Disc 2017-bmw-m4-esi2747850 Our Race Line fans wereThe Forged Narrow Superlite 4R (FNSL4R) is our newest version for the venerable Superlite caliper series adds the versatility and convenience of radial mounting to this widely popular caliper group. Radial mounting simplifies adaptation and provides two planes of adjustment for accurate alignment over the disc. These calipers integrate "Big Brake" style with Wilwood's latest technology to generate big stopping power in extreme environments over a