BRAKES | CALIPERS | STREET | DRAG | TRACK
COMING TO A STOP
WILWOOD BRAKES
XRC4R NEXT GENERATION FORGED RACE CALIPERS Wilwood’s Next Generation XRC4R race calipers combine decades of race experience, advanced computer finite element analysis, and state-of-the-art machining into a lighter, stiffer race caliper. Premium-grade, stress-flow forged billet aluminum creates a superior caliper with better rotor and brake fluid cooling.
FEATURES: XRC4R/ST • Unique center X-bridge strengthens caliper without adding mass or obstructing airflow • FEA design and precision machining results in a caliper weighing just • 4.11 pounds - 25% less than a comparable Wilwood Superlite • Innovative body design leaves material where it is most needed to reduce deflection and removes it from everywhere else • Durable aluminum-oxide ceramic Type III hard-anodized finish 48
• Staggered-bore piston front calipers provide more even engagement, consistent feel, and improved pad wear • Thermlock® thermal barrier pistons and high-temperature seals for reduces heat transfer to fluid • Internal dampening springs control piston knock-back without sacrificing unneeded friction • Single-point bleed technology with low-profile bleed screws provide for a more efficient bleed process • Uses 0.80”/20.3mm thick brake pads for extended life; available in three high-friction, fade-resistant race compounds • Pads retained by two no-bind pins for improved release and less drag • Models for 0.81” or 1.25” width rotors and three piston bore sizes cover front and rear applications
VOLUME: 5 | ISSUE 8 | 2021
