Forged S/L RH 1.88/1.75/ 1.25

The Wilwood Forged S/L RH 1.88/1.75/1.25 (part number 120-11329) is a four-piston aluminum brake caliper engineered for high-performance vehicles requiring precise stopping power and thermal management. This right-hand passenger-side unit features a gray anodized finish and is designed to work with 13.060-inch OD rotors at 1.380 inches thick, making it ideal for performance street and track applications where brake fade resistance and modulation matter.

Weighing 5.35 lbs, this caliper delivers the lightweight construction that Wilwood is known for without sacrificing structural integrity. The four-piston design distributes clamping force evenly across the pad surface, reducing uneven wear and extending rotor life. The 3.500-inch lug mount accommodates standard brake configurations on modern performance platforms. Wilwood's forged aluminum construction provides excellent heat dissipation—critical for vehicles subjected to repeated hard braking during spirited driving or track days where sustained high temperatures can compromise standard cast-iron designs.

This caliper is suited for owners upgrading brake systems on performance vehicles, street rods, or restoration projects where modern stopping capability is essential. The passenger-side orientation and right-hand configuration make this suitable for vehicles requiring asymmetrical brake caliper installation or performance vehicles with specific suspension geometry constraints. Compatibility with the specified rotor dimensions ensures proper fit and alignment in systems already configured for this performance brake platform.

Wilwood brake components are recognized in the aftermarket performance market for engineering precision and durability under demanding conditions. When upgrading braking systems, matching caliper geometry, rotor specifications, and pad composition is critical to avoid system imbalance and premature wear. The dimensional specificity of this unit—the piston bore ratios implied by the 1.88/1.75/1.25 designation—reflects Wilwood's attention to hydraulic force distribution for consistent brake feel and response.