Wilwood · New
Wilwood Caliper-Forged Superlite 4 1.88/1.75in Pistons .81in Disc
MPN 120-11138 · Store SKU wil120-11138
Supplier stock checked 11/7/2026, 4:35:58 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
FSLI4 and FSLI4/ST calipers provide the pad wear performance advantages of differential bore pistons with the option for ultimate heat protection using Thermlock® pistons in the ST models. Differential piston bores compensate for leading-edge mechanical loading and temperature variances across the pad face to reduce pad taper wear in sustained high temperature applications. Thermlock® pistons in the ST models block heat transfer from the pads and reduce temperatures in the caliper, fluid, and seals by up to 25% over standard stainless steel pistons. These are the go-to calipers for all types sustained hard braking on dirt and asphalt ovals and a wide range of off-road, rally and road course applications. CALIPER,FSLI4,1.88/1.75,.810 ROTOR,L/H ANO
Manufacturer fitment & guides
Check 120-11138 against the manufacturer’s application information below.
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