Fitment questions?
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Product details
This four-piece kit contains square piston seals with a 1.250-inch listed inside diameter. The 0.099-inch section and manufacturer material code 210M identify its service specification. Wilwood documents the kit for matching calipers, including the 1.25-inch DynaPro service arrangement shown in FL119. Founded in 1977 by Bill Wood, Wilwood Engineering is based in Camarillo, California. Its disc brake systems and components serve motorsport, street-performance and specialized applications. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are among its products, selected according to the complete brake system’s requirements.
Technical Details
- Manufacturer part number: 130-2479
- Service component: Caliper Square Ring Kit
- Seal profile: Square-Ring
- Manufacturer-listed seal inside diameters: 1.250 inches
- Listed seal thickness: 0.099 inch
- Manufacturer material code: 210M
- Pack quantity: 4 Pack
- Seal fluid compatibility: DOT 3, DOT 4 and DOT 5 as specified for these seals. Follow the complete caliper and vehicle fluid requirements; do not mix silicone DOT 5 with DOT 3, DOT 4 or DOT 5.1.
Fitment & Compatibility
Verify the installed caliper’s replacement-kit reference instead of assuming every 1.25-inch piston uses the same seal. Match the square groove and the stated ring thickness before assembly. Inspect any separate dust boots and other rubber components according to the caliper’s full parts list; they are not established by a piston-seal pack.
PMB Performance has over 20 years of experience helping customers with brake and parts fitment. Share the installed component identification and relevant measurements when requesting assistance.
