Brake Caliper - GM Metric - 1 Piston - Iron - Natural - 11.750 in OD x 1.040 in Thick Rotor - 5.46 in Floating Mount - Each

Wilwood Caliper-GM Metric D154 Iron 2.00in Piston 1.00in Disc

These all new cast, not rebuilt iron calipers are bolt-on replacements for 1978 and later GM Metric calipers widely used in "spec" racing categories and low cost disc brake conversions. Requires use of hardened Wilwood slide pins (sold separately), request part no. 230-0619 (slide pin kit) contains 4 slide pins, enough for two calipers

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

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Product Details

Reference Information

Brake Caliper, GM Metric, Cast Iron, Gray Anodized, 1-piston, Each

Wilwood GM metric series brake calipers are direct replacements for 1978 and later D154-type GM metric calipers. Weighing in at a mere 2.97 lbs., they provide a substantial weight savings over cast iron OE calipers. The real strength of these calipers comes from their triple-bridge configuration, which provides higher clamping efficiency through lower deflection. The overall results are stronger, lighter, and more efficient aluminum calipers. The caliper bodies are precision-cast, using a tight grained, high-density aircraft alloy. Stainless steel pistons provide improved fluid protection with high resistance to corrosion and low heat transfer. Each caliper is fully machined, assembled with high-temperature seals, and tested in-house by expert Wilwood technicians to ensure top quality and peak performance.