These are all new and not rebuilt, cast iron calipers, purpose built for racing. Wilwood’s GM Metric Calipers are bolt-on replacements for 1978 and later GM Metric calipers widely used in "spec" racing categories. Wilwood’s new 2.50” piston GM Metric calipers are now officially approved for IMCA as OEM replacement caliper that meet all rules in Modified, Stock Cars, Hobby Stocks, Northern and Sothern Sport Mods. The GM Metric caliper is also available in 2.75” and 2.00” piston sizes for use in other non-restricted series or applications. Calipers require use of hardened Wilwood slide pins (sold separately), request part no. 230-0619 (slide pin kit) that contains 4 slide pins, enough for two calipers.
Wilwood Disc Brakes Announces New GM Metric Caliper and Receives IMCA Approval
Wilwood's Racing division has announced the release of a new GM metric cast-iron brake caliper, which was awarded IMCA (International Motor Contest Association) approval for use by its members in competition. The caliper is purpose-built for racing and is equipped with high-temperature seals, a large 2.50" piston bore, and accommodates 11.00" or 11.75" rotors up to 1.04" wide. Dual symmetrical bleeder locations eliminate the need for carrying multiple spares as the calipers may be right or left mounted.
Flyer: fl503.pdf
GM METRIC D154 IMCA-LEGAL OEM REPLACEMENT CALIPER
Flyer: fl531.pdf
BLEEDING INSTRUCTIONS - D154 GM-METRIC CALIPERS
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