Description
Take your braking performance to the next level with the Allstar Performance GM Metric Brake Caliper (ALL42084) — a brand-new, direct-fit replacement built tough for serious driving. Crafted from durable cast iron, this left-hand (driver side) caliper delivers consistent, reliable stopping power that your classic GM deserves. Whether you’re building a race car or restoring a street machine, this is the no-compromise upgrade you’ve been looking for.
- Part Number: ALL42084
- Position: Driver Side (LH)
- Fitment: GM Metric, 1978–1987
- Piston Count: Single piston
- Bore Size: 2.375 in.
- Material: Cast iron
- Finish: Natural
- Max Rotor Thickness: 1.000 in.
- Mount Style: 5.460 floating mount
- Sold As: Individual caliper
Allstar Performance has long been a trusted name among racers and enthusiasts alike, and this metric caliper is no exception. It’s a straightforward, bolt-on solution compatible with most GM vehicles from that era — so you can spend less time wrenching and more time driving. Ditch the worn-out factory hardware and roll with confidence knowing your brakes are backed by Allstar’s reputation for quality.






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