Core Features
- Direct GM Metric Caliper Replacement
Designed as a drop-in upgrade for vehicles using original GM S‑10/metric front calipers—no modifications required. - 20 % Larger Piston Bore
Boasting a 2.75″ (70 mm) bore—about 20 % larger than standard GM metric calipers—for significantly improved stopping force. - Reversible Caliper
Can be installed on either side of the vehicle. Both the bleeder screw and brake hose use a 10mm x 1.5 thread, just be sure the bleeder is positioned at the top when mounted.
Construction & Finish
- Durable Cast-Iron Body
Rugged cast-iron build ensures longevity; available in natural or powder-coated red & black finishes for extra protection. - Smooth Casting Ideal for Finishing
Clean cast surface is ready for chrome or powder coating—great for custom builds.
Hardware & Specs
- Loaded Calipers: Pads & Pins Included
Each caliper comes complete with D154 pads, clips, slide pins, banjo bolt (10 mm × 1.5), washers, and bleeder screws. - Banjo Bolt Size
Standard 10 mm × 1.5 banjo bolt compatible with GM metric setups. - Sold in Pairs
Left/right pairs priced around $139 (black powder-coated) or $99 each each for powder coated red (single).
Performance & Benefits
- Enhanced Braking
Larger pistons deliver more pad force with better modulation and reduced fade. - Simpler Maintenance
Dual bleeders make bleeding easier and eliminate the risk of side mix-up. - Long-Term Durability
Users report strong, reliable performance well after long-term use.
Compatibility & Fitment
- Vehicle Fitment Examples:
- 1978–1988 Chevy Midsize & 1983–2002 Chevy S‑10 trucks (GM Metric).
- Broad application across GM metric IFS systems (Mustang II spindles, classic Chevy trucks, etc.).
- Complete Kit Availability:
Also available in Big Brake Kit versions with larger calipers (52 mm twin pistons), rotors, hubs, hardware, and hoses for full upgrades.
Summary Table
| Feature | Details |
|---|---|
| Piston Diameter | 2.75″ (~70 mm) |
| Bore Increase | 20 % over stock |
| Bleeder Screws | Dual – both sides bleeder |
| Material | Cast iron |
| Finishes | Natural / powder coat (black/red) |
| Hardware Included | Pads (D154), clips, pins, banjo bolt, washers, bleeders |
| Banjo Bolt Size | 10 mm × 1.5 |
| Price (Pair) | Details |
| Warranty | Standard CPP limited warranty |
Why Choose Big Bore?
- Noticeably stronger braking with improved modulation.
- Simplified installation & bleeding, especially helpful for DIYers.
- Finished aesthetics tailored for custom builds.
- Turnkey solution with all hardware included—no need for extra parts.
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