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Description
1978-1988 Regal S4 Brake System Front 4301438BFits 1978 88 GM G body Vehicles (Comes Assembled on Stock Height Spindles) Features: 2 Piece, 4 Piston, S4 Caliper Manufactured in Phoenix, AZ CNC Machined from US Sourced Forged or Billet Aluminum Powder Coated Finish Hard Anodized Aluminum Pistons, Stainless Steel Abutments and Noise Suppression Clips Dual Seals, Dust Weather & Pressure 2 Piece Slot, Drilled, Zinc Plate Rotor Specs: Applications GM G Body 78 88 Axle Front Brand Baer Brakes Caliper
Fits 1978-88 GM G-body Vehicles (Comes Assembled on Stock Height Spindles)
Features:
- 2-Piece, 4-Piston, S4 Caliper Manufactured in Phoenix, AZ
- CNC Machined from US Sourced Forged or Billet Aluminum
- Powder Coated Finish
- Hard Anodized Aluminum Pistons, Stainless Steel Abutments and Noise Suppression Clips
- Dual Seals, Dust/Weather & Pressure
- 2-Piece Slot, Drilled, Zinc-Plate Rotor
Specs:
| Applications | GM G-Body 78-88 |
|---|---|
| Axle | Front |
| Brand | Baer Brakes |
| Caliper | S4 |
| Caliper Color | Black |
| Disc Brake Caliper (Front) Piston Quantity | 4 |
| Disc Brake Caliper (Front) Type | Fixed |
| Disc Brake Pad FMSI Number | DR1 |
| Disc Brake Rotor (Front) Construction | Vented |
| Disc Brake Rotor (Front) Outside Diameter | 11.000IN |
| Emission Code | 6 |
| Export Description | Brake Components |
| Fitment Notes | Comes Assembled on Stock Height Spindles |
| Grade Type | Performance |
| Hose Material | Stainless Steel |
| Includes Spindles | Yes, Stock Height |
| Lug Count | 5 Lug |
| Min Wheel Dia (verify using template) | 15IN |
| Product Line | 11 Inch SS4+ |
| Product Type | 11 Inch SS4+ Front Brake Kit |
| Prop 65 (C, R or CR) | CR |
| Prop 65 - Long Label | WARNING: This product can expose you to chemicals including Toluene Diisocyanate, and Nickel which are known to the State of California to cause cancer. For more information, visit www.P65Warnings.ca.gov |
| Prop 65 Yes/No | Yes |
| Rotor Thickness | 1.020IN |
| Rotor Type | 2-Piece |
| Surface Type | Slotted, Drilled & Zinc Plated |
| System Notes | Comes pre-assembled on modified stock spindles, Widens track width .400" per side |
| Template | S125A |
| Title | S4 Brake System Front |
| Wheel Lug/Bolt Pattern | 5x4.75 |
| Wheel Stud Size | M12-1.50 x 51.5mm |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1978-1988 | Buick | Regal | |
| 1978-1987 | Chevrolet | El Camino | |
| 1978-1983 | Chevrolet | Malibu | |
| 1978-1988 | Chevrolet | Monte Carlo | |
| 1978-1981 | Oldsmobile | Cutlass | |
| 1985-1988 | Oldsmobile | Cutlass | |
| 1978-1988 | Oldsmobile | Cutlass Supreme | |
| 1978-1988 | Pontiac | Grand Prix |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 2218 reviews
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Product Reviews
★★★★★ 5
“Wonder”ful Bra!
Special Size: without Contrast Trim, Size: Large, Color: Bright Red
These (I have several in great colors. This one is red). I love it- looks neat and polished under anything you pair it with! Comfortable and quite soft!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
★★★★★ 4
Tight band
Special Size: without Contrast Trim, Size: Small, Color: Black
The band is a little tight on my ribs but not uncomfortable enough not to wear it. I would suggest sizing up
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Pretty and supportive
Special Size: without Contrast Trim, Size: Medium, Color: Ocean Blue
Very pretty and supportive. Love the blue. Perfect length for higher waisted leggings.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
★★★★★ 5
Nice quality at a great price
Special Size: without Contrast Trim, Size: X-Large, Color: Emerald Green
Fits a little loose
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
★★★★★ 3
Cute, comfy, crawly
Special Size: with Contrast Trim, Size: X-Large, Color: Navy/White
Shorts climb up my legs like crazy when I walk or jog. Aside from that its cute and comfy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 28, 2025
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