Technical documents
Wilwood 140-18194 AERO4 Big Brake Rear Lug Drive Electronic Parking Brake Kit (Race), 15.00″ — Chevrolet Corvette C8 2020-2025
$4,849.99
Wilwood 140-18194 AERO4 Big Brake Rear Lug Drive Electronic Parking Brake Kit (Race) – Chevrolet Corvette C8
Wilwood’s complete AERO4 Big Brake Dynamic Rear kit with integrated Electronic Parking Brake (P/N 140-18194), engineered for the 2020-2025 Chevrolet Corvette C8 rear axle (OEM rear end, 0.00″ axle offset). This kit provides the ultimate Big Brake solution for Super Car rear axles while retaining a fully functional electronic parking brake – the unique EPB caliper delivers high torque static holding power for parking without mechanical cabling, and is supplied complete with its control unit and harness assembly to simplify installation.
AERO4 four-piston calipers use the same forged aluminum body construction and Type III Mil-Spec hard anodized finish as their AERO6 front counterparts, with Thermlock® pistons and controlled-retraction, high-temperature piston seals for consistent pedal feel. Paired with 15.00″ Lug-Drive rotors, dynamically balanced and burnished at the factory, and high-performance BP-30 compound pads (6617 plate), the AERO4 rear kit is optimized and balanced to complement the AERO6 140-18191 front kit for a complete road-race-ready C8 Corvette brake package.
Rotors mount via Wilwood’s Lug-Drive system to forged aluminum, Type III hard anodized hats, eliminating thermally-induced distortion, pad knock-back, and rotor drag for consistent brake response lap after lap. This kit may fit 19-inch and larger wheels; always check the wheel clearance diagram in the installation instructions before ordering, and confirm your rear end/axle flange configuration against the axle offset diagram.
Specifications
| Wilwood Part No. | 140-18194 |
| Kit Type | AERO4 Big Brake Rear Lug Drive Electronic Parking Brake Kit (Race) |
| Vehicle | Chevrolet Corvette C8, 2020–2025 |
| Rear End / Axle | OEM, 0.00″ axle offset |
| Caliper | 4-piston AERO4-ST radial mount w/ Electronic Parking Brake, Type III hard anodize |
| Rotor | 15.00″ x 1.25″ GT 72 curved-vane Lug-Drive, Spec-37 iron, burnished & balanced |
| Rotor Hat | Big Brake Dynamic Lug Drive – Short Offset, aluminum, Type III anodize, 0.268″ offset |
| Pad Compound | BP-30 race (6617 plate, .67″ thick) |
| Min. Wheel Diameter | 19″ (check the Wilwood wheel clearance diagram for your specific wheel) |
| Lines | Stainless steel braided flexlines included |
| EPB | Electric Parking Brake control unit & harness assembly included |
| UPC | 889545124873 |
| Sold As | Complete rear kit (both sides) |
Kit Contents
- 2 x Caliper – AERO4, Type III Anodize, EPB: Left Hand 120-18193, Right Hand 120-18192
- 2 x Rotor – GT 72 Curved Vane, Spec-37 Iron, 15.00 x 1.25″: Left Hand 160-18082-B, Right Hand 160-18081-B
- 2 x Rotor Hat – Big Brake Dynamic Lug Drive, Short Offset, 0.268″: 170-17010
- 1 x Brake Pad Set – BP-30, 6617 Plate, .67″ Thick: 150-30-6617K
Each component above is also sold separately on Formula Race Parts for replacement or spares.
Important Notes
- This is a road race kit and contains high-temperature racing pads – extended low-temperature street use will cause premature rotor and pad wear.
- Lug-Drive rotor mounting requires the 300-14913 Dynamic Lug Mount Clip & Snap Ring Kit (sold by Wilwood separately, not currently stocked by Formula Race Parts).
- Pairs with the matching 140-18191 AERO6 front big brake kit for a complete C8 Corvette road race brake package.
- WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov. Applicable to brake pads only.










