Chase Bays Stock Bore 5/8 Clutch Master Cylinder Adapter & DBBE Reservoir Kit Toyota 86 / GR86 / Subaru BRZ 2013-2025 | CB-86-CMCADAPT-625DUALRES

Product Fitment:

2013-2025 Subaru BRZ

2017-2020 Toyota 86 

2022-2025 Toyota GR86

The Chase Bays Tilton Clutch Master Cylinder Firewall Adapter is the cleanest, most effective way to install a larger bore Tilton CMC (0.625" or 0.75") in your Toyota 86, Scion FR-S, or Subaru BRZ (ZN6 chassis)—without cutting or drilling your firewall.

Perfect for engine and transmission swaps that demand higher clutch fluid volume (such as GM T56, TR6060, or Dogbox), this adapter not only provides precise engagement and improved stroke feel, but also elevates the visual appeal of your engine bay. Built from black powder-coated 1/8" steel with welded-in M8x1.25 studs, it ensures strength and ease of install.

Choose from three configuration options:

1. Adapter Only – For DIYers supplying their own Tilton CMC and fittings

2. With Tilton CMC, Clevis & AN Adapters – Saves time and ensures compatibility

3. Full Kit with Chase Bays Reservoir Setup – Includes separate clutch fluid reservoir, bracket, and EPDM hose for isolated systems (recommended for motorsport)

Please note: this product does not work with the stock clutch line, but is fully compatible with the Chase Bays Clutch Line. The only change is switching to the included 3/8-24 Banjo Bolt instead of M10x1.0.

For most users:

• Use 0.625" bore for Toyota, Subaru, Nissan, and BMW transmissions

• Use 0.75" bore for GM T56, TR6060, or Dogbox setups

Features:

• Fits ZN6 chassis: Toyota 86, Scion FR-S, and Subaru BRZ

• No firewall cutting or drilling required for installation

• Compatible with Tilton 76-Series 0.625" or 0.75" bore clutch master cylinders

• Ideal for GM T56, TR6060, Dogbox, or other heavy-duty transmission swaps

• Precision clutch stroke for improved pedal feel and engagement

• Strong and clean 1/8" (3.17mm) steel construction with black powdercoat

• Pre-welded, pressed-in M8x1.25 studs for direct fitment

• Optional full upgrade package includes CMC, clevis, AN fittings, and fluid reservoir

• Isolated clutch fluid system enhances performance under heat

• Matches Chase Bays Brake Booster Delete for unified engine bay look

• Requires Chase Bays Clutch Line (due to CMC thread size difference)