10/14/2026
As we begin phasing out our previous master cylinder supplier, our Clutch Master Cylinder Adapter Kits will now begin shipping with the NEW Chase Bays Single Piston Master Cylinders! After over a year of development and testing, we're excited to start introducing our own redesigned master cylinders across our product lineup. This gives us more control over quality, consistency, and long-term support while continuing to improve the products we offer.
The Chase Bays Clutch Master Cylinder Adapter is the cleanest, most complete solution for upgrading / replacing your OEM Clutch Master Cylinder.
We offer this product for multiple chassis! (listed as pictured)
• Nissan 240sx / Silvia S13 / S14 / S15
• 94-01 Integra / 92-00 Honda Civic / S2000
• Mazda FC / FD RX7
• Lexus IS300 / SC300 / Supra
• Nissan Skyline R32 / Nissan Z32
• Nissan 350Z / G35
• Toyota Chaser / Mark II / Cresta / AE86 Corolla
• Toyota 86 / GR86 / BRZ
• Nissan Skyline R33 / R34 RWD
It’s made from 1/8” (3.17mm) thick powdercoated steel, with pressed and welded M8x1.25 studs for a rock-solid, OEM-style install. No guesswork. No drilling. Just a precise fit that works.
Choose from three options based on your build needs:
Adapter Only – Just the firewall plate. Great if you already have a master, fittings, clevis, and reservoir.
Adapter + Master Cylinder Kit – Adds a CMC in your choice of 0.625” or 0.75” bore, plus all AN fittings and clevis to adapt to your factory pedal.
Full Add-On: Reservoir, Bracket & Hose – Adds our standalone Chase Bays Clutch Fluid Reservoir, mounting bracket, and EPDM feed hose for external mounting. Isolating the clutch fluid system from the brakes is critical for track use, you don’t want heat or failure shared between circuits.
These kits do NOT work with OEM clutch lines, but they do work with the Chase Bays Clutch Lines. When you choose the "ADD Master Cylinder:" option, we include the correct 3/8-24 banjo bolt, so you just swap that in place of your M10x1.0 and you’re good to go.
If you’re looking for better pedal feel, a cleaner engine bay and a setup built for track abuse, look no further!
Head over to our website, ChaseBays.com to learn more!