Chase Bays 5/8" Stock Bore Clutch Master Cylinder Adapter & OEMC BBE Reservoir Kit – Nissan 240SX S13 / S14 / S15

Clean up your engine bay and simplify your clutch hydraulic system with the Chase Bays Stock Bore Clutch Master Cylinder Adapter Kit for the Nissan 240SX. This kit allows you to run a Wilwood or compatible aftermarket clutch master cylinder in the factory firewall location using the stock 5/8" bore size — paired with Chase Bays’ OEM Clutch Master Cylinder (OEMC) brake booster elimination (BBE) reservoir for a clean, functional, and compact hydraulic clutch setup.

Ideal for engine swap builds, brake booster delete setups, and any S-chassis build looking to tidy up the firewall and clutch hydraulic system.

Key Features

• Stock 5/8" Bore Adapter: Mounts a 5/8" bore clutch master cylinder in the factory Nissan 240SX firewall location — retains OEM pedal feel and stroke characteristics
• OEMC BBE Reservoir: OEM Clutch Master Cylinder-style brake booster elimination reservoir — provides a clean, compact fluid reservoir solution for brake booster delete builds
• Brake Booster Elimination Compatible: Designed for use in BBE (brake booster elimination) setups — ideal for engine swap and track builds removing the factory brake booster
• Clean Firewall Fitment: Engineered for a clean, professional installation in the S13, S14, and S15 firewall — no cutting or major fabrication required
• S13 / S14 / S15 Compatible: Fits all three generations of the Nissan 240SX / Silvia S-chassis
• Chase Bays Quality: Engineered by Chase Bays — the industry standard for S-chassis engine bay plumbing and hydraulic clutch solutions

Kit Contents

• 5/8" stock bore clutch master cylinder adapter
• OEMC BBE reservoir
• Associated hardware

Specifications

• Bore Size: 5/8" (Stock)
• Reservoir Type: OEMC BBE
• Part Number: CB-N-CMCADAPT-625OERES

Fitment

• Nissan 240SX — S13 (1989–1994)
• Nissan 240SX / Silvia — S14 (1995–1998)
• Nissan Silvia — S15 (1999–2002)

Note: Clutch master cylinder not included — compatible with Wilwood and other 5/8" bore clutch master cylinders (sold separately). Professional installation recommended. Verify brake booster elimination compatibility with your specific build configuration before ordering.