Mazda MZR Single Spring/Titanium Retainer Kit

Name: Mazda MZR Single Spring/Titanium Retainer Kit
Brand: Brian Crower
SKU: brcBC0400
Price: 300.00 USD
Availability: InStock

$ 300.00 USD

Shipping calculated at checkout.

Short Description

Designed for high-rpm builds, this BC valve spring and retainer kit keeps your Mazda MZR engine stable under pressure. Built to handle serious cam lift.

Delivery and Shipping

Domestic orders typically arrive within 3-7 business days, while international orders may take 7-14 business days. Please note that additional time may be required for items that are drop shipped or back-ordered.

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Description

Take your Mazda MZR engine to the next level of performance with the Brian Crower Single Valve Spring and Titanium Retainer Kit. Built for high-rpm reliability and aggressive cam profiles, this kit is ideal for naturally aspirated or boosted builds running upgraded cams and tuning.

The BC1400 valve springs, made by PAC Racing, are crafted from premium chrome silicone alloy and engineered using proprietary heat treatment and stress relief processes to ensure consistent pressure and durability at extreme revs.

Matched with lightweight BC2400 titanium retainers, this combo delivers the ideal balance of strength and responsiveness, keeping your valvetrain in control even at elevated RPMs. With support for up to .480” (12.19mm) of net cam lift, this kit is perfect for aggressive setups that demand top-end stability.

Whether you're running Stage 2 or Stage 3 camshafts, this spring and retainer kit ensures your MZR stays reliable and responsive throughout the rev range.

Specifications

Vehicle Fitment: Mazda MZR Engines (All builds running upgraded camshafts)

Max Gains: Enhanced valvetrain stability at high RPM

Max Airflow Gains: Supports high lift cam profiles up to .480" / 12.19mm

Installation: Professional installation recommended; direct-fit with OEM spring seat

Material: Chrome silicone alloy springs (PAC Racing), Titanium retainers

Warranty: Manufacturer’s limited warranty

Origin: Made in the USA

Free Length 1.788"
Seat 1.400" @ 86 lbs
Open 1.000" @ 190 lbs
Coil Bind 0.835"
Retainer BC2400
Spring Seat OEM
Net Cam Lift 0.480" / 12.19mm