BK Racing

BK Racing Performance Ecotec Valve BUNDLE | Intake & Exhaust

$499.99

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Variation Standard / Stock Base Circle Reduced Base Circle / Regrind

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Complete BK Racing Ecotec Performance Valve Set

The BK Racing High-Performance Ecotec Intake & Exhaust Valve Set combines our purpose-developed intake and exhaust valves into one complete 16-valve performance Ecotec valve set for GM 2.0L, 2.2L and 2.4L Ecotec engines.

These are not simply replacement valves made from a different material. Both the intake and exhaust valves were developed specifically for performance Ecotec applications with a focus on airflow, durability, reduced unnecessary mass, and improved valve geometry.

Manufactured from 21-4N stainless steel and fully nitrided after final machining, this package gives engine builders a complete matched intake and exhaust valve solution designed for high-performance, racing, and high-RPM Ecotec engines.

Developed and Flow-Bench Tested

We approached the intake and exhaust sides individually because they have different jobs.

The HF35.6 intake valve was developed with an emphasis on curtain area and low-lift airflow, rather than simply installing the largest valve possible. During prototype testing with MWR Technologies, the BK Racing intake design demonstrated approximately 10 CFM more airflow than the OEM intake valve at .050" lift.

Our performance exhaust valve was developed around efficient exhaust flow, strength, and durability under sustained racing conditions. During flow-bench development with MWR Technologies, the BK Racing exhaust design also outflowed the OEM exhaust valve.

Rather than relying on theoretical improvements, both sides of the BK Racing Ecotec valve package were developed using actual flow-bench testing.

21-4N Stainless Steel with Full Nitriding

Every valve in the 16-piece package is manufactured from 21-4N stainless steel, a high-strength valve material well suited to demanding performance applications.

The finished valves receive a full nitrided treatment after final machining. This provides a hardened, wear-resistant surface without machining away the treated surface afterward.

The nitrided finish extends throughout the valve, including critical stem, keeper, and tip areas.

Two Intake Valve Configurations

The intake side is available in two configurations depending on the camshaft being used:

Standard / Stock Base Circle — For factory cams and aftermarket camshafts retaining stock-style base-circle geometry.

Reduced Base Circle / Regrind — Provides additional valve-tip height for combinations using reduced-base-circle or reground camshafts, giving the engine builder additional geometry to work with when setting up the valvetrain.

This allows the valve package to work with a much wider range of Ecotec cylinder-head and camshaft combinations without compromising the design of the valve itself.

Complete 16-Valve Ecotec Package

Each package includes:

8 BK Racing HF35.6 Performance Intake Valves
8 BK Racing Performance Exhaust Valves
21-4N stainless-steel construction
Full nitrided treatment
Airflow-focused intake and exhaust geometry
Undercut stems
OEM-style triple keeper grooves
Flat combustion-side valve faces
100% inspected valves
Matched sets
Standard or Reduced Base Circle/Regrind intake configuration
Developed and flow-bench tested with MWR Technologies

Designed as a Complete Ecotec Valvetrain System

For more demanding combinations, pair the BK Racing intake and exhaust valves with our 83 lb Ecotec Valve Springs, Lightweight Titanium Retainers and Solid Lash Adjusters.

Together, these components allow builders to address the valve, spring, retainer, and lash-control system as a complete package rather than upgrading one component at a time.

Applications

Designed for compatible GM 2.0L, 2.2L and 2.4L DOHC Ecotec cylinder heads, including performance and racing applications based around the L61, LAP, LE5, LE9, LSJ, and LNF engine families.

Ideal for:

Naturally aspirated • Turbocharged • Circle track • High-RPM • Performance street • Competition Ecotec builds

Why BK Racing?

There were already plenty of Ecotec valves on the market.

Our goal wasn't to make another set.

We wanted to develop an intake and exhaust combination specifically around the Ecotec cylinder head, test the designs, and offer them together as a complete performance valve package.

16 valves. One complete Ecotec package. Developed for airflow. Built for performance.

Continue Learning About Ecotec Exhaust Valves

Building the right Ecotec valvetrain involves more than choosing a single valve. Exhaust-valve material, head and stem geometry, valve springs, retainers, lash adjustment and camshaft geometry all work together—especially in sustained high-RPM racing applications. If you're putting together a complete combination, explore the guides below and see how components such as the BK Racing Ecotec Exhaust Valves, BK Racing 83 lb Valve Springs, BK Racing Lightweight Titanium Retainers and BK Racing Solid Lash Adjusters fit into the complete Ecotec valvetrain.

Stock vs Performance Ecotec Exhaust Valves: What Actually Changes?

Learn what really separates an OEM replacement valve from a purpose-built performance exhaust valve, including material, nitriding, backside geometry, stem design, margin and intended operating environment.

Do Performance Ecotec Exhaust Valves Increase CFM? Our Ecotec Flow-Bench Testing

See what we learned from back-to-back Ecotec flow-bench testing, including why larger valve diameter didn't automatically produce more airflow and how the finished BK Racing Ecotec Exhaust Valve compared with the stock baseline.

Ecotec Exhaust Valve Size Guide: Stock Diameter, Stem Size & Applications

Compare stock and aftermarket Ecotec exhaust-valve head diameters, stem sizes, overall lengths and applications across the L61, LAP, LE5, LE9, LSJ and LNF engines.

21-4N Stainless vs Inconel vs OEM Ecotec Exhaust Valves

Understand the differences between OEM valve materials, 21-4N stainless and Inconel—and why the BK Racing Ecotec Exhaust Valve uses fully nitrided 21-4N stainless for the naturally aspirated, sustained-RPM racing applications it was developed around.

Why Exhaust Valve Shape Matters: Tulip, Back-Cut, Margin & Stem Geometry

Learn how the valve itself becomes part of the airflow path and why tulip shape, back-cut, margin, head thickness and stem geometry can matter just as much as valve-head diameter.

Stock Ecotec Exhaust Valves at High RPM: What Are the Limitations?

See what changes when a production Ecotec valvetrain is subjected to sustained racing RPM and why exhaust valves, BK Racing 83 lb Valve Springs and lightweight retainers should be considered as parts of the same system.

Undercut Valve Stems: Can They Improve Ecotec Exhaust Flow?

Learn how reducing the exposed portion of an exhaust-valve stem can decrease obstruction in the port and why the BK Racing Ecotec Exhaust Valve uses an undercut stem with a smooth transition into the backside of the valve.

Ecotec Valve Springs, Exhaust Valves & RPM: Building the Valvetrain as a System

Go deeper into the relationship between valve mass, spring pressure, installed height, cam profile, retainers and RPM, including how the BK Racing 83 lb Valve Springs, BK Racing Lightweight Titanium Retainers, performance valves and BK Racing Solid Lash Adjusters can be combined into a complete racing valvetrain.