Description
Brian Crower +1mm Oversize Stainless Steel Exhaust Valves (29mm) – Honda B16A / B18C
Premium heat-resistant 21-4N stainless steel exhaust valves engineered for high-RPM and turbocharged Honda B-series VTEC engines.
Product Overview
The Brian Crower BC3015 valve set delivers exceptional airflow and structural reliability for high-performance Honda B-series engines. Built specifically for Honda and Acura B16A, B17A, and B18C DOHC VTEC cylinder heads, these +1mm oversize (29mm head diameter) exhaust valves significantly increase curtain area and flow velocity. Each valve is manufactured from one-piece forged 21-4N stainless steel, featuring a friction-welded Stellite tip to prevent stem wear, a swirl-polished dished head for weight optimization, and an undercut stem above the head area to maximize air/fuel charge velocity and exhaust gas evacuation under extreme racing conditions.
Key Features
- ☑ +1mm Oversize 29mm Head: Increases curtain area for enhanced cylinder scavenging and reduced backpressure.
- ☑ 21-4N Stainless Steel Construction: Premium heat-treated alloy designed to withstand continuous high boost and high-RPM combustion temperatures.
- ☑ Undercut Stem Design: Reduces valvetrain weight for extended RPM stability while smoothing air and exhaust flow dynamics.
- ☑ Stellite Friction-Welded Tip: Ensures maximum durability at the rocker arm contact point to prevent wear and tip deformation.
- ☑ Swirl Polished Finish: Fully CNC-machined and swirl-polished dish face reduces carbon accumulation and optimizes gas flow.
Technical Specifications
| Manufacturer | Brian Crower (BC) |
|---|---|
| Part Number | BC3015 |
| Valve Type | Exhaust (Dished Head) |
| Head Diameter | 29.0mm (+1.0mm Oversize) |
| Stem Diameter | 5.45mm |
| Overall Length | 102.5mm |
| Material | 21-4N Stainless Steel with Stellite Tip |
| Engine Fitment | Honda / Acura B16A, B16A2, B16A3, B17A, B18C, B18C1, B18C5 DOHC VTEC |
| Quantity Supplied | Set of 8 Valves |
What’s Included in the Box
- 8x Brian Crower BC3015 Stainless Steel Exhaust Valves (29mm / +1mm Oversize)
When upgrading valvetrain components for competitive motorsport or high-boost street builds, Brian Crower products represent industry-leading precision engineering. JP Racing proudly supplies genuine Brian Crower products directly from our UK warehouse, offering express nationwide delivery and dedicated technical support for your engine build.
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