Description
Part Number: BC0040SX
Brian Crower Dual Valve Spring & Steel Retainer Kit
Engineered for high-RPM reliability and maximum valvetrain control in Honda K20A, K20Z, K24, F20C, and F22C engines.
Key Features
- ☑ PAC Racing Spring Alloy: Wound from super-clean, high-grade chrome silicone alloy for consistent pressure under extreme high-RPM loads.
- ☑ Steel Alloy Retainers: Premium BC2011 steel retainers engineered for long-term durability in high-mileage street and track applications.
- ☑ Dual Spring Configuration: Inner and outer spring combination prevents valve float and erratic valve movement at high revs.
- ☑ Direct Fitment: Designed to fit directly into standard spring locations on Honda K-Series and F-Series cylinder heads.
Technical Specifications
| Manufacturer | Brian Crower (BC) |
|---|---|
| Part Number | BC0040SX |
| Engine Compatibility | Honda / Acura K20A, K20Z, K24, F20C, F22C |
| Spring Part Number | BC1040 (Dual Spring) |
| Retainer Part Number | BC2011 (Steel Alloy) |
| Seat Pressure | 1.590″ @ 80 lbs (K20) / 1.580″ @ 84 lbs (F20C) |
| Open Pressure | 1.110″ @ 250 lbs (K20) / 1.100″ @ 250 lbs (F20C) |
| Coil Bind | 1.030″ |
What’s Included in the Box
- 16x Brian Crower Outer Valve Springs (BC1040)
- 16x Brian Crower Inner Valve Springs (BC1040)
- 16x Brian Crower Steel Alloy Valve Retainers (BC2011)
Brian Crower is globally recognised for setting the standard in high-performance valvetrain components. When purchasing your BC valvetrain hardware through JP Racing, you receive 100% authentic motorsport parts backed by expert UK technical support and fast UK dispatch.






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