Brian Crower BC1050 High-RPM Single Valve Spring Kit for K20A3 / K24A

Vehicle Fitment

• 2002-2005 Honda Civic Si K20A3
• 2002-2006 Honda CR-V K24A1
• 2002-2006 Acura RSX Base K20A3

Fitment Notes

• K20A3/K24A1 engine codes specifically
• Compatible retainer: BC2050
• Single spring design, not dual
• Compatible with stock or aftermarket camshafts within spec

Features

• Wound from highest grade, super clean chrome silicone alloy
• Proprietary processing (chamfer, debur) for consistent long-term pressure
• Designed for high-RPM, high-mileage use
• Prevents premature valve float
• Precise, consistent spring rate across the set

Specifications

• Spring type: Single
• Free length: 1.879"
• Seat load: 78 lbs. @ 1.567"
• Open load: 206 lbs. @ 1.100"
• Coil bind: 0.972"
• Compatible retainer: BC2050
• Max net cam lift: 0.520" / 13.2mm

Included Components

• 16x Single valve spring

Product Description

The Brian Crower BC1050 is a complete set of 16 single valve springs engineered specifically for the K20A3/K24A1 engine found in the 2002-2006 Honda CR-V, 2002-2005 Civic Si, and 2002-2006 Acura RSX Base. Designed for high RPM use, these springs are wound from only the highest grade, super clean chrome silicone alloy and put through proprietary processing procedures to maintain consistent spring pressure over long-term, high-RPM operation.

Quality valve springs are critical to preventing premature valve float, and this single spring design delivers a seat load of 78 lbs. at 1.567" and an open load of 206 lbs. at 1.100", supporting up to 0.520" (13.2mm) of net cam lift -- enough headroom for a stock or moderately upgraded camshaft without risking coil bind. This set is designed to work with Brian Crower's BC2050 retainer for a complete, properly matched valvetrain upgrade.

Built to the same exacting standards as the rest of Brian Crower's spring lineup, this BC1050 set is the correct choice for K20A3/K24A1 engine builds needing reliable, consistent valve control at higher RPM without the added cost of a dual spring setup. Essential for anyone running upgraded cams or pushing this engine platform toward higher redlines.