Brian Crower BC1220-1 Single Valve Spring for Nissan VQ35DE / Toyota 3URFE & 2GRFE

The Brian Crower BC1220-1 is a high-performance single valve spring engineered for sustained high-RPM operation. Sold individually, this spring is purpose-built for serious engine builds where OEM valve springs are no longer sufficient to maintain proper valvetrain control.

Key Features:

• Manufactured in partnership with PAC Racing Springs using the highest grade, super-clean chrome-silicon alloy wire for superior fatigue resistance
• Proprietary winding and processing procedures ensure consistent seat and open pressures across all springs
• Single-spring configuration delivers increased seat and open pressure without the added friction of a dual-spring setup
• Eliminates valve float at high RPM by ensuring precise valve-to-cam lobe tracking on the closing ramp
• Designed to work with performance camshaft profiles featuring aggressive lift and fast ramp rates
• Compatible with OEM spring seats; no machine work required

Specifications:

• Type: Single
• Free Length: 1.731"
• O.D. / I.D. (Outer): 0.991" / 0.707"
• Seat Pressure: 80 lbs @ 1.425"
• Open Pressure: 192 lbs @ 0.990"
• Coil Bind: 0.900"
• Net Cam Lift: 0.450" / 11.43mm
• Compatible Retainer (VQ): BC2200
• Compatible Retainer (3UR/2GR): BC2370 OEM
• Spring Seat: OEM

This listing is for one (1) valve spring. Order the quantity needed to complete your build.