Brian Crower L15B Single Spring "TITANIUM" Retainer/Keeper Kit | 16-22+ Civic 1.5T & Si, 23+ Integra A-Spec

Fits:

• 2016 - 2021 Honda Civic 1.5T (Coupe FC3, Hatch FK7, Sedan FC1)
• 2017 - 2020 Honda Civic Si (Coupe FC3, Sedan FC1)
• 2022+ Honda Civic 1.5T (Hatch FL1, Sedan FE1)
• 2022+ Honda Civic Si (Sedan FE1)
• 2023+ Acura Integra Base/A-Spec (Hatch DE4)

Rated for a net cam lift of 0.490" (12.45mm) — verify your camshaft's lift spec is within this range before ordering.

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Brian Crower's L15B single spring kit uses PAC Racing valve springs wound from high-grade, super-clean chrome silicon alloy, with proprietary processing for consistent spring pressure at high RPM — exactly where factory dual springs start to lose control over valve float.

The titanium retainer cuts reciprocating mass in the valvetrain compared to a stock steel retainer, reducing the load the valve springs have to control as engine speed climbs. Paired with matched keepers, this kit gives high-RPM builds a valvetrain that stays predictable further into the rev range than stock components allow.

Features

• PAC Racing single valve springs, BC1070 (intake) / BC1089 (exhaust)
• Free length: 2.231"
• Seat pressure: 58 lbs @ 1.975"
• Open pressure: 154 lbs @ 1.500"
• Coil bind: 1.320"
• Titanium retainer (BC2070) and matched keepers (BC2940)
• Rated net cam lift: 0.490" (12.45mm)