Supertech now offers a performance single valve spring, retainer, and spring seat kit for the Honda Civic Type-R (FK8) K20C1 engine application.

Supertech Single Valve Springs:
Supertech performance valve springs are made with premium Superclean Chrome Silicon Vanadium Steel Alloy for higher performance and durability. Computer designed to ensure that wire stress levels do not overpass the limits for long durability under extreme conditions and harmonics are well under control.

Supertech Titanium Retainers
Supertech titanium retainers prevent valve float and strength up your valvetrain. Retainers are CNC machined from 6AL4V grade titanium.

Supertech Spring Seat Locater
Supertech spring seats are made from high grade steel and aide in the upgrading to dual valve springs. Thickness of spring seats may vary.

Valve spring & retainer kit specs:

K20C1 - 16pc single valve springs / 16pc titanium retainers / 16pc steel spring seats

• Open Pressure: 176 @ 10
• Max Lift: 13.80mm
• Coil Bind: 27.30mm
• Rate: 9,9
• Kit spring: SPR-H1003S
• Kit spring qty: 16
• Retainer: RET-1003-C
• Retainer qty: 16
• Seat Locator: SEAT-1003-CI + SEAT-1003-CE
• Seat Locator qty: 16
• Seat Pressure: 77 @ 40.60
• InnSpr.ID: Single
• OutSpr.ID: 16.30mm
• OutSpr.OD: 23.70mm
• InnSpr.OD: Single