SpeedFactory Racing Honda D16Z6 D16Y D17 D15B SOHC VTEC Valve Springs & Titanium Retainers

After a year of dyno and street testing in combination with the Street Savage Camshaft, SpeedFactory is proud to release the Upgraded Valvetrain for the D16 SOHC VTEC engines!

** Options for only retainers and/or springs are also offered **

SpeedFactory Racing D16Z/Y SOHC VTEC Valve Springs

SpeedFactory Racing high-quality valve springs are highly recommended for aftermarket performance camshafts and are designed to ensure a stable valvetrain and prevent valve float at high rpm & boost levels.

CAD designed & CNC wound from super clean chrome silicon vanadium nickel alloy, double shot peened and isotropic finished & oiled for a superior and durable spring under extreme conditions & millions of cycles tested.

Note: These Springs are compatible with OEM steel Retainers or SpeedFactory Racing Titanium Retainers (#SF-02-422). Use OEM spring seat locators.

Features:
-Super Clean Chrome Silicon Vanadium Nickel Alloy
-Double Shot Peened
-Isotropic Finished & Oiled
-16pc set

Specifications:
Seat Pressure: 60lbs @ 1.948”
Open Pressure: 166lbs @ 1.456”
Coil Bind: 1.362”
Max Net Lift: 0.547”

SpeedFactory Racing D16Z/Y SOHC VTEC Titanium Retainers

SpeedFactory Racing Titanium Retainers are precision CNC machined from 6Al-4V titanium for strength, durability, and low weight. Coming in at 24% lighter than the OEM steel retainers, the result is improved high rpm valvetrain control and power.

Features:
-16pc set

Specifications:
Material: Ti 6Al-4V
Weight: 4.6 grams each

Fitments:
SOHC VTEC D16Z, D16Y, D17, JDM D15B

Part Numbers for Spring and Retainer Kit: SF-02-421 + SF-02-422