Ferrea High Boost Dual Valve Spring Kit for Toyota Supra 2JZ 2JZGE 2JZGTE - KT4047 ferrea 2jz dual channel knock control

dual channel knock control

you want to hear those awesome noises your car makes

2 x Dedicated Engine Position inputs with extensive trigger type support

(2) Worm Gear Clamps

Part # GSC 7045S4

Ferrea High Boost Dual Valve Spring Kit for Toyota Supra 2JZ 2JZGE 2JZGTE - KT4047 ferrea 2jz dual channel knock controlFerrea High Boost Dual Valve Spring Kit for Toyota Supra 2JZ 2JZGE 2JZGTE Part # KT4047 The Ferrea Dual Valve Spring Kit is what we use in all of our in house builds. Ferrea makes the best valvetrain parts in the industry, hands down. Kit includes the following: Dual Springs #S10179 (24) Titanium Retainers #E11145 (24) Seat Locators #SL1174 (12) Valve Locks #K10037 (24)