Tomei Valve Seat Rings for 4G63 Evo/ DSM (TA310A-MT01A) Toyo Made in the USA with

Made in the USA with high-quality struts

Upgrade the mirrors on your 2022+ Subaru WRX with the Rexpeed polarized mirrors with heated anti-fog and optional LED direction indicator

0L Twin Turbo

Our AMS Snailworks® Engineering Team has also been able to incorporate an in-line 6 micron glass fuel filter to polish the fuel before it enters the engine

Tomei Valve Seat Rings for 4G63 Evo/ DSM (TA310A-MT01A) Toyo Made in the USA withTomei valve seat rings for the Evo and DSM are designed to effectively dissipate heat in the 4G63 engine, preventing cracking. Achieving high engine output under high rotation and load is difficult if cylinder cooling is inadequate, as this leads to high cylinder head temperatures and a low knock limit. Racing engines utilize high conductivity metals, such as copper, for valve seats to manage heat. Beryllium copper alloy (BeCu) is ideal due to its