Drivetrain Automatic Transmissions and Components

Sun Coast Converters

Suncoast Converters Super Mega XL 258mm Xtra-Lite Billet Series Aluminum Converter - Bolt-Together COA-20380-2X

$12,344.56

SKU: S02K COA-20380-2X

In Stock
In Stock
Ships by Jun 20
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Non-Returnable Item
INSTALL DIFFICULTY
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Description

The Coan Racing COA-20380-2X “Super Mega XL” 258 mm Xtra‑Lite Billet Series Aluminum Converter is a premium, race-focused torque converter engineered for TH400 transmissions. Crafted from lightweight CNC-machined billet aluminum, the bolt-together housing and six-bolt billet cover provide exceptional rigidity while allowing quick access for maintenance or tuning. This 258 mm unit combines compact size with strength, delivering reduced rotating mass for faster throttle response without compromising durability. The Super Mega XL is offered in a spragless configuration to minimize internal drag, though it can be upgraded with an optional XST sprag assembly to further enhance torque-holding capability. Ideal for extreme-racing applications like Pro‑Mod, turbocharged builds, and heavy-duty drag setups, this converter balances efficiency and rugged performance in a lightweight, serviceable design.

Fitment

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Specifications

BrandSun Coast Converters
Part NumberS02K COA-20380-2X

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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