Drivetrain› Automatic Transmissions and Components

Circle D Specialties

GM Pro Series 10L90 Torque Converter

$2,995.00

SKU: 27-18-04

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Circle D Specialties GM Pro Series 10L90 torque converter is designed for high-horsepower 2017 Camaro ZL1 and 2020+ 6th-Gen GM vehicles.

This converter offers multiple options for engine, power-adder, and vehicle setups. It includes furnace brazed and hand TIG welded fins, clutch pack isolators for smoother operation, a CDS exclusive deep groover ball bearing, and a CFD modeled, 5-axis billet steel stator with a patent-pending flow control piston. The modular clutch pack assembly boasts a 2000+ TQ holding capacity.
Show original supplier description
The Circle D Specialties GM Pro Series 10L90 torque converter is an excellent choice for high-horsepower 2017 Camaro ZL1 and 2020+ 6th-Gen GM platforms. Multiple options are available to accommodate a wide variety of engine, power-adder, and vehicle setups. Key construction features include furnace brazed and hand TIG welded fins for maximum durability, clutch pack isolators for smoother operation, and the CDS exclusive deep groover ball bearing. The stator is CFD modeled and constructed from 5-axis billet steel, incorporating a patent-pending flow control piston design. The modular clutch pack assembly provides a robust 2000+ TQ holding capacity. This converter is available in 245mm or 258mm diameters and offers stall speed options ranging from 2800-3000 through 4800-5000 RPM in 200 RPM increments. It supports naturally aspirated and various forced induction applications, including positive displacement superchargers, centrifugal superchargers, and turbo/twin turbo setups. For optimal performance, valve-body modifications are recommended, specifically the Ratio-Tek RT-10L80-PRX.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandCircle D Specialties
Part Number27-18-04
CategoryDrivetrain

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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