Function and Form CADILLAC CT6 (16+) Type 4 Coilovers Kit

The F2 Function & Form Type 4 Coilovers Kit for the Cadillac CT6 (2016–2020) is a premium, benchmade suspension upgrade engineered specifically for CT6 owners who demand more from their full-size luxury sedan. Built around an inverted monotube shock design and manufactured to order in Japan, this kit replaces the CT6's factory suspension with a performance-tuned system that offers independent ride height adjustment and a broad 24-step damping spectrum — giving you genuine control over how your CT6 rides and handles. Whether you're chasing a refined lowered stance or dialing in a more aggressive driving character, the Type 4 represents Function & Form's flagship coilover offering for this platform.

Key Features & Benefits

• Inverted Monotube Shock Design: The inverted configuration places the larger-diameter housing at the top, increasing damper strength and optimizing performance during aggressive suspension movement — a meaningful advantage over conventional non-inverted designs on a heavier luxury platform like the CT6.
• 40mm Inverted Piston: The larger piston diameter improves damper rigidity and response consistency, helping maintain composure under hard cornering or spirited driving without sacrificing day-to-day livability.
• Long-Stroke Design for Added Travel: Engineered with a long stroke to preserve suspension travel, so your CT6 doesn't sacrifice ride quality or bottom out prematurely when lowered.
• 24-Step Damping Spectrum (One-Way Adjustable): Dial in exactly the ride character you want — from a more compliant daily-driver setting to a firmer, more connected feel — with 24 distinct damping clicks accessible without removing the coilovers.
• Independent Ride Height Adjustment: Ride height adjusts independently from spring preload, so you can set your desired drop without inadvertently stiffening the spring rate — a key advantage for achieving a proper stance without compromising suspension geometry.
• Large Fluid Valve Assembly & Oil Chambers: The aggressively tuned internal valving and ample oil capacity are designed to resist fade during sustained hard use, maintaining consistent damping response over time.
• Benchmade to Order in Japan: Each kit is hand-assembled to order, reflecting Function & Form's commitment to quality control at the individual unit level rather than mass-produced off a shelf.
• 2-Year Limited Warranty: Backed by Function & Form's 2-year limited warranty for peace of mind on a significant suspension investment.

Specifications

• Shock Design: Inverted Monotube
• Piston Size: 40mm
• Damping Adjustment: 24-Step Spectrum (One-Way)
• Ride Height Adjustment: Independent from spring preload
• Spring Rates: 12k (672 lbs/in) Front / 8k (448 lbs/in) Rear
• Warranty: 2-Year Limited
• Production: Benchmade to order in Japan
• Lead Time: 16–24 weeks (special order); manufacturer states a minimum of 45 days for production
• SKU: 47500216
• Price: $2,180.00

Fitment

This kit is confirmed to fit the following 2016–2020 Cadillac CT6 trims (both AWD and RWD configurations):

• 2016–2019 Cadillac CT6 — Base
• 2016–2020 Cadillac CT6 — Luxury
• 2016–2020 Cadillac CT6 — Platinum
• 2017–2019 Cadillac CT6 — Plug-In
• 2017 Cadillac CT6 — Premium
• 2016–2020 Cadillac CT6 — Premium Luxury
• 2019 Cadillac CT6 — Sport
• 2019–2020 Cadillac CT6 — V

Important Note: The CT6's factory electronic damping control (Magnetic Ride Control or similar active damping system) must be deactivated prior to or as part of this installation. This is a manufacturer requirement — please consult a qualified installer familiar with CT6 suspension systems if you are unsure how to disable the OEM electronic damping before fitting these coilovers. Use the fitment checker on this page or contact our team to confirm compatibility with your specific build before ordering.

What's in the Box

This is a complete coilover kit designed as a full suspension replacement. As a benchmade special-order product, the kit is assembled specifically for your CT6 application (AWD or RWD). Contact our fitment team at ThreePiece.us to confirm exact kit contents for your drivetrain variant prior to ordering.

Why Buy from ThreePiece.us

• Free Shipping: Every order ships free — no minimums, no surprises at checkout.
• Affirm Financing: Break your purchase into manageable monthly payments with Affirm financing, available at checkout.
• Expert Fitment Support: Our team has served 10,000+ customers and has 10+ years of experience helping enthusiasts get the right parts for their exact build. Call us at 813-535-5801 or email [email protected] with your year, trim, and drivetrain before ordering — especially important for a special-order item like this.
• Special Order Transparency: We're upfront about lead times. This kit is made to order with a 16–24 week production window. We'll keep you informed throughout the process.

Frequently Asked Questions

Q: Does this kit fit both AWD and RWD versions of the Cadillac CT6?
A: Yes. The fitment data confirms compatibility with both AWD and RWD CT6 models from 2016–2020 across multiple trims, including Base, Luxury, Platinum, Premium Luxury, Plug-In, Sport, and V. Function & Form also offers a separate AWD-specific SKU (47500216A) — contact our team to confirm which variant is correct for your drivetrain.

Q: Do I need to disable my CT6's electronic damping system before installing these coilovers?
A: Yes — this is a manufacturer requirement. The CT6's electronic damping control must be deactivated as part of the installation process. If your CT6 is equipped with an active magnetic ride or electronic damping system, work with a qualified installer who is experienced with Cadillac CT6 suspension to ensure proper deactivation before fitting the Type 4 kit.

Q: How long will it take to receive this kit after ordering?
A: This is a special-order, benchmade product manufactured in Japan. The lead time is 16–24 weeks from the date of order. Please plan accordingly — this is not a stocked, ships-immediately item. If you have a time-sensitive project, reach out to our team before placing your order so we can set accurate expectations.

Q: What spring rates does the Type 4 use on the CT6?
A: The Type 4 kit for the Cadillac CT6 uses 12k (672 lbs/in) front springs and 8k (448 lbs/in) rear springs. These are firm, performance-oriented rates suited to a lowered or track-focused setup on the CT6 platform. If you primarily drive on imperfect road surfaces and prioritize daily comfort, discuss your use case with our team to make sure the Type 4 is the right tier for your goals.