Godspeed MAXX Adjustable Coilovers Kit for 2021-2026 Toyota Sienna XL40 – MMX2164-A

The Godspeed MAXX Coilovers Toyota Sienna 2021-2026 kit is an adjustable performance suspension system engineered for the fourth-generation Toyota Sienna XL40. Godspeed Project officially lists its current MAXX kit under manufacturer SKU MMX2164-A, with compatibility covering 2021, 2022, 2023, 2024, 2025 and 2026 Toyota Sienna models. The manufacturer lists the kit for all trims while specifically excluding vehicles equipped with the Mobility Auto Access Package.

Designed for buyers seeking adjustable ride height and firmer, more tunable suspension behavior, the Godspeed MAXX Coilovers Toyota Sienna 2021-2026 system combines monotube dampers, performance springs, adjustable damping and front pillow-ball top mounts with camber plates. Godspeed positions MAXX as its premium single-adjustable coilover range intended to provide a streetable performance setup with tuning capability for more demanding driving environments.

The kit is suitable for performance workshops, suspension specialists, vehicle customizers, automotive-parts distributors, Toyota specialists, importers, wholesalers and professional buyers sourcing suspension upgrades for the XL40 Sienna platform.

Current Manufacturer Part Number – MMX2164-A

The current Godspeed Project reference is:

• Brand: Godspeed Project
• Product Line: MAXX
• Manufacturer SKU: MMX2164-A
• Vehicle: Toyota Sienna
• Chassis: XL40
• Model Years: 2021–2026
• Damping Adjustment: 40 levels
• Ride-Height Adjustment: Yes
• Front Top Mount: Pillow ball with camber plate
• Rear Top Mount: Standard type
• Front Spring Rate: 8 kg/mm / 448 lb/in
• Rear Spring Rate: 9 kg/mm / 504 lb/in
• Front Spring Length: 230 mm
• Rear Spring Length: 220 mm
• Front Spring ID: 62 mm
• Rear Spring ID: 62 mm
• Damper Design: Monotube
• Mobility Auto Access Package: Excluded

These specifications come directly from Godspeed Project’s current product listing for MMX2164-A.

Verified 2021-2026 Sienna Fitment

Godspeed officially lists the Godspeed MAXX Coilovers Toyota Sienna 2021-2026 for:

• 2021 Toyota Sienna
• 2022 Toyota Sienna
• 2023 Toyota Sienna
• 2024 Toyota Sienna
• 2025 Toyota Sienna
• 2026 Toyota Sienna

The manufacturer describes compatibility as all trims, excluding the Mobility Auto Access Package. This is especially important because some older Godspeed product pages and marketplace listings stop at 2025, while the manufacturer’s current MMX2164-A listing explicitly includes 2026.

For B2B orders, providing the VIN, model year and suspension configuration remains recommended before shipment.

XL40 Generation

The kit is specifically designed around the XL40-generation Toyota Sienna introduced for the 2021 model year.

It should not be confused with the Godspeed MAXX kit for the earlier 2011–2020 Sienna XL30, which is a separate suspension product with a different manufacturer reference. Godspeed currently identifies the older XL30 application separately from MMX2164-A.

Therefore, the Godspeed MAXX Coilovers Toyota Sienna 2021-2026 should not be marketed as compatible with 2020-and-earlier Sienna vans.

40-Level Damping Adjustment

A major feature of the MAXX system is 40-level damper adjustment.

Godspeed states that the damping level can be tuned according to driver preference, allowing the suspension to be adjusted between softer street-oriented settings and firmer performance-focused settings.

This gives professional installers and owners more control over:

• Ride firmness
• Body movement
• Suspension response
• Road feedback
• Performance-oriented handling characteristics

Damping should be adjusted systematically, and excessively aggressive settings may reduce ride comfort.

Adjustable Ride Height

The Godspeed MAXX Coilovers Toyota Sienna 2021-2026 includes ride-height adjustment.

Godspeed’s official specifications mark:

Height Adjustment: Yes.

This allows the vehicle’s ride height to be altered from its factory suspension configuration within the mechanical adjustment range of the system.

Godspeed does not publish a specific minimum or maximum drop measurement on the current MMX2164-A product page, so an exact lowering range should not be promised without manufacturer confirmation or actual setup measurements.

Final ride height must also provide adequate:

• Tire clearance
• Wheel clearance
• Suspension travel
• Ground clearance
• Alignment range

Monotube Damper Construction

Godspeed describes MAXX as using a monotube damper manufactured from a carbon seamless steel 52 mm shock body with a 44 mm internal piston. The company states that this design is intended to improve damper response and maintain performance under demanding use.

The Godspeed MAXX Coilovers Toyota Sienna 2021-2026 therefore differs from basic replacement struts designed only to restore standard factory ride height.

This is a performance suspension modification rather than an OEM-equivalent comfort replacement.

Front Pillow-Ball Mounts and Camber Plates

The front suspension specification is:

Pillow Ball Top Mount with Camber Plate

Godspeed includes this configuration in the official MMX2164-A specifications.

The camber plate provides additional front alignment adjustment compared with a conventional fixed upper mount.

This can be particularly useful after lowering, where wheel-alignment geometry changes.

However, alignment settings should be determined by a qualified technician rather than maximizing camber adjustment solely for appearance.

Rear Top Mount

The rear specification differs from the front.

Godspeed identifies the rear top mount as:

Standard Type

rather than a pillow-ball camber plate.

Customers should therefore not assume that all four corners use identical top-mount construction.

Front Spring Specification

Godspeed specifies the front springs at:

8 kg/mm

or approximately:

448 lb/in

with:

230 mm spring length
62 mm inner diameter

for the MMX2164-A kit.

The spring rate is selected as part of Godspeed’s matched suspension package and should be considered together with the damper settings rather than evaluated independently.

Rear Spring Specification

The rear springs are rated at:

9 kg/mm

or approximately:

504 lb/in

with:

220 mm spring length
62 mm inner diameter.

The higher numerical rear spring rate does not by itself mean that the rear suspension will necessarily feel harsher than the front because suspension geometry, vehicle weight distribution, motion ratio and damping all affect ride behavior.

SAE9252 Performance Springs

Godspeed states that MAXX coilovers use cold-bent springs manufactured from high-strength SAE9252 steel.

The manufacturer describes this material as part of its effort to balance suspension performance with street usability.  MAXX Coilovers Toyota Sienna 2021-2026

Do not substitute unverified aftermarket springs into the Godspeed MAXX Coilovers Toyota Sienna 2021-2026 kit unless spring dimensions, rates and suspension compatibility have been properly evaluated.

Mobility Auto Access Package Exclusion

This is one of the most important fitment restrictions.

Godspeed explicitly states:  MAXX Coilovers Toyota Sienna 2021-2026

Excludes Mobility Auto Access Package.

A Sienna equipped with Toyota mobility/accessibility hardware should therefore not automatically be considered compatible with MMX2164-A.  MAXX Coilovers Toyota Sienna 2021-2026

For accessible or mobility-converted vehicles, the customer should provide VIN and details of any suspension/body modifications before ordering.  MAXX Coilovers Toyota Sienna 2021-2026

Current MAXX vs Older MAXX-Sports Kit

There is also an older Godspeed listing for a Sienna MAXX-Sports Inverted Coilover under SKU MMXI7079-A. That product lists 7 kg/mm front and rear springs and different top-mount specifications.

The current Godspeed MAXX Coilovers Toyota Sienna 2021-2026 product is MMX2164-A, with:

• 8 kg/mm front springs
• 9 kg/mm rear springs
• 40-level damping
• Front pillow-ball camber plates
• 2026 explicitly included  MAXX Coilovers Toyota Sienna 2021-2026

These two product references should not be mixed together in one technical specification.

Installation and Wheel Alignment

Professional installation is strongly recommended.

After installing adjustable coilovers, technicians should verify:

• Ride height
• Spring preload
• Damper adjustment
• Brake-line routing
• Fastener torque
• Tire clearance
• Wheel clearance
• Suspension travel
• Alignment  MAXX Coilovers Toyota Sienna 2021-2026

A complete four-wheel alignment should be performed after ride height has been finalized.

Suspension should also be inspected again after an initial settling period according to professional workshop practice and manufacturer instructions.

Ride Quality and Intended Use

The Godspeed MAXX Coilovers Toyota Sienna 2021-2026 should not be marketed as producing the same ride characteristics as standard Toyota suspension.  MAXX Coilovers Toyota Sienna 2021-2026

Godspeed describes the MAXX platform as a streetable race-built coilover with adjustable damping.

Depending on ride height and damping settings, users can expect suspension behavior to differ from stock, potentially including:  MAXX Coilovers Toyota Sienna 2021-2026

• Firmer ride
• Reduced body movement
• More immediate suspension response
• Reduced suspension travel when significantly lowered
• Increased road feedback

Ride comfort is subjective and should not be guaranteed.  MAXX Coilovers Toyota Sienna 2021-2026

Warranty

Godspeed’s current product information states that its parts are covered for one year from the purchase date, with proof of purchase from an authorized dealer and supporting documentation required for warranty claims.  MAXX Coilovers Toyota Sienna 2021-2026

Warranty applicability should be confirmed for the actual sales channel and destination before promising coverage to a buyer.  MAXX Coilovers Toyota Sienna 2021-2026

Information Required Before Ordering

Provide:

• Toyota Sienna model year
• VIN
• XL40 confirmation
• Trim
• Mobility Auto Access Package: yes/no
• Existing suspension modifications
• Intended wheel/tire setup
• Required quantity
• Delivery destination  MAXX Coilovers Toyota Sienna 2021-2026

Request a Quote

For pricing and availability of the Godspeed MAXX Coilovers Toyota Sienna 2021-2026, provide the Sienna year, VIN, trim, suspension configuration, quantity and shipping destination.

The current manufacturer reference is MMX2164-A, featuring 40-level adjustable damping, adjustable ride height, 8 kg/mm front springs, 9 kg/mm rear springs and front pillow-ball camber plates. Godspeed officially lists the kit for 2021–2026 XL40 Sienna all trims except Mobility Auto Access Package vehicles.

Exact availability, packaging contents, installation accessories, freight terms and warranty eligibility must be confirmed for the actual supplied kit.  MAXX Coilovers Toyota Sienna 2021-2026